杨颜萍,魏世忠,潘昆明,徐流杰,周玉成,李秀青

• 1:河南科技大学高温结构与功能材料河南省重点实验室
• 2:河南科技大学金属材料磨损与控制技术国家地方联合工程中心

摘要(Abstract)：

利用放电等离子烧结技术(SPS)制备了Mo_5SiB_2合金。对不同Mo_5SiB_2含量及相对密度的合金做700℃的循环氧化实验。结果表明:随着合金中的Mo_5SiB_2相含量和致密度的增加,其氧化动力学曲线由直线转变为两个不同的阶段,氧化层由挥发性氧化物MoO_3转变为MoO_2。当试样中Mo_5SiB_2含量和相对密度高时,氧化50 h后其表面会被连续的硼硅酸盐玻璃层覆盖,阻碍氧气的内扩散和MoO_3的挥发,表现出良好的抗氧化性能。

关键词(KeyWords)： Mo_5SiB_2;相对密度;氧化动力学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U1504514)

作者(Author): 杨颜萍,魏世忠,潘昆明,徐流杰,周玉成,李秀青

DOI: 10.13289/j.issn.1009-6264.2019-0052

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