Feng XIAO
,
Liang FANG
材料科学技术（英文）
Density of molten Ni and Ni-W alloys was measured in the temperature range of 1773~1873 K with a sessile drop method. The density of molten Ni and Ni-W alloys trends to decrease with increasing temperature. The density and molar volume of the alloys trend to increase with increasing W concentration in the alloys. The calculation result shows an ideal mixing of Ni-W alloys.
关键词:
Density
,
null
,
null
,
null
肖锋
,
刘兰霄
,
杨仁辉
,
傅亚
,
方亮
,
赵红凯
稀有金属材料与工程
采用改进静滴法测定了1773～1873 K温度范围内熔融Ni-(5～10)W(质量分数,%)合金在Al2O3基板上于Ar+3%H2气氛下的表面张力数据.熔融Ni-W合金的表面张力随着温度的升高而降低.在此基础上采用Butler模型推导了表面张力随温度与浓度的变化情况,计算了合金体系中元素的偏聚情况.表面张力的计算结果与测量值的符合度较高.W在合金表面的浓度低于体相浓度.
关键词:
表面张力
,
Ni-W合金
,
偏聚
