Zr基合金/ZrC在1253K下的润湿行为及前驱膜形成条件研究  

Wetting behavior and conditions for the formation of precursor film in Zr-based alloys/ZrC at 1253K

作　　者：隋然[1] 林巧力[2] 

机构地区：[1]兰州理工大学技术工程学院,兰州730050 [2]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050

出　　处：《中国科技论文》2015年第4期492-494,共3页China Sciencepaper

基　　金：国家自然科学基金资助项目(51301083);高等学校博士学科点专项科研基金资助项目(20136201120001)

摘　　要：采用改良座滴法研究了Zr基合金Zr50Cu50、Zr50Cu40Al10和Zr55Cu30Al10Ni5与ZrC在1 253K下的等温润湿行为及界面结构。结果表明,3种Zr基合金与ZrC的润湿,随着组元种类的增加润湿性逐渐改善,同时形成了前驱膜,且前驱膜的宽度随组元种类的增加而变宽。热力学分析表明,前驱膜的形成需要满足固-液界面上有强烈的相互作用,同时又能保持弱的界面反应性;铺展动力学分析表明,带有前驱膜特征(即吸附润湿)的铺展可以用分子动力学模型来描述。The wetting behavior and interracial structures of Zr-based allogys/ZrC at 1 253 K were studied by using a modified ses- sile drop method. The wettability was improved by adding the constituent elements in the system, and a transition of the precur- sor film was also developed together with the increase of width. Based on the thermodynamic analysis, the occurrence of the pre- cursor film needs to satisfy the condition that active composition has a strong affinity with substrate, and meanwhile can remain relatively weak reactivity. The results from the spreading dynamics indicated that the wetting with precursor film （i. e. , adsorp- tion wetting） can be described by molecular dynamic model.

关 键 词：ZR基合金 润湿 界面反应 吸附 

分 类 号：TG146.414[一般工业技术—材料科学与工程]