Ceramics are inorganic, non-metallic materials made of bonded metallic and non-metallic elements. They are generally hard, brittle, and resistant to heat and corrosion. Major ceramic products include pottery, glass, bricks, tiles, cement, refractories, abrasives, insulators, and bio ceramics like artificial teeth. Ceramics are categorized as traditional, new, or glass. They are processed by shaping and sintering powder compacts to increase density and strength.
introduction of ceramic: A ceramic is an inorganic, nonmetallic solid material comprising metal, nonmetal or metalloid atoms primarily held in ionic and all are made by firing or burning, often including silicates and metal oxides.
classification and types of ceramic, application of ceramic and innovations on it.
Ceramics are important engineering materials from engineering applications point of view.This presentation gives briefly important properties and applications of ceramics
information collected from various sources available on the internet
advanced ceramics are very useful and contains various properties that traditional ceramics do not have.
general classification
classification on the bases of application
classification on the bases of composition
+ electro ceramics
+ advanced structural ceramics
Bioi ceramics
piezoelectric ceramics
dielectric ceramic
Megnetic ceramics
Nuclear Ceramics
Automotive ceramics
optical ceramics
nitrides ceramics
silicate ceramics
carbides ceramics
oxide ceramics
introduction of ceramic: A ceramic is an inorganic, nonmetallic solid material comprising metal, nonmetal or metalloid atoms primarily held in ionic and all are made by firing or burning, often including silicates and metal oxides.
classification and types of ceramic, application of ceramic and innovations on it.
Ceramics are important engineering materials from engineering applications point of view.This presentation gives briefly important properties and applications of ceramics
information collected from various sources available on the internet
advanced ceramics are very useful and contains various properties that traditional ceramics do not have.
general classification
classification on the bases of application
classification on the bases of composition
+ electro ceramics
+ advanced structural ceramics
Bioi ceramics
piezoelectric ceramics
dielectric ceramic
Megnetic ceramics
Nuclear Ceramics
Automotive ceramics
optical ceramics
nitrides ceramics
silicate ceramics
carbides ceramics
oxide ceramics
Properties of ceramics; Classification of ceramics; Ceramic raw material; Fabricating and processing of ceramic;Application of Ceramics; Glasses; Clay Products; Structural clay product; Whitewares; Refractories: Fireclay; Silica; Basic refractories; Special refractories; Abrasives; Cements; Advanced Ceramics
Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non metal. Ceramic materials may be crystalline or partly crystalline.
The word ceramic comes from the Greek word keramiko of pottery" or for pottery from keramos.
The important points of composite materials are mentioned. This file includes, what is composite materials, its classifications, applications, advantages and disadvantages.
This presentation contains the basics of the composites, types of the composites and the processing of the composites or we can say that manufacturing of the composites. This presentation can also help who are working on the de-lamination of the laminates.
Properties of ceramics; Classification of ceramics; Ceramic raw material; Fabricating and processing of ceramic;Application of Ceramics; Glasses; Clay Products; Structural clay product; Whitewares; Refractories: Fireclay; Silica; Basic refractories; Special refractories; Abrasives; Cements; Advanced Ceramics
Ceramic materials are inorganic, non-metallic materials made from compounds of a metal and a non metal. Ceramic materials may be crystalline or partly crystalline.
The word ceramic comes from the Greek word keramiko of pottery" or for pottery from keramos.
The important points of composite materials are mentioned. This file includes, what is composite materials, its classifications, applications, advantages and disadvantages.
This presentation contains the basics of the composites, types of the composites and the processing of the composites or we can say that manufacturing of the composites. This presentation can also help who are working on the de-lamination of the laminates.
I hope You all like it. I hope It is very beneficial for you all. I really thought that you all get enough knowledge from this presentation. This presentation is about materials and their classifications. After you read this presentation you knowledge is not as before.
A review on advanced ceramic processing techniquesAlokjyoti Dash
This Presentation enlists and describes most ceramic process and most parameters which affect these ceramic processing. A reader shall understand the basic of these presented process to fabricate unique ceramic materials
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CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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2. Definition
• Ceramics are inorganic, non metallic materials
which consist of metallic and non metallic
elements bonded together primarily by ionic or
covalent bonds.
3. Ceramic Properties
In general most ceramics are:
• hard,
• wear-resistant,
• brittle,
• refractory,
• thermal insulators,
• electrical insulators,
• nonmagnetic,
• prone to thermal shock, and
• chemically stable.
4. Ceramic Products
• The best-known ceramics are pottery, glass, brick, porcelain, and
cement
• Clay construction products - bricks, clay pipe, and building tile
• Refractory ceramics - ceramics capable of high temperature
applications such as furnace walls.
• Cement used in concrete - used for construction and roads
• Glass - bottles, lenses, window pane, and light bulbs
• Glass fibers - thermal insulating wool, and fiber optics
communications lines
• Abrasives - aluminum oxide and silicon carbide
• Cutting tool materials - tungsten carbide, aluminum oxide, and
cubic boron nitride
5. Ceramic Products
• Ceramic insulators - applications include
electrical transmission components, spark
plugs, and microelectronic chip
• Nuclear fuels based on uranium oxide (UO2)
• Bio ceramics - artificial teeth and bones
6. Three Basic Categories
• Traditional ceramics - clay products such as pottery and bricks,
common abrasives, and cement
• New ceramics - more recently developed ceramics based on oxides,
carbides, etc., and generally possessing mechanical or physical
properties superior or unique compared to traditional ceramics
• Glasses - based primarily on silica and distinguished by their non-
crystalline structure
7. Mechanical Properties of ceramics
• Mechanical properties are important in
structural and building materials. They include
many properties used to describe
the strength of materials such
as: elasticity / plasticity, tensile
strength, compressive strength, shear
strength, fracture toughness & ductility (low
in brittle materials), and indentation hardness.
8.
9.
10.
11.
12. Refractories
• Mineral products , stable at high temp
• Used in construction of furnaces and allied
equipment.
• Acid, basic and neutral
13. Processing of Ceramics
• The majority of ceramic components are produced by sintering (firing) compacted powder
pre-forms. These pre-forms are usually referred to as 'green-state' and numerous powder-
forming processes have been developed including pressing and extrusion. However, the
powder consists of solid, hard, brittle particulates. A binder is usually added to enhance the
flow properties of the powder, leading to higher density in the final component. The binders
used vary according to the process to be used and the desired properties of the final product.
• Once the ceramic powders have been compacted to produce the green-state component,
they are approximately 50-70% dense. They are also relatively weak, but with care can be
machined to quite complex geometries. To impart strength, the green state components are
usually sintered.
• Initial heating (up to 250°C) volatilizes any organic processing additives (binders) and
decomposable constituents. As the temperature increases to the firing temperature,
sintering of the ceramic powders begins and is usually accompanied by shrinkage. This
shrinkage must be accounted for when machining in the green-state.
• Sintering can be assisted (decreasing temperature or time requirements) by the deliberate
addition of additives which will react to produce lower melting point secondary phases
(liquid phase sintering). These secondary phases can be envisaged as 'glueing' the ceramic
particles together. This is the case for ceramics such as alumina. Sometimes, sintering aids are
added to enhance diffusion (which aids sintering), this is the case when additions of boron or
aluminium are added to hot pressed silicon carbide.
14.
15. • Slipcasting is a technique for the mass-production
of pottery and ceramics, especially for shapes not easily made on
a wheel. A liquid clay body slip (usually mixed in a blunger) is
poured into plaster moulds and allowed to form a layer, the cast, on
the inside cavity of the mould. In a solid cast mould, ceramic
objects such as handles and platters are surrounded by plaster on
all sides with a reservoir for slip, and are removed when the solid
piece is held within. For a hollow cast mould, once the plaster has
absorbed most of the liquid from the outside layer of clay the
remaining slip is poured off for later use. The cast piece is removed
from the mould, (trimmed neatly) and allowed to dry. This produces
a greenware piece which is then dried before firing, with or without
decoration.
16.
17. • Sintering is the process of compacting and
forming a solid mass of material by heat
and/or pressure without melting it to the
point of liquefaction. Sintering happens
naturally in mineral deposits or as a
manufacturing process used with metals,
ceramics, plastics, and other materials.