周浪,邹爱华,夏天成,顾晓晓

• 1:华中科技大学无锡研究院
• 2:江西师范大学化学化工学院
• 3:南京航空航天大学材料科学与技术学院

摘要(Abstract)：

在不同氨水浓度的电解液中，采用液相等离子体渗透技术在38CrMoAl钢表面制备了渗氮层。采用光学显微镜(OM)、扫描电镜(SEM)和X射线衍射仪(XRD)等对渗氮层的显微组织、相组成进行了观察和分析，并采用Parstat2273电化学工作站测试了渗氮层的耐蚀性能，并对其显微硬度和耐磨性进行了测试，研究了氨水浓度对38CrMoAl钢液相等离子体渗氮显微组织与性能的影响。结果表明：随着氨水浓度的增大，渗氮层中的白亮层厚度呈增加趋势，分布着针状的氮化物和细小碳化物的扩散层厚度和渗氮层最大显微硬度值呈先增加后降低的趋势；当氨水浓度为60%时，渗氮层厚度达160μm,其中扩散层为112μm,渗氮层硬度最高为1023 HV0.1,约是基体硬度的3.5倍；渗氮层主要以Fe_2N、Fe_3N相等为主；渗氮层的耐磨性能和耐腐蚀优于基体。

关键词(KeyWords)： 氨水浓度;38CrMoAl钢;液相等离子体;渗氮层;性能;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52027816)

作者(Author): 周浪,邹爱华,夏天成,顾晓晓

DOI: 10.13289/j.issn.1009-6264.2023-0054

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