李新,田保红,任凤章,熊毅,魏世忠,马景灵

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

采用不同Al含量(0.20%、0.35%和0.50%,质量分数)的Cu-Al合金薄板内氧化法制备Cu-Al_2O_3薄板复合材料。对比分析了相同内氧化温度和时间下,不同Al含量的Cu-Al合金薄板内氧化制备出的Cu-Al_2O_3薄板复合材料的组织性能。并尝试采用Cu-Al_2O_3薄板复合材料重熔法制备Al_2O_3颗粒弥散分布的Cu-Al_2O_3块体复合材料。结果表明,Cu-Al_2O_3薄板复合材料内氧化层外部晶粒比内部晶粒细小;随着Al质量分数的增加,在相同的内氧化时间下,内氧化层的深度逐渐减小,内氧化层的内部晶粒逐渐粗化;内氧化后所得复合材料的Cu基体中弥散分布着大量的γ-Al_2O_3,γ-Al_2O_3粒径为10~30 nm,粒子间距为20~70 nm;复合材料中的γ-Al_2O_3强化了Cu基体,与合金相比复合材料表面硬度显著增加,从复合材料表面到内部硬度逐渐减小;Cu-Al_2O_3薄板复合材料重熔后Al_2O_3颗粒团聚且上浮;薄板复合材料重熔法制备Al_2O_3颗粒弥散分布的Cu-Al_2O_3块体复合材料不可行。

关键词(KeyWords)： Cu-Al2O3薄板复合材料;内氧化法;Al含量;重熔法;Cu-Al2O3块体复合材料

Abstract:

Keywords:

基金项目(Foundation): 河南省科技创新人才计划(144200510009);; 河南省国际科技合作计划项目(152102410035);; 国家自然科学基金(51201061);; 长江学者和创新团队发展计划基金(IRTl234);; 河南科技大学科技创新团队(2015XTD006)

作者(Author): 李新,田保红,任凤章,熊毅,魏世忠,马景灵

DOI: 10.13289/j.issn.1009-6264.2016.05.005

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