摘要
利用反应等离子喷涂技术在钢基体上沉积了3种不同Mo含量的TiCN-Mo金属基陶瓷涂层。通过XRD、SEM及EDS对涂层显微结构进行分析,通过显微硬度计测量涂层的硬度和压痕韧性,并对显微硬度进行Weibull分布统计。结果表明:涂层由TiC_(0.7)N_(0.3),TiN,金属Mo相,少量Ti_2O及钼的氧化物组成;Mo以白色条带状均匀分布在TiCN周围,交替叠加,形成紧密的显微结构;三种涂层显微硬度均服从Weibull分布,具有一定分散性;与单一TiCN涂层相比,当Mo质量分数为10%时,制备的涂层显微硬度具有较小的分散性,结构致密,具有较高的压痕韧性和强度。
Three types of TiCN-Mo coatings with different Mo contents were deposited on steel substrate surface by reactive plasma spraying.The phase composition and microstructures of as-sprayed coatings were investigated by XRD,SEM and EDS.A Vickers microhardness test was used to measure the microhardness and indentation fractures of the coatings.In addition,a statistics method of Weibull distribution was used to examine the microhardness scattering.The results show that all coatings consist of TiC0.7N0.3,TiN,Mo,minor Ti2O and molybdenum oxides.Metal Mo in white color is evenly distributed around TiCN to form a dense microstructure,which presents an alternately stacked characteristic.The Weibull distribution of the microhardness of three coatings is dominated by apparent scattering.Compared to the monolithic TiCN coatings,the as-sprayed coating with 10%Mo displays a relatively low scattering characteristic of Vickers microhardness and a dense microstructure as well as high indention toughness and strength.
作者
倪攀
牛景辉
刘红兵
张海峰
孟海龙
江德华
龚月
邵林
NI Pan;NIU Jinghui;LIU Hongbing;ZHANG Haifeng;MENG Hailong;JIANG Dehua;GONG Yue;SHAO Lin(Tianjin petroleum vocational and technical college,Tianjin 301607,China;The third oil production plant of Petro China Changqing Oilfield,Wushenqi 017300,China;Exploration and development research institute of Sinopec,Yangzhou 225007,China;East China petroleum technician college,Yangzhou 225129,China)
出处
《粉末冶金材料科学与工程》
EI
北大核心
2018年第2期192-198,共7页
Materials Science and Engineering of Powder Metallurgy
基金
中石油华北油田公司科技项目(2016-HB-G09)
