CAJ | 학술논문

为了给研究合金在凝固过程中发生收缩、迁移现象和偏析提供科学依据,我们用改良静滴法对钨浓度为0到15%的液态Ni-W二元合金的密度进行了测量.结果表明:Ni-W二元合金的液态密度随温度的增加而减少,但随合金中钨浓度的增加而增加;液态Ni-W二元合金的摩尔体积随温度和合金中钨浓度的增加而增加.金属钨在Ni-W二元合金中的偏摩尔体积约为(10.80-1.35×10-3T)×10-6m3·mol-1.
위료급연구합금재응고과정중발생수축、천이현상화편석제공과학의거,아문용개량정적법대오농도위0도15%적액태Ni-W이원합금적밀도진행료측량.결과표명:Ni-W이원합금적액태밀도수온도적증가이감소,단수합금중오농도적증가이증가;액태Ni-W이원합금적마이체적수온도화합금중오농도적증가이증가.금속오재Ni-W이원합금중적편마이체적약위(10.80-1.35×10-3T)×10-6m3·mol-1.
In order ot provide a scientific base for studying the shrinkage, transport phenomena and macrosegregation during the solidification of an alloy, the density of liquid binary Ni-W alloys with tungsten concentration from 0 to 15 mass% was measured by a modified sessile drop method. It has been found that the density of the liquid Ni-W alloys decreases with increasing temperature, but increases with the increase of tungsten concentration in the alloys. The molar volume of liquid Ni-W binary alloys increases with the increase of temperature and tungsten concentration. The partial molar volume of tungsten in Ni-W binary alloy has been evaluated approximately as (10.80-1.35× 10-3T) × 10-6 m3·mol-1.