激光熔覆刷式密封高温耐磨复合材料涂层组织研究  

Study on Microstructure of Laser Cladding High Temperature Wear Resistant Composite Coatings for Brush Seal

作　　者：张强[1] 于利根[1] 王华明[1] 

机构地区：[1]北京航空航天大学材料系激光材料加工与表面工程实验室,北京100083

出　　处：《金属热处理》2001年第3期23-25,共3页Heat Treatment of Metals

摘　　要：利用激光熔覆技术制得了以快速凝固M7C3 为耐磨相、以镍基高温合金为基体的刷式密封高温耐磨复合材料涂层。利用OM、SEM、XRD、EDS等分析手段对激光熔覆涂层显微组织进行了分析 ,考察了工艺参数对激光熔覆高温耐磨复合材料涂层显微组织的影响。研究结果表明 ,该涂层与基体为冶金结合 ,结合力强 ,组织致密 ,成分均匀 。High temperature wear resistant composite material coatings for brush applications consisting of rapidly solidified M 7C 3 wear resistant phase and nickel based solid solution were fabricated on substrate of an austenitic stainless steel by laser cladding.Microstructure of the laser cladding composite coatings was characterized as functions of laser processing parameters.Results show that the microstructure of the laser cladding composite coating is uniform and the bonding to the substrate is purely metallurgical.

关 键 词：激光熔覆 高温耐磨 复合材料 镍基合金 刷式密封 燃气涡轮发动机 

分 类 号：V261.933[航空宇航科学与技术—航空宇航制造工程] TG156.99[金属学及工艺—热处理]