枪管内膛电镀不同镍−钴合金镀层的适配性  

Suitability of different Ni-Co alloy coatings electroplated on inner bore of gun barrel

作　　者：满廷慧 周逸浩 牟延杰 陈越伟 林源 赵洪山 董瀚[1,2] MAN Tinghui;ZHOU Yihao;MOU Yanjie;CHEN Yuewei;LIN Yuan;ZHAO Hongshan;DONG Han(School of Materials and Science Engineering,Shanghai University,Shanghai 200444,China;Zhejiang Institute of Advanced Materials,Shanghai University,Jiashan 314113,China;Nanjing Dachi Technology Group,Nanjing 210014,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海大学(浙江)高端装备基础件材料研究院,浙江嘉善344113 [3]南京大驰科技有限公司,江苏南京210014

出　　处：《电镀与涂饰》2022年第23期1647-1651,共5页Electroplating & Finishing

基　　金：上海市军民融合发展专项资金(2020-jmrh1-kj31)。

摘　　要：以枪管内膛用高强度CrNiMoV钢圆棒为基体,电镀得到3种不同成分的Ni–Co合金镀层(分别标记为N-C1、N-C2和N-C3)。采用压痕法和热震法检测了Ni–Co合金镀层的结合力,以研究其与高强度CrNiMoV钢的适配性。另外,对比了3种Ni–Co合金镀层经不同温度烘烤3 h后的显微硬度,以考察它们在高温环境下的服役能力。结果表明,N-C2和N-C3与基体之间的结合比N-C1更牢固。N-C2和N-C3在300℃和500℃下烘烤3 h后依旧保持较高的显微硬度,说明二者经连续射击后仍具有优异的抗塑性变形能力。Three kinds of Ni–Co alloy coatings with different elemental compositions(coded as N-C1,N-C2,and N-C3)were obtained by electroplating on round rods made of high-strength CrNiMoV steel commonly used to make gun barrels.The adhesion of N-C1,N-C2,and N-C3 coatings to high-strength CrNiMoV steel was tested by indentation and thermal shock to study the suitability between each of the alloy coatings and the substrate.The microhardness of the three kinds Ni–Co alloy coatings baked at different temperatures for 3 h was compared to study their service performance in high temperature environment.The results showed that N-C2 and N-C3 coatings had stronger adhesion to the substrate than N-C1 coating.N-C2 and N-C3 coatings had excellent resistance to plastic deformation even suffering continuous firing as shown by the high microhardness of them after being baked at 300℃ or 500℃ for 3 hours.

关 键 词：高强度合金钢 电镀 镍−钴合金 适配性 高温 显微硬度 

分 类 号：TQ153.2[化学工程—电化学工业]