段俊彪,国秀花,皇涛,宋克兴,冯江,王旭

• 1:河南科技大学材料科学与工程学院河南省有色金属材料科学与加工技术重点实验室
• 2:河南省科学院

摘要(Abstract)：

采用放电等离子烧结(SPS)制备了W-25 mass%Cu复合材料，研究了烧结温度(900、950、1000、1050℃)对W-25 mass%Cu复合材料微观组织和性能的影响规律，重点研究了其耐电弧烧蚀行为。结果表明：采用SPS工艺制备的W-25 mass%Cu复合材料的组织分布均匀；随着烧结温度的升高，复合材料的致密度、导电率和硬度呈现出先增加后减小的趋势。当烧结温度为1000℃时，W-25 mass%Cu复合材料的综合性能最佳，其致密度、导电率和硬度最高，分别为96.7%、42.86%IACS和205.5 HB;压缩强度和断裂应变取得最大值，分别是875 MPa和26%。W颗粒的动力学生长行为研究结果表明晶格扩散是W颗粒长大的主导机制。在电弧烧蚀过程中，随着烧结温度的升高，W-25 mass%Cu复合材料表面的侵蚀区域先变小后增大、烧蚀坑逐渐变浅、烧蚀坑直径变宽。与900℃烧结制备的W-25 mass%Cu复合材料相比，1000℃烧结制备的W-25 mass%Cu复合材料的烧蚀坑直径扩大了47.3%,烧蚀坑深度降低了50%。

关键词(KeyWords)： W-25 mass%Cu复合材料;微观组织;烧结动力学;致密度;耐电弧烧蚀性能

Abstract:

Keywords:

基金项目(Foundation): 河南省科技攻关计划项目(212102210110);; 河南省高等学校青年骨干教师培养计划项目(2018GGJS045);; 中国工程科技发展战略河南研究院战略咨询研究项目(2021HENZDA02)

作者(Author): 段俊彪,国秀花,皇涛,宋克兴,冯江,王旭

DOI: 10.13289/j.issn.1009-6264.2022-0389

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