靳鸣,贺定勇,吴旭,王国红,李小璇,周正,曹庆

• 1:北京工业大学材料科学与工程学院
• 2:北京市生态环境材料及其评价工程技术研究中心
• 3:斯普瑞科技有限公司

摘要(Abstract)：

以机械混合后的2205不锈钢、钛铁和Cr3C2粉末为原料,在16Mn钢的表面制备了TiC增强不锈钢激光熔覆层,并对其显微组织、摩擦磨损及电化学腐蚀行为进行了研究。结果表明:熔覆层组织主要由α-Fe、γ-Fe和TiC析出相构成,Ti和C元素反应充分,无Cr_3C_2陶瓷相残留,也无其他杂相生成;随TiC比例的增加,γ-Fe相含量减少,TiC析出形貌由尺寸较小的块状转变为尺寸相对较大的十字放射状; TiC强化相的引入有效地提高了熔覆层的显微硬度和耐磨性,且降低了熔覆层粘着磨损的倾向,并增强了其抗磨粒磨损的能力;相比于单一2205不锈钢熔覆层,TiC强化不锈钢熔覆层在3.5%NaCl水溶液中的钝化能力下降,但同步补充Cr元素能够有效改善其耐腐蚀性能。

关键词(KeyWords)： 激光熔覆;2205不锈钢;TiC;耐磨性能;耐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2017YFB0306100);; 北京高校基本科研业务费专项资金(PXM2019_014204_500032)

作者(Author): 靳鸣,贺定勇,吴旭,王国红,李小璇,周正,曹庆

DOI: 10.13289/j.issn.1009-6264.2019-0161

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