高压下Pd-Ni-P过饱和固溶体的形成

本文中研究了Pd₄₀Ni₄₀P₂₀金属玻璃小球(直径在0.1—1.0mm的范围)在4GPa压力下的晶化过程。与常压晶化实验相比,高压下样品的晶化温度以15K/GPa的速率增加。在接近熔点进行高压退火时,获得单相过饱和固溶体。其晶体结构为面心立方。将铸态Pd₄₀Ni₄₀P₂₀合金在高压下进行退火,同样得到了该固溶相,表明该相为一新的高压相。关键词：

FORMATION OF Pd-Ni-P SUPERSATURATED SOLID SOLUTION UNDER HIGH PRESSURE

This paper reports the results of crystallization of bulk metallic glassy sphere of Pd₄₀Ni₄₀P₂₀ (with diameter range from 0.1 to 1.0 mm) under 4GPa pressure. Compared with the result obtained at ambient pressure, the crystallization temperature of the glass increased with pressure at the rate of 15K/GPa. As annealing temperature under pressure closed to the melting temperature of the sample, the single supersaturated solid solution phase with f.c.c. structure was obtained. The same phase was also obtained by annealing a cast Pd₄₀Ni₄₀P₂₀ alloy under high pressure. This result indicates that the new phase is a high pressure phase.