张明龙,程继贵,陈会培,李剑峰,罗来马,吴玉程

• 1:合肥工业大学材料科学与工程学院
• 2:安徽省粉末冶金工程技术研究中心

摘要(Abstract)：

以偏钨酸铵、硝酸铜和硝酸钇为原料,采用EDTA-柠檬酸法制备了含Y_2O_3(0~0.8%)的Y_2O_3/W-20Cu复合粉体,经成形、烧结获得了Y_2O_3/W-Cu复合材料烧结体。对Y_2O_3/W-Cu复合粉体的物相、形貌进行表征;考察了Y_2O_3的添加对Y_2O_3/WCu复合粉体的烧结性能以及烧结体的微观组织、物理和力学性能的影响。结果表明,所制备的Y_2O_3/W-Cu复合粉体的粒度在100~200 nm,粉体具有良好的烧结性能,其成形压坯经1200℃烧结后,相对密度可达98%以上,导电率高于41%IACS。此外,适量Y_2O_3的添加,可改善W-Cu材料的组织和力学性能,添加Y_2O_3的Y_2O_3/W-20Cu材料的抗弯强度和维氏硬度可达1040 MPa和312 HV。

关键词(KeyWords)： W-Cu复合材料;超细粉体;Y2O3添加;烧结性能

Abstract:

Keywords:

基金项目(Foundation): 科技部ITER专项(2014GB121001)

作者(Author): 张明龙,程继贵,陈会培,李剑峰,罗来马,吴玉程

DOI: 10.13289/j.issn.1009-6264.2016.07.004

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