The document discusses the corrosion and rusting of metals like iron. It explains that rusting is an electrochemical process where iron loses electrons and oxygen gains electrons, forming hydroxide ions. The rate of corrosion is affected by water and electrolytes. Different metals coupled to an iron nail will affect its rusting - a more electropositive metal like zinc will prevent rusting, while a less electropositive metal like magnesium will facilitate rusting. The document also outlines the reactions involved in rust formation and discusses how rust changes over time based on conditions.
Project is from the chapter Electrochemistry . Project is based on the rusting of iron when coupled with different metals . One of the easiest projects in chemistry.
Please do like , share and comment if my work helped you ;)
STUDY OF THE EFFECT OF METAL COUPLING ON THE RUSTING OF IRONKrishna Yadav
In this project the aim is to investigate effect of the metals coupling on the rusting of iron. Metal coupling affects the rusting of iron. If the nail is coupled with a more electro-positive metal like zinc, magnesium or aluminium rusting is prevented but if on the other hand, it is coupled with less electro –positive metals like copper, the rusting is facilitated.
Project is from the chapter Electrochemistry . Project is based on the rusting of iron when coupled with different metals . One of the easiest projects in chemistry.
Please do like , share and comment if my work helped you ;)
STUDY OF THE EFFECT OF METAL COUPLING ON THE RUSTING OF IRONKrishna Yadav
In this project the aim is to investigate effect of the metals coupling on the rusting of iron. Metal coupling affects the rusting of iron. If the nail is coupled with a more electro-positive metal like zinc, magnesium or aluminium rusting is prevented but if on the other hand, it is coupled with less electro –positive metals like copper, the rusting is facilitated.
Analysis of electroplating plant on different materialsasfandali01
Imperial College of Business Studies for the partial fulfillment of the requirement for awarding the degree of B.Sc. Mechanical Engineering Technology.
Automotive coatings and the processes used to coaat
automobile surfaces exemplify the avant-grade of technologies
that are capable of producing durable surfaces, exceeding
customers expections of apperance, maximizing efficiency, and
meeting environmental regulations. These accomplishments are
rooted in 100 years of experience, trial-and-error approaches,
technique and technology advancements, and theroetical
assessments. Because of advancenments directed at
understanding the how, why, when, and where of automobile
coatings, the progress in controlling droplets and their
deposition attributes, and the development of new technologies
and paint chemistries, a comprehensive and up-to-date review
of automobile coating and coating technologies was considered
to be a value to industrial practitioners and researches.
Overall the critical performance factors driving the
development and use of advanced automotive coatings and
coating technologies are (a) aesthetic characteristics; (b)
corrosion protection; (c) mass production; (d) cost and
environmental requirements; (e) appearance and durability.
Although the relative importance of each of these factors is
debatable, the perfection of any one at the expense of another
would be unacceptable. Hence, new developments in automotive
coatings are described and discussed in the following review,
and then related to improvements in production technologies&
paints. Modern automotive coating procedure are also discussed in details.
Its Is The Process By Which A Iron Nail Is Been Coated With Copper Plate.Electroplating is a process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. The term is also used for electrical oxidation of anions onto a solid substrate, as in the formation silver chloride on silver wire to make silver/silver-chloride electrodes. Electroplating is primarily used to change the surface properties of an object (e.g. abrasion and wear resistance, corrosion protection, lubricity, aesthetic qualities, etc.), but may also be used to build up thickness on undersized parts or to form objects by electroforming.
The process used in electroplating is called electrodeposition. It is analogous to a galvanic cell acting in reverse. The part to be plated is the cathode of the circuit. In one technique, the anode is made of the metal to be plated on the part. Both components are immersed in a solution called an electrolyte containing one or more dissolved metal salts as well as other ions that permit the flow of electricity. A power supply supplies a direct current to the anode, oxidizing the metal atoms that comprise it and allowing them to dissolve in the solution. At the cathode, the dissolved metal ions in the electrolyte solution are reduced at the interface between the solution and the cathode, such that they "plate out" onto the cathode. The rate at which the anode is dissolved is equal to the rate at which the cathode is plated, vis-a-vis the current flowing through the circuit. In this manner, the ions in the electrolyte bath are continuously replenished by the anode.[1]
Other electroplating processes may use a non-consumable anode such as lead or carbon. In these techniques, ions of the metal to be plated must be periodically replenished in the bath as they are drawn out of the solution.[2] The most common form of electroplating is used for creating coins such as pennies, which are small zinc plates covered in a layer of copper. [3]Process[edit]
Electroplating of a metal (Me) with copper in a copper sulfate bath
The cations associate with the anions in the solution. These cations are reduced at the cathode to deposit in the metallic, zero valence state. For example, in an acid solution, copper is oxidized at the anode to Cu2+ by losing two electrons. The Cu2+ associates with the anion SO42- in the solution to form copper sulfate. At the cathode, the Cu2+ is reduced to metallic copper by gaining two electrons. The result is the effective transfer of copper from the anode source to a plate covering the cathode.
The plating is most commonly a single metallic element, not an alloy. However, some alloys can be electrodeposited, notably brass and solder.
The physical principle of the electric arc furnace will be briefly explained. It will be made clear how latest context and technology bound developments triggered the breakthrough of the electric arc furnace as a future oriented technology. The increasing relevance of the electric arc furnace will be illustrated by some examples coming from a broad range of industrial sectors. Some indications will be given on the impact of the electric arc furnace on the electrical system.
Based on overall economic figures, indications will be given of the chance for further penetration of the electric arc furnace in industrial thermal processes.
Presentation on electric induction furnace by Stead fast engineers Pvt Ltdsteadfast123
Presentation on electric induction furnace by Stead fast engineers Pvt Ltd,
Find here Induction Furnace manufacturers,
Induction heater manufacturers,
Induction Billet heater Manufacturers,
Induction Melting furnace manufacturers,
Induction Furnace Manufacturers in India,
Induction Billet heater manufacturers in India,
Induction heating system,
Induction Melting Furnace for your source needs.
Analysis of electroplating plant on different materialsasfandali01
Imperial College of Business Studies for the partial fulfillment of the requirement for awarding the degree of B.Sc. Mechanical Engineering Technology.
Automotive coatings and the processes used to coaat
automobile surfaces exemplify the avant-grade of technologies
that are capable of producing durable surfaces, exceeding
customers expections of apperance, maximizing efficiency, and
meeting environmental regulations. These accomplishments are
rooted in 100 years of experience, trial-and-error approaches,
technique and technology advancements, and theroetical
assessments. Because of advancenments directed at
understanding the how, why, when, and where of automobile
coatings, the progress in controlling droplets and their
deposition attributes, and the development of new technologies
and paint chemistries, a comprehensive and up-to-date review
of automobile coating and coating technologies was considered
to be a value to industrial practitioners and researches.
Overall the critical performance factors driving the
development and use of advanced automotive coatings and
coating technologies are (a) aesthetic characteristics; (b)
corrosion protection; (c) mass production; (d) cost and
environmental requirements; (e) appearance and durability.
Although the relative importance of each of these factors is
debatable, the perfection of any one at the expense of another
would be unacceptable. Hence, new developments in automotive
coatings are described and discussed in the following review,
and then related to improvements in production technologies&
paints. Modern automotive coating procedure are also discussed in details.
Its Is The Process By Which A Iron Nail Is Been Coated With Copper Plate.Electroplating is a process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode. The term is also used for electrical oxidation of anions onto a solid substrate, as in the formation silver chloride on silver wire to make silver/silver-chloride electrodes. Electroplating is primarily used to change the surface properties of an object (e.g. abrasion and wear resistance, corrosion protection, lubricity, aesthetic qualities, etc.), but may also be used to build up thickness on undersized parts or to form objects by electroforming.
The process used in electroplating is called electrodeposition. It is analogous to a galvanic cell acting in reverse. The part to be plated is the cathode of the circuit. In one technique, the anode is made of the metal to be plated on the part. Both components are immersed in a solution called an electrolyte containing one or more dissolved metal salts as well as other ions that permit the flow of electricity. A power supply supplies a direct current to the anode, oxidizing the metal atoms that comprise it and allowing them to dissolve in the solution. At the cathode, the dissolved metal ions in the electrolyte solution are reduced at the interface between the solution and the cathode, such that they "plate out" onto the cathode. The rate at which the anode is dissolved is equal to the rate at which the cathode is plated, vis-a-vis the current flowing through the circuit. In this manner, the ions in the electrolyte bath are continuously replenished by the anode.[1]
Other electroplating processes may use a non-consumable anode such as lead or carbon. In these techniques, ions of the metal to be plated must be periodically replenished in the bath as they are drawn out of the solution.[2] The most common form of electroplating is used for creating coins such as pennies, which are small zinc plates covered in a layer of copper. [3]Process[edit]
Electroplating of a metal (Me) with copper in a copper sulfate bath
The cations associate with the anions in the solution. These cations are reduced at the cathode to deposit in the metallic, zero valence state. For example, in an acid solution, copper is oxidized at the anode to Cu2+ by losing two electrons. The Cu2+ associates with the anion SO42- in the solution to form copper sulfate. At the cathode, the Cu2+ is reduced to metallic copper by gaining two electrons. The result is the effective transfer of copper from the anode source to a plate covering the cathode.
The plating is most commonly a single metallic element, not an alloy. However, some alloys can be electrodeposited, notably brass and solder.
The physical principle of the electric arc furnace will be briefly explained. It will be made clear how latest context and technology bound developments triggered the breakthrough of the electric arc furnace as a future oriented technology. The increasing relevance of the electric arc furnace will be illustrated by some examples coming from a broad range of industrial sectors. Some indications will be given on the impact of the electric arc furnace on the electrical system.
Based on overall economic figures, indications will be given of the chance for further penetration of the electric arc furnace in industrial thermal processes.
Presentation on electric induction furnace by Stead fast engineers Pvt Ltdsteadfast123
Presentation on electric induction furnace by Stead fast engineers Pvt Ltd,
Find here Induction Furnace manufacturers,
Induction heater manufacturers,
Induction Billet heater Manufacturers,
Induction Melting furnace manufacturers,
Induction Furnace Manufacturers in India,
Induction Billet heater manufacturers in India,
Induction heating system,
Induction Melting Furnace for your source needs.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Video lecture is available on YouTube on the link:https://youtu.be/xrBnxxN-RUw
For UG students of All Engineering Branches, Chemistry, Food Science, Polymer Science, Chemical Engg. etc.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Chapter 3 - Islamic Banking Products and Services.pptx
Investigatory project Chemistry.docx
1.
2. AKNOWLEDGEMENT
I undertook this Project work , as the part of my XII-Chemistry project .I had tried
to apply my best of knowledge and experience gained during study and class work
experience.
I would like to extend my sincere thanks and gratitude to my teacher Mr.Sakthivel
Murugan
I would like to take the opportunity to extend my sincere thanks and gratitude to our
parents for being a source of inspiration and providing time and freedom to develop
this project.
5. INTRODUCTION
Metal corrosion is the most common form of corrosion. The
corrosion occurs at the surface of the metal in forms of
chemical or electrochemical reactions. This process significantly
reduces the strength, plasticity, toughness and other
mechanical properties of the metallic material. However,
because of the metal and its alloys is still the most important
pipe and structure materials, the cost of corrosion grows
significantly with the growth of industries. Thus many scientists
focus on the research of corrosion control in order to reduce the
cost of replacing the rusting metal material.
6.
7. MECHANISM OF CORROSION OF METAL
General Principle of Corrosion: Reaction is the fundamental
reaction during the corrosion process, which the electron can
flow from certain areas on the metal surface to other areas
through a solution which can conduct electric currents. Basically,
both anodic and cathode reactions have to balance each other
out, resulting in a neutral reaction. Both anodic and cathodic
reactions occur simultaneously at the same rates. What’s more,
the site of these electrodes may consist of either two different
kinds of metals, or they may be on different areas of the same
piece of metal, resulting a potential difference between the two
electrodes, so that the oxidation reaction of the metal at the
anode and formation of negative ions at the cathode can take
place at the same time.
8. Similar electrical potentials may also be developed between two
areas of a component made of a single metal as result of small
differences in composition or structure or of differences in the
conditions to which the metal surface is exposed. That part of a
metal which becomes the corroding area is called the “anode” ; that
which acts as the other electrode of the battery is called “cathode”
which does not corrode, but is an important part of the system. In
the corrosion systems commonly involved, with water containing
some salts in solution as the electrolyte. Corrosion may even take
place with pure water, provided that oxygen is present. In such cases
oxygen combines with the hydrogen generated at the cathode,
removing it and permitting the reaction to go on.
RUSTING: AN ELECTROCHEMICAL
9. MECHANISM
Rusting may be explained by an electrochemical mechanism. In
the presence of moist air containing dissolved oxygen or carbon
dioxide, the commercial iron behave as if composed of small
electrical cells. At anode of cell, iron passes into solution as
ferrous ions. The electron moves towards the cathode and form
hydroxyl ions. Under the influence of dissolved oxygen the
ferrous ions and hydroxyl ions into form, i.e., hydrated ferric
oxide.
METHODS OF PREVENTION OF CORROSION
AND RUSTING
Some of the methods used:-
10. ➜Barrier Protection: In this method, a barrier film is introduced
between iron surface and atmospheric air. The film is obtained by
painting, varnishing etc.
➜Galvanization: The metallic iron is covered by a layer of more
reactive metal such as zinc. The active metal losses electrons in
preference of iron. Thus, protecting from rusting and corrosion.
AIM OF THIS PROJECT
In this project the aim is to investigate effect of the metals coupling
on the rusting of iron. Metal coupling affects the rusting of iron. If
the nail is coupled with a more electropositive metal rusting is
prevented but if on the other hand, it is coupled with less electro –
positive metals the rusting is facilitated.
12. At first we have to clean
the surface of iron nails
with the help of sand
paper.
After that we have to
wind zinc strip around
one nail, a clean copper
wire around the second
and clean magnesium
strip around the third
nail.
Then to put all these
three and a fourth nail
in Petri dishes so that
they are not in contact
with each other.
Then to fill the Petri
dishes with hot agar-
agar solution in such a
way that only lower half
of the nails are covered
with the liquids.
Keep the covered Petri
dishes for one day or
so.
The liquids set to a gel
on cooling.
Two types of patches
are observed around
the rusted nail, one is
blue and the other pink.
Blue patch is due to the
formation of potassium
Ferro-ferricyanide
where pink patch is due
to the formation of
hydroxyl ions which
turns colorless
phenolphthalein to pink.
13. ASSOCIATED REACTIONS
The rusting of iron is an electrochemical process that begins with the
transfer of electrons from iron to oxygen. The iron is the reducing
agent(gives up electrons) while the oxygen is the oxidizing agent
(gains electrons). The rate of corrosion is affected by water and
accelerated by electrolytes, as illustrated by the effects of road salt
on the corrosion of automobiles.
The key reaction is the reduction of oxygen
𝑶𝟐 + 𝟒𝒆− + 𝟐𝑯𝟐𝑶⟶𝟒𝑶𝑯−
Because it forms hydroxide ions, this process is strongly affected by
the presence of acid. Indeed, the corrosion of most metals by
oxygen is accelerated at low pH.
Providing the electrons for the above reaction is the
oxidation of iron that may be described as follows:
14. 𝑭𝒆⟶𝑭𝒆𝟐+ + 𝟐𝒆−
The following redox reaction also occurs in the presence of water
and is crucial to the formation of rust: 𝟒𝑭𝒆𝟐+ + 𝑶𝟐⟶𝟒𝑭𝒆𝟑+ +
𝟐𝑶𝟐−
In addition, the following multistep acid-base reactions affect
the course of rust formation:
𝑭𝒆𝟐+ + 𝟐𝑯𝟐𝑶⟶𝑭𝒆(𝑶𝑯)𝟐+ 𝟐𝑯+ 𝑭𝒆𝟑+ +
𝟑𝑯𝟐𝑶⟶𝑭𝒆(𝑶𝑯)𝟑 + 𝟑𝑯+ as do the following
dehydration equilibria:
𝑭𝒆(𝑶𝑯)𝟐 ⟶𝑭𝒆𝑶 + 𝑯𝟐𝑶
𝑭𝒆(𝑶𝑯)𝟑 ⟶𝑭𝒆𝑶(𝑶𝑯) + 𝑯𝟐𝑶
𝟐𝑭𝒆𝑶(𝑶𝑯) ⟶𝑭𝒆𝟐𝑶𝟑 + 𝑯𝟐𝑶
From the above equations, it is also seen that the corrosion products are
dictated by the availability of water and oxygen. With limited dissolved
15. oxygen, iron(II) containing materials are favored, including FeO and black
lodestone or magnetite (𝑭𝒆𝟑𝑶𝟒). High oxygen concentrations favor ferric
materials with the nominal formulae 𝑭𝒆(𝑶𝑯)𝟑−𝒙𝑶𝒙/𝟐.
The nature of rust changes with time, reflecting the slow rates of the
reactions of solids.
Furthermore, these complex processes are affected by the presence of
other ions, such as 𝑪𝒂𝟐+, both of which serve as an electrolyte, and
thus accelerate rust formation, or combine with the hydroxides and
oxides of iron to precipitate a variety of Ca-Fe-O-OH species. Onset of
rusting can also be detected in laboratory with the use of ferroxyl
indicator solution. The solution detects both 𝑭𝒆𝟐+ ions and hydroxyl
ions. Formation of Fe2+ ions and hydroxyl ions are indicated by blue and
pink patches respectively.