Cd(0.2)-Sn-Zn三元合金高压垂直截面相图的测定  

DETERMINATION OF THE VERTICAL SECTIONS OF THE HIGH PRESSURE PHASE DIAGRAMS OF Cd(0. 2)-Sn-Zn TERNARY ALLOY SYSTEM

作　　者：宋利珠[1] 杨桦[1] 赵慕愚[1] 沈中毅[2] 刘勇[2] 

机构地区：[1]吉林大学化学系,长春130023 [2]中国科学院物理研究所,北京100080

出　　处：《高压物理学报》1993年第3期220-225,共6页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金

摘　　要：采用高压DTA方法,测定了Cd-Sn-Zn三元系中X_(cd)=20 at.％截面的高压垂直截面相图,实验压力为0,0.5,1.0,1.5GPa。所得高压相图与常压相图比较,在p=1.5GPa时低共晶点上移了大约35K,共析组成在加压过程中几乎不变。这种变化趋势与理论计算的结果相同,所得高压相图的液相线与计算相图的一致。Several vertical sections of the phase diagrams of Cd-Sn-Zn ternary alloy system with a constant composition of Xcd= 0. 2 were determined by differential thermal analysis (DTA) at high pressures. Working pressures were 0,0. 5,1. 0, and 1. 5GPa. The eutectic temperature of the system increased by about 35K as the pressure going from atmospheric to 1. 5GPa, though the eutectoid composition changed little with pressure in the experiment. This tendency in temperature shifting coincides with the results of calculated phase diagrams. Experimental liquidus at 1. 5GPa tallies well with that of calculated results.

关 键 词：高压 相图 测定 镉锡锌合金 

分 类 号：O521.2[理学—高压高温物理]