文志春,金青林,宋群玲,蒋业华

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

采用金属/气体共晶定向凝固工艺(Gasar),在不同氢气压力条件下制备了藕状多孔Cu-Cr合金,研究了氢气压力对藕状多孔Cu-Cr合金气孔结构和形貌因子的影响。结果表明,当氢气压力大于气孔形成临界压力时,随氢气压力的增大,气孔率和孔隙密度增大,而平均气孔直径缓慢减小;当氢气压力大于气体逸出临界压力时,气孔率和平均气孔直径急剧减小,而孔隙密度大幅增加;此外,随氢气压力的增加,气孔形貌因子逐渐减小。

关键词(KeyWords)： 多孔Cu-Cr合金;Gasar;氢气压力;气孔结构;气孔形貌

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51164018);; 云南省自然科学基金(201132052)

作者(Author): 文志春,金青林,宋群玲,蒋业华

DOI: 10.13289/j.issn.1009-6264.2014.11.009

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