DIFFUSION OF Ni63 IN IRON, COBALT, NICKEL, AND TWO IRON–NICKEL ALLOYS

1959 ◽  
Vol 37 (10) ◽  
pp. 1629-1636 ◽  
Author(s):  
J. R. MacEwan ◽  
J. U. MacEwan ◽  
L. Yaffe
Keyword(s):  
Surface Activity ◽  
Nickel Alloys ◽  
Nickel Content ◽  
The Self ◽  
Iron Cobalt ◽  
Self Diffusion ◽  
Cobalt Nickel ◽  
Iron Nickel ◽  
Iron Nickel Alloys ◽  
Cobalt And Nickel

The self-diffusion of nickel and the diffusion of Ni63 into iron, cobalt, and two iron–nickel alloys was studied using the technique of decrease in surface activity, The nickel self-diffusion results are compared to previously reported values. Nickel is found to diffuse more slowly than iron in the iron-rich portion of the iron–nickel system. The rate of nickel diffusion increases with increasing nickel content. A comparison is made between the present results for diffusion of Ni63 into iron, cobalt, and nickel with reported values for diffusion of Co60 and Fe59 in the same metals. In each solvent, the magnitudes of the activation energies, Q, are such that QNi > QCo > QFe.

MAGNETORHEOLOGICAL MATERIALS BASED ON IRON ALLOY PARTICLES

1996 ◽  
Vol 10 (23n24) ◽  
pp. 3335-3341 ◽  
Author(s):  
Anthony J. Margida ◽  
Keith D. Weiss ◽  
J. David Carlson
Keyword(s):  
Nickel Alloys ◽  
Relative Concentration ◽  
Iron Alloy ◽  
Cobalt Alloy ◽  
Iron Cobalt ◽  
Alloy Particles ◽  
Iron Nickel ◽  
Iron Based ◽  
Iron Cobalt Alloys ◽  
Iron Nickel Alloys

A magnetorheological material containing iron alloy particles demonstrates magnetorheological strength dependent upon the elements of the alloy and relative concentration of the alloy elements. Selected iron/cobalt alloys demonstrate improved yield strength over traditional carbonyl iron based MR materials when the iron-cobalt alloy has an iron-cobalt ratio ranging from about 30:70 to 95:5. The iron-nickel alloys which have an iron-nickel ratio ranging from about 90:10 to 99:1 maintains superior strength over iron-nickel alloys outside that range.

Thermal Conductivity of Some Commercial Iron-Nickel Alloys

1961 ◽  
Vol 83 (4) ◽  
pp. 403-407 ◽  
Author(s):  
T. W. Watson ◽  
H. E. Robinson
Keyword(s):  
Thermal Conductivity ◽  
Steady State ◽  
Digital Computer ◽  
Nickel Alloys ◽  
Nickel Content ◽  
Steady State Method ◽  
Iron Nickel ◽  
State Method ◽  
Iron Nickel Alloys ◽  
Commercial Iron

Results of laboratory determinations of thermal conductivities in the temperature range −150 to 540 deg C are presented for 12 iron-nickel alloys. Six samples are of low nickel content, in the range from 1 to 9 per cent, and six others have nickel contents in the range from 35 to 80 per cent. A sample of AISI 1015 steel is included for comparative purposes. The determinations were made on bar specimens about 2.54 cm in diameter and 37 cm long, by an absolute steady-state method with heat flowing longitudinally in the bar. Computation of results from observed data was effected by means of a digital computer.

The magnetization of face-centred cubic and body-centred cubic iron + nickel alloys

1963 ◽  
Vol 272 (1348) ◽  
pp. 119-132 ◽  
Keyword(s):  
Crystal Structures ◽  
Nickel Alloys ◽  
Single Phase ◽  
Nickel Content ◽  
Nickel Atom ◽  
Small Range ◽  
Bohr Magneton ◽  
Iron Nickel ◽  
Iron Nickel Alloys

Magnetizations of single phase binary iron + nickel alloys have been measured and Bohr magneton numbers p estimated for body-centred cubic alloys with 0 to 32.3 at. % of nickel and for face-centred cubic alloys with 31 to 80 %. Initially p increases at the rate 1.1 ±0.1 μ B per nickel atom in iron-rich b.c.c. alloys. In the f.c.c. phase p increases as the nickel content decreases, and then falls very sharply as the nickel content further decreases below 40 %. In the small range of composition where either phase can be obtained, the magnetization differs widely between the two crystal structures.

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