基于正交试验法的超音速等离子喷涂钼涂层组织及性能研究

doi:10.3969/j.issn.1000-1093.2016.08.022

兵工学报 ›› 2016, Vol. 37 ›› Issue (8): 1489-1496.doi: 10.3969/j.issn.1000-1093.2016.08.022

基于正交试验法的超音速等离子喷涂钼涂层组织及性能研究

刘贵民¹，杨忠须¹，张一帆²，闫涛¹，魏敏³

（1.装甲兵工程学院装备再制造工程系，北京 100072；2.北京科技大学材料科学与工程学院，北京 100083；3.北京福锐克森热喷涂科技有限公司，北京 102200）

收稿日期:2016-01-06 修回日期:2016-01-06 上线日期:2016-09-30
通讯作者: 刘贵民 E-mail:liuguimin1971 @sina.com
作者简介:刘贵民(1971—)，男，教授，博士生导师
基金资助:
装备再制造技术国防科技重点实验室基金项目（9140C8502010C85）

Research on Microstructure and Properties of Supersonic Plasma Sprayed Mo Coating based on Orthogonal Experiment

LIU Gui-min¹， YANG Zhong-xu¹， ZHANG Yi-fan²， YAN Tao¹， WEI Min³

(1.Department of Equipment Remanufacturing Engineering, Academy of Armoured Forces Engineering, Beijing 100072,China;2.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;3.Beijing Furui Kesen Spraying Technology Co., Ltd., Beijing 102200, China)

Received:2016-01-06 Revised:2016-01-06 Online:2016-09-30
Contact: LIU Gui-min E-mail:liuguimin1971 @sina.com

摘要/Abstract

摘要： 为了探索电磁轨道炮轨道材料45CrNiMoVA钢表面耐磨强化的可能，运用超音速等离子喷涂技术在45CrNiMoVA钢表面制备了钼涂层，结合正交试验法对喷涂参数进行了优化，研究了喷涂参数对涂层性能的影响规律、综合性能最佳时涂层的组织和性能。结果表明：喷涂电压115 V、喷涂电流380 A、氩气流量130 L/min、喷涂距离100 mm时涂层具有最佳综合性能，其导电率为6.01% IACS，表观孔隙率低至0.12%，显微硬度及内聚强度分别高达482.3HV_0.1和52.1 MPa；涂层在轻载荷低频率（5 N、5 Hz）下的磨损率略低于基体，但在重载荷高频率（20 N、20 Hz）下的磨损率仅为基体50%左右，表现出良好的耐磨性能，其磨损机理均为粘着磨损和氧化磨损。

关键词: 兵器科学与技术, 超音速等离子喷涂, 45CrNiMoVA, 钼涂层, 正交试验, 组织, 性能

Abstract: In order to explore the anti-wear reinforcement of the surface of 45CrNiMoVA which acts as rail materials for electromagnetic railgun, Mo coating on 45CrNiMoVA surface was prepared by supersonic plasma spraying technology. The spray parameters are optimized by orthogonal experiment, and the effects of spray parameters on the properties of coating and the structure and properties of the optimal coating are discussed. The research results show that the coating has the best integrative property when spray voltage is 115 V, spray current is 380 A, Ar gas flow rate is 130 L/min, and spray distance is 100 mm. The conductivity, porosity, microhardness and adhesive strength of the optimal Mo coating are 6.01%IACS, 0.12%, 482.3 HV_0.1 and 52.1 MPa , respectively. The wear rate of optimal Mo coating is slightly lower than that of substrate at 5 N load and 5 Hz frequency, while its wear rate is only around half as that of substrate at 20 N load and 20 Hz frequency, and the wear mechanism is adhesive wear and oxidative wear.

Key words: ordnance science and technology, supersonic plasma spraying, 45CrNiMoVA, Mo coating, orthogonal experiment, structure, property

中图分类号:

TG174.442

刘贵民，杨忠须，张一帆，闫涛，魏敏. 基于正交试验法的超音速等离子喷涂钼涂层组织及性能研究[J]. 兵工学报, 2016, 37(8): 1489-1496.

LIU Gui-min， YANG Zhong-xu， ZHANG Yi-fan， YAN Tao， WEI Min. Research on Microstructure and Properties of Supersonic Plasma Sprayed Mo Coating based on Orthogonal Experiment[J]. Acta Armamentarii, 2016, 37(8): 1489-1496.

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基于正交试验法的超音速等离子喷涂钼涂层组织及性能研究

Research on Microstructure and Properties of Supersonic Plasma Sprayed Mo Coating based on Orthogonal Experiment

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