Zinc-nickel Alloy Research Articles

The thermodynamic properties of α, f.c.c., nickel-zinc alloys

The thermodynamic properties of solid nickel-zinc alloys in the α, f.c.c., phase were obtained from vapor pressure data measured by the dew point method in the range 900–1100°C. The system displays negative deviations from ideality. At 1200°K for xZn = 0.2798, FαE + xΔFL→αZn is −2382 cal/mole; HαE + ΔHL→αZn is −5158 cal/mole; and SαE + xΔSL→αZn is −2.24 cal/mole °K. The measured negative excess entropy of the α phase at high temperatures is discussed in terms of the calculated magnetic entropy based on saturation magnetization data for the alloys, and the vibrational entropy based on Debye temperatures from temperature dependent X-ray intensity data. The specific heat of three f.c.c. alloys was measured from 1.4 to 4.0°K. Some limitations of the electronic specific coefficient γ, and the Debye temperatures derived from the latter measurements are presented.

硫酸塩浴より電着したニッケル・亜鉛合金の水素および酸素過電圧

硫酸塩浴より電着したニッケル・亜鉛合金の水素および酸素過電圧

Study of the Deposition Potentials and Microstructures of Electrodeposited Nickel-Zinc Alloys

Study of the Deposition Potentials and Microstructures of Electrodeposited Nickel-Zinc Alloys

TheK-Absorption Edges andKβ2,5-Emission Lines of Two Zn-Ni Alloys

A double crystal spectrometer has been used to measure the shapes of the $K{\ensuremath{\beta}}_{2,5}$-emission lines and the $K$-absorption edges of zinc and nickel in two zinc-nickel alloys containing 17 percent zinc and 30 percent zinc by weight, respectively. These lines arise from transitions of valence and 3d electrons into the empty $K$ shell. In the two alloys the zinc emission line and absorption edge are shifted about a volt toward lower energies and the line is narrowed. Nickel is changed only slightly. The results indicate that the higher energy valence electrons of zinc are shared with nickel and probably go into $3d$ states about the nickel atoms.

The Paramagnetic Susceptibility of Copper-Nickel and Zinc-Nickel Alloys

Alloys of nickel were prepared with 0 to 60 percent copper or 0 to 30 percent zinc. Their susceptibilities above their Curie temperatures were measured as a function of the temperatures using a Weiss-Fo\ex magnetic balance at a field of 11,000. Plots of $\frac{1}{\ensuremath{\chi}}$ against $T$ showed that the Curie-Weiss law holds only in restricted ranges of temperature, the curve becoming concave towards the $T$ axis at high temperatures, especially for the alloys of low nickel content. The susceptibility at a given temperature decreases less rapidly than linearly with percent copper or zinc added. These results are discussed from the points of view of the Heisenberg and the Bloch models.

The effect of superposed alternating current on the deposition of zinc-nickel alloys

The effect of superposed alternating current on the deposition of zinc-nickel alloys