scholarly journals Phase composition of galvanic iron-nickel alloys obtained using pulsed current

2021 ◽  
Vol 22 (1) ◽  
pp. 141-145
Author(s):  
R.P. Ganich ◽  
V.O. Zabludovsky ◽  
V.V. Artemchuk ◽  
Y.V. Zelenko ◽  
R.V. Markul
Keyword(s):  
Phase Composition ◽  
Nickel Alloys ◽  
Pulse Current ◽  
Equilibrium Diagram ◽  
Component Composition ◽  
Pulse Action ◽  
Unipolar Pulse ◽  
Iron Nickel ◽  
The Moment ◽  
Iron Nickel Alloys

The paper presents the results of studying the phase composition of iron-nickel alloys obtained by unsteady electrolysis. It was found that the use of a unipolar pulse current leads to a significant increase in the crystallization overvoltage at the crystallization front at the moment of the pulse action, which affects the component composition of the coatings. The phase composition of the alloys formed at the cathode differs from that shown in the iron-nickel equilibrium diagram.

scholarly journals A magnetic study of the two-phase iron-nickel alloys. II

1943 ◽  
Vol 181 (986) ◽  
pp. 303-313 ◽  
Keyword(s):  
Nickel Alloys ◽  
Equilibrium Diagram ◽  
Equilibrium Phase ◽  
Equilibrium Concentration ◽  
Phase Segregation ◽  
Two Phase ◽  
Saturation Intensity ◽  
Iron Nickel ◽  
Practical Limit ◽  
Iron Nickel Alloys

The method of using measurements of magnetic saturation intensity of annealed iron-nickel alloys for the determination of the equilibrium phase boundaries, as demonstrated by Pickles & Sucksmith, has been extended. The phase diagram of the system has been determined accurately between 525 and 365° C. The mechanism of phase segregation from the single-phase a-state has been studied, where it was found that contrary to the usual case, one of the phases crystallizes out in its equilibrium concentration whilst the residue of the alloy progressively and uniformly approaches equilibrium com position. It was possible to study and express quantitatively the rate of attainment of equilibrium , and on evidence obtained in this way the view is based that the lower practical limit of temperature where the equilibrium diagram can be studied by annealing experiments has been reached.

Magnetic moment of iron–nickel invar alloys from 4 to 80 K

1970 ◽  
Vol 48 (3) ◽  
pp. 264-274 ◽  
Author(s):  
R. W. Cochrane ◽  
G. M. Graham
Keyword(s):  
Magnetic Moment ◽  
Nickel Alloys ◽  
Face Centered Cubic ◽  
Invar Alloys ◽  
Spin Wave Excitations ◽  
Iron Nickel ◽  
Face Centered ◽  
The Moment ◽  
Iron Nickel Alloys ◽  
The Magnetic Field

The magnetic moment of several ferromagnetic face-centered-cubic iron–nickel alloys in the invar region have been investigated at low temperatures, as a function of both the magnetic field and the temperature. A vibrating-sample magnetometer was used, for which relative changes in the moment of 3 parts in 105 could be resolved. Such resolution has permitted a detailed analysis of the temperature dependence of ΔM/M, the relative deviation of the magnetic moment from its value at 0 K, in terms of a contribution arising from spin-wave excitations, varying as T3/2, and one from single-particle excitations, varying as T2, both of these at constant volume, together with a term describing the effect of volume dilation on the moment. The fits to the data for H = 10 kOe yield, for 34 at. % Ni:[Formula: see text]and for 40 at. %Ni:[Formula: see text]

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.

Diffusivity of nitrogen in iron-nickel alloys

1978 ◽  
Vol 12 (12) ◽  
pp. 1111-1114 ◽  
Author(s):  
Hans Jürgen Grabke ◽  
Else Marie Petersen
Keyword(s):  
Nickel Alloys ◽  
Iron Nickel ◽  
Iron Nickel Alloys
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