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| 熔融Ni-W合金的表面张力研究 | |
| 引用本文： | Xiao Feng,肖锋,刘兰霄,杨仁辉,傅亚,方亮,赵红凯. 熔融Ni-W合金的表面张力研究[J]. 稀有金属材料与工程, 2008, 37(8) |
| 作者姓名： | Xiao Feng 肖锋 刘兰霄 杨仁辉 傅亚 方亮 赵红凯 |
| 作者单位： | 1. Chongqing Institute of Technology,Chongqing 400050,China 2. 重庆工学院,重庆,400050 3. 重庆大学,重庆,400044 |
| 基金项目： | sRF for the ROCS，hongqing Bureau of Personnel，SF of Chongqing Municipality，CQIT |
| 摘 要： | 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 |
Surface Tension of Molten Nickel-Tungsten Alloy |
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| Xiao Feng. Surface Tension of Molten Nickel-Tungsten Alloy[J]. Rare Metal Materials and Engineering, 2008, 37(8) | |
| Authors: | Xiao Feng |
| Abstract: | Surface tension of molten Ni-(5～10)W (mass fraction,%)alloys was measured at the temperature range of 1773～1873 K using an improved sessile drop method with an alumina substrate in an Ar+3%H2 atmosphere.The surface tension of molten Ni-W alloys decreases with increasing of temperature.On the basis of experimental data,the surface tension of molten Ni-W alloys was also theoretically deduced both as functions of concentration and temperature using a model of Butler's equation.The surface segregation in Ni-W system was calculated.The measured results agree well with a model for the surface tension.The surface concentration oftungsten is lower than that in bulk. |
| Keywords: | surface tension Ni-W alloys segregation |
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