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	固-气共晶定向凝固法测定氢在金属熔体中的扩散系数(英文)
	杨倩倩 ; 刘源 ; 李言祥 ; Qian-qian YANG ; Yuan LIU ; Yan-xiang LI
	2016-03-30 ; 2016-03-30
关键词	氢 扩散系数 液态金属 固-气共晶 定向凝固 hydrogen diffusion coefficient liquid metal solid-gas eutectic unidirectional solidification TG115 TG111.6
其他题名	Hydrogen diffusion coefficient in liquid metals evaluated by solid-gas eutectic unidirectional solidification
中文摘要	基于固-气共晶定向凝固技术和单相合金的定向凝固原理,提出一种测定氢在金属熔体中扩散系数的方法。以Cu-H2系为例,研究氩气分压和熔体过热度对氢在金属熔体中熔点处扩散系数的影响。结果显示,不同工艺参数条件下所获得的扩散系数差别很小,且采用该方法获得的氢在金属Cu熔体中温度相关的扩散系数方程与文献中采用实验方法获得的结果吻合得较好,并验证了该方法的可行性。除Cu-H2系外,还计算了氢在金属Mg、Si以及Cu-34.6%Mn合金熔点温度熔体中的扩散系数值以及温度相关的扩散系数方程。; Based on the solid-gas eutectic unidirectional solidification technique and the principle of unidirectional solidification of single-phase alloy, a new method for evaluating the diffusion coefficient of hydrogen in liquid metals was proposed. Taking Cu-H2 system for example, the influences of argon partial pressure and superheat degree of melt on the diffusion coefficient of hydrogen in liquid metal were studied and the predicted values were similar to each other. The obtained temperature-dependent equation for diffusion coefficient of hydrogen in liquid copper is comparable with experimental data in literature, which validates the effectiveness of this method. The temperature-dependent equations for diffusion coefficient of hydrogen in liquid Mg, Si and Cu-34.6%Mn alloy were also evaluated by this method, along with the values at the melting point of each metal and alloy.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/141752]
专题	清华大学
推荐引用方式 GB/T 7714	杨倩倩,刘源,李言祥,等. 固-气共晶定向凝固法测定氢在金属熔体中的扩散系数(英文)[J],2016, 2016.
APA	杨倩倩,刘源,李言祥,Qian-qian YANG,Yuan LIU,&Yan-xiang LI.(2016).固-气共晶定向凝固法测定氢在金属熔体中的扩散系数(英文)..
MLA	杨倩倩,et al."固-气共晶定向凝固法测定氢在金属熔体中的扩散系数(英文)".(2016).

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