摘要
用掺有 10 %(w)CeO2 粉末的及未掺的KF 2 0 1铁基高强度耐磨合金粉末 ,对淬火态 40Cr钢材表面进行喷涂、喷熔和激光涂敷等表面处理 ,考察了用这 3种工艺制作的 6种涂层的显微组织、硬度分布、无润滑磨损和腐蚀磨损。结果表明 ,涂层的磨损抗力和腐蚀磨损抗力都比 40Cr钢基底的大为提高。激光涂敷层的磨损抗力达到淬火态 40Cr钢基底的 5倍以上 ,在 5 %盐水 +石英砂内进行腐蚀磨损试验 ,激光涂敷层的腐蚀磨损抗力达到 40Cr钢基底的 2倍以上。在KF 2 0 1粉末中掺入CeO2 ,Ce能使涂层组织细化 ,涂层磨损抗力与腐蚀磨损抗力得到进一步的提高。
Using KF-201 wear-resistant high strength iron-base alloy powder and mixed powder with 10% CeO 2 powder added in it, surface treatment such as spray coating, spray melting and laser coating is made on surface of 40Cr steel. The microstructure, hardness distribution, non-lubricant wear and corrosion erosion of the coats made with above mentioned processes are investigated. The results show that wear and corrosion erosion resistances of the coatings, specially of the laser coating, are greatly increased compared with 40Cr steel. Wear resistance and corrosion erosion resistance in 5% salt water and quartz sand of laser coating are respectively over five times and two times higher than that of quenched 40Cr steel substrate. The wear and corrosion erosion resistance of the coats made of mixed powder are even better for 10% CeO 2 is help to fine the structure of the coats.
出处
《材料开发与应用》
CAS
2002年第6期30-34,共5页
Development and Application of Materials
