真空等离子体喷涂B4C-Mo复合涂层耐磨性能研究

doi:10.15541/jim20150384

无机材料学报 ›› 2016, Vol. 31 ›› Issue (1): 100-106.DOI: 10.15541/jim20150384

真空等离子体喷涂B₄C-Mo复合涂层耐磨性能研究

林初城¹, 孔明光², 朱慧颖³, 黄利平¹, 郑学斌¹, 曾毅⁴

(1. 中国科学院上海硅酸盐研究所, 特种无机涂层重点实验室, 上海200050; 2. 中国科学院上海硅酸盐研究所, 生物材料与组织工程研究中心, 上海200050; 3. 中国科学院固体物理研究所, 合肥 230031; 4. 中国科学院上海硅酸盐研究所, 高性能陶瓷和超微结构国家重点实验室, 上海200050)

收稿日期:2015-08-14 出版日期:2015-10-30 网络出版日期:2015-12-15
作者简介:林初城. E-mail: chucheng@mail.sic.ac.cn

Tribological Behavior of Vacuum Plasma Sprayed B₄C-Mo Composite Coating

LIN Chu-Cheng¹, KONG Ming-Guang², ZHU Hui-Ying³, HUANG Li-Ping¹, ZHENG Xue-Bin¹, ZENG Yi⁴

(1. Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. In atitute of Solid Physics, Chinese Academy of Scienxes, Hefei 230031, China 3. Biomaterials and Tissue Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 4. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2015-08-14 Published:2015-10-30 Online:2015-12-15
About author:LIN Chu-Cheng(1987–), male, engineer. E-mail: chucheng@mail.sic.ac.cn
Supported by:
Foundation items: Open Fund of Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences (KLICM-2012-03);Research Project Fund of International Science & Technology Cooperation Project of China (2013DFG52290);Shanghai Technical Platform for Testing and Characterization on Inorganic Materials (14DZ2292900);CAS Key Technolgy Talent Program

摘要/Abstract

摘要：

采用真空等离子体喷涂技术制备了B₄C-Mo复合涂层, 并对其耐磨性能进行了研究。与B₄C纯涂层相比, 复合涂层结构更为致密, (B, Mo)C过渡相的存在改善了B₄C相与Mo相之间的润湿性, 进而有效提高了涂层的抗摩擦磨损性能。此外, Mo在喷涂过程中形成了大量的纳米晶, 这也在一定程度上促进了复合涂层耐磨性能的提高。

关键词: B4C-Mo复合涂层, 耐磨性能, 真空等离子体喷涂

Abstract:

A B₄C-Mo composite coating was fabricated using a vacuum plasma spray technique, and its wear behavior was compared with that of a pure B₄C coating. The microstructure of the composite coating was much more homogeneous and compact as a result of the formation of a (B, Mo) C transition phase, which effectively improved the interface between B₄C and Mo splats. For this reason, the wear resistance of the composite coating was much superior to that of the pure B₄C coating. The distribution of nano-sized Mo in the composite coating might also contribute to the improved tribological properties.

Key words: B4C-Mo composite coating, tribological behavior, vacuum plasma spray

中图分类号:

TG174

林初城, 孔明光, 朱慧颖, 黄利平, 郑学斌, 曾毅. 真空等离子体喷涂B₄C-Mo复合涂层耐磨性能研究[J]. 无机材料学报, 2016, 31(1): 100-106.

LIN Chu-Cheng, KONG Ming-Guang, ZHU Hui-Ying, HUANG Li-Ping, ZHENG Xue-Bin, ZENG Yi. Tribological Behavior of Vacuum Plasma Sprayed B₄C-Mo Composite Coating[J]. Journal of Inorganic Materials, 2016, 31(1): 100-106.

图/表 9

Table 1 Vacuum plasma spraying parameters

Parameters	B₄C	B₄C-Mo
Current/A	600	600
Ar gas flow/slpm	37	40
H₂ gas flow/slpm	13	10
Powder feed rate/(r·min^-1)	22	20
Spray distance/mm	220	200
Pressure/(×10², Pa)	400	400
Temperature of the stainless steel substrate/K	520-620	520-620

Fig. 1 XRD patterns of as-sprayed coatings

Fig. 2 SEM micrographs of (a, c) B4C coating and (b, d) B4C-Mo composite coating; (a, b) surface morphologies and (c, d) cross-sectional morphologies

Fig. 3 TEM micrographs of (a) columnar grains and (b) interface between B4C and Mo splats in the composite coating

Fig. 4 TEM images showing the different morphologies of the (a) B4C coating and (b-f) B4C-Mo composite coating

Fig. 5 Friction coefficients depending on sliding time of (a) the B4C/WC-Co alloy friction pair and (b) the B4C-Mo/WC-Co alloy friction pair under different loads; (c) comparison of volume wear rates between B4C and B4C-Mo composite coatings under different loads

Fig. 6 SEM images showing the morphologies of worn surfaces after sliding against a WC-Co ball for 1800 s with an applied load of 20 N

Fig. 7 SEM micrographs of wear debris obtained for (a) B4C and (b) B4C-Mo coatings

Fig. 8 Comparison of surface morphologies for the B4C-Mo composite coating (a, b) before and (c, d) after the wear test under an applied load of 50 N; (a, c) SEM micrographs and (b, d) corresponding EDS mapping of Mo

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真空等离子体喷涂B₄C-Mo复合涂层耐磨性能研究

Tribological Behavior of Vacuum Plasma Sprayed B₄C-Mo Composite Coating

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