摘要
采用热浸镀铝工艺在不锈钢表面镀铝,分析了浸镀时间与浸镀温度对合金层及纯铝层厚度的影响并获得最佳镀铝工艺参数,在此基础上再进行微弧氧化试验。用剪切法测试了氧化膜与环氧树脂之间的结合强度,采用SEM、XRD和激光共聚焦显微镜对微弧氧化膜的微观成分与结构进行了表征,进而探讨分析了不锈钢微弧氧化处理对其与环氧树脂粘接性能的影响。结果表明:适宜的浸镀温度为710℃,浸镀时间为11 min;微弧氧化膜主要由α-Al2O3和γ-Al2O3组成,不同微弧氧化时间下氧化膜产物基本相同;随着氧化时间增加,陶瓷膜表面粗糙度增大,微弧氧化膜-环氧树脂的结合强度增大,当时间增至30 min时,膜层表面粗糙度最大值为1.265μm,结合强度增加到最高值33.20 MPa,比未处理过的试样结合强度提高了2.8倍。
The surface of stainless steel was aluminized by hot-dip aluminizing process,the influences of dip time and dip temperature on the thicknesses of alloy layer and pure aluminum layer were analyzed to obtain the optimum process parameters,then micro-arc oxidation experiment was carried out.The bonding strength between the oxide film and epoxy resin was measured by the shear method,the microstructure of the micro-arc oxidation film was characterized by using SEM,XRD,and laser confocal microscopy to discuss and analyze the influence of micro-arc oxidation treatment of stainless steel on its adhesion to epoxy resin.The results show that the appropriate hot-dip temperature is 710℃,the appropriate hot-dip time is 11 min.The micro-arc oxidation film is mainly composed ofα-Al2O3 andγ-Al2O3,and the oxidation film products are basically the same under different micro-arc oxidation time.Both the surface roughness of ceramic film and the micro-arc oxidation film-epoxy resin bonding strength increase with the increase of oxidation time.When the time increases to 30 minutes,the maximum surface roughness is 1.265μm,the binding strength increases to the maximum value 33.20 MPa and being 2.8 times that of untreated samples.
作者
赵杰夫
楚珑晟
刘俊
高朋
Zhao Jiefu;Chu Longsheng;Liu Jun;Gao Peng(School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2020年第3期92-97,共6页
Heat Treatment of Metals
基金
国家重点研发计划(2016YFB1200504-A-02)。
关键词
不锈钢
热浸镀铝
微弧氧化
环氧树脂
粘接性能
stainless steel
hot-dip aluminizing
micro-arc oxidation
epoxy resin
bonding properties
