李养良,潘东,王洪涛,甘春飞,郭鑫,盛永奇,李文欣

• 1:九江学院
• 2:九江市绿色再制造重点实验室

摘要(Abstract)：

采用CO2激光器在45钢基体表面熔覆稀土氧化物La2O3的Fe基涂层;借助于扫描电镜(SEM)、X射线衍射仪(XRD)、能谱仪(EDS)、显微硬度计、ML-100型磨粒磨损试验机对涂层组织结构、物相、组成成分、硬度及耐磨性能进行了分析。结果表明,添加稀土能够减少甚至消除Fe基合金涂层中存在的孔洞,细化晶粒,提高致密性;涂层的硬度和磨损形貌表明,添加稀土能够小幅度地提高涂层的硬度,但能够使涂层表面的硬度值比较均匀一致,从而引起磨损表面的相对光滑。Fe基合金涂层的磨损机理为轻微的磨粒磨损,45钢的磨损机理为磨粒磨损与粘着磨损。

关键词(KeyWords)： 激光熔覆;稀土氧化物;铁基合金;显微硬度;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 江西省自然科学基金项目(2010GQC0117);; 国家自然科学基金项目(51001056);; 2010年九江学院大学生自主创新实验项目(10XSCXXSY53)

作者(Author): 李养良,潘东,王洪涛,甘春飞,郭鑫,盛永奇,李文欣

DOI: 10.13289/j.issn.1009-6264.2013.03.028

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