盛银莹,张治国,李卫

• 1:暨南大学理工学院材料科学与工程系
• 2:广东省耐磨及特种功能材料工程技术研究开发中心

摘要(Abstract)：

采用阴极微弧碳氮共渗表面处理方法,在尿素+氯化钾水溶液体系下,研究了45钢表面碳氮共渗过程的放电特性。分析了处理后表面渗层的物相组成和显微组织形貌。结果表明,随电流增加,45钢的阴极微弧碳氮共渗过程可分成4个阶段,不同阶段对应不同的物理化学过程。其中,在辉光放电阶段产生的活性C、N粒子用于碳氮共渗。经微弧碳氮共渗处理后,碳氮共渗层表面呈多孔形貌,增大电源频率会增加粗糙度,提高占空比可使试样表面更平整。C元素和少量N元素渗入工件表面;共渗层主要由马氏体和少量铁碳化合物、铁氮化合物组成。

关键词(KeyWords)： 微弧碳氮共渗;45钢;电流电压特性;表面形貌

Abstract:

Keywords:

基金项目(Foundation): 国家-广东联合基金重点项目(U1034002);; 广东省科技计划项目(2010B010800024,2011B090400519)

作者(Author): 盛银莹,张治国,李卫

DOI: 10.13289/j.issn.1009-6264.2016.s1.024

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