nickel

1. NICKEL
Presented By:-
Shefali kandpal( R240215022)
Tejus kumar ( R240213036)

2. Content
1.Introduction to nickel
2.Ores of Nickel
3.Extraction of Nickel
4.Classification of Ni-alloys
5.Some other Nickel alloys

3. Nickel was first isolated and classified as a
chemical element in 1751 by Axel Fredrik
Cronstedt from Sweden

4. Introduction to Nickel
•Belongs to the transitionmetals.
•Hard and ductile
•Crystal structure _ F C C
•Atomic number _ 28
•Atomic weight _ 58.6934
•Density (g/ cm
3 ) _ 8.89
•Melting point (°c) _ 1455
•Boiling point(°c) _ 2913
Note:-
•One of four elements that are magnetic at near or room
temperature
•Curie temperature is 355°c (means it is non-magnetic above this
temperature)

5. Contd……
Properties:-
• Silvery shiny appearance
• High toughness and ductility
• Good high and low temperaturestrength
• High oxidation resistance
• Good corrosion resistance (slow rate of oxidation at room temp.)
• Ferro-magnetic.
Limitations:-
• Not mixed with alloyingelements
• Relatively high cost.

6. • Nickel-copper alloys (Monels)
• Nickel-chromium alloys
• Nickel-base superalloys
Classification of Ni-Alloys

7. • Ni and Cuform complete solid solution.
• Ni-Cu alloy contains (67%Ni and 33%Cu)called Monels or Nicorros
TherearetwotypesofMonels:-
1) Monel Metal:-
• consists of (67%Ni ,33%Cu, 2% Mn and 2.5% Fe )
Properties
• High strength and toughness
• Good weldability
• Excellent corrosion resistance
• Resistant to corrosion in seawater and has high electrical
resistivity ,thus making it useful in the marine industry.
Nickel Copper Alloys (Monels)

8. Applications:-
• Steamturbine blades
(UTS-525MPa & Yield Strength-230MPa)
• High temperature valves
• Centrifugal pump impellors
2) K-Monel:-
• Consistsof (66%Ni ,29%Cu, 2.57%Al ,Mn ,C).
Properties:-
• Non-magnetic
• Al increases strength & hardness.
Applications:-
Pump shafts, springs & valve stemsetc.

9. Nickel ChromiumAlloys
1) Inconel 600:-
•Family of austenitic nickel-chromium- based superalloys.
•Consists of (72%Ni ,14-17%Cr,6-10%Fe,1%Mn,0.5%Cu,0.5%Si,
0.15% C, 0.05% s).
• used at high temperatures.
Properties:-
•High corrosion resistance at hightemperature.
•High strength andworkability.
•Difficult to machine.
Applications:-
•Gas turbine combusters and blades
•Pulp and paper industry
•Soap manufacture

10. 2) Nichrome:-
• consists of (80%Ni ,20%Cr).
Properties:-
• high melting point
• high electrical resistivity
Applications:-
• resistance heating coils
• rocket igniters
• jewellery castingsupports
• ceramic manufacturingindustry