采用超音速火焰喷涂方法在300M钢基体上制备了WC-10Co4Cr涂层,对其和在300M钢上的电镀铬层进行了高周疲劳试验,采用SEM及EDS等对经高周疲劳后的涂层开裂和剥落机理进行了研究.结果表明:经过2/3疲劳寿命周次的高周疲劳后,WC-10Co4Cr涂层出现多条平行周向裂纹,裂纹与载荷方向垂直,为正断;试样疲劳断裂后,WC-10Co4Cr涂层断口附近有剥落,随载荷的增加,剥落面积增大;而电镀铬层在试样断裂后表面裂纹也不十分明显,高载荷下断裂后有少许镀层剥落.
所属栏目
试验研究
收稿日期
2008/12/32009/7/16
作者单位
邓春明:广州有色金属研究院, 广州 510651
刘敏:广州有色金属研究院, 广州 510651
周克崧:广州有色金属研究院, 广州 510651
宋进兵:广州有色金属研究院, 广州 510651
肖伟昊:广州有色金属研究院, 广州 510651
备注
邓春明(1976-),男,江西黎川人,博士.
引用该论文:
DENG Chun-ming,LIU Min,ZHOU Ke-song,SONG Jin-bing,XIAO Wei-hao.High Cycle Fatigue Damage of HVAF WC-10Co4Cr Coating[J].Materials for mechancial engineering,2010,34(1):1～4
邓春明,刘敏,周克崧,宋进兵,肖伟昊.超音速火焰喷涂WC-10Co4Cr涂层的高周疲劳损伤[J].机械工程材料,2010,34(1):1～4
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