轴套镀层脱落原因
Reasons for the coating detachment of the shaft sleeve
摘 要
某滑动轴承的轴套镀层在运行2 d后发生脱落。采用宏观观察、金相检验、扫描电镜及能谱分析等方法分析轴套镀层脱落的原因。结果表明:轴套镀层中存在大块带状组织,破坏了镀层的连续性;在工作过程中,轴套受到摩擦力的作用,在镀层薄弱处萌生裂纹,最终导致轴套镀层脱落。
镀层
脱落
带状组织
shaft sleeve
coating
falling
banded structure
Abstract
The coating on the shaft sleeve of a certain sliding bearing had fallen off after 2 d of operation. The reasons for the detachment of the shaft sleeve coating were analyzed by macroscopic observation, metallographic examination, scanning electron microscopy and energy spectrum analysis. The results show that there were large banded structures in the coating of the shaft sleeve, which disrupted the continuity of the coating. During the working process, the shaft sleeve was subjected to frictional force, which caused cracks to initiate at the weak point of the coating, ultimately led to the detachment of the shaft sleeve coating.
中图分类号 TB31 TG115. 2 DOI 10. 11973/lhjy-wl202311016
所属栏目 质量控制与失效分析
基金项目
收稿日期 2023/1/9
修改稿日期
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备注杨金艳(1979-),女,硕士,高级工程师,主要从事金属材料理化检验及失效分析工作yangjinyan001@163.com
引用该论文: YANG Jinyan,LIU Xiaoxian,LI Lei. Reasons for the coating detachment of the shaft sleeve[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2023, 59(11): 59～61
杨金艳,刘小娴,李磊. 轴套镀层脱落原因[J]. 理化检验－物理分册, 2023, 59(11): 59～61
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参考文献
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【2】谢勇,郭太雄,胡劲. 热镀锌板镀层铁含量对镀层剥离性的影响[J]. 腐蚀与防护,2012,33(10):889-892.
【3】金永清,郭太雄,董学强,等. Mg含量对1. 6%Al锌铝镁合金镀层组织影响研究[J]. 钢铁钒钛,2022,43(5):191-196.
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