Tribological properties of HVOF sprayed WC-10Ni coating in corrosive environments

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-07-24 DOI:10.1016/j.wear.2025.206273

Zongxiao Zhu , Haida Ren , Kongjie Jin , Yushan Geng , Hui Tan , Wenyuan Chen , Juanjuan Chen , Jun Yang

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引用次数: 0

Abstract

WC-Ni coating possesses superior wear and corrosion resistance and it can be widely used on the surface of pump shafts in the petrochemical field, crusher hammers and liners in mining machinery to prevent the base metal from being damaged. In this study, microstructure, mechanical properties of HVOF sprayed WC-10Ni coating and its systematically properties of friction and wear under different combinations of counterparts and test environments were examined. The primary phase of the coating was WC, accompanied by only traces of W₂C and NiO. The coating had a porosity as low as 0.74 %, the surface hardness of approximately 1264 HV_0.3, and the bonding strength as high as 68 MPa between coating and substrate. WC-10Ni coating/ceramic tribo-pairs exhibited lower friction coefficients in corrosive environments than in dry condition. WC-10Ni/Al₂O₃ and WC-10Ni/SiC tribo-pairs showed friction coefficients below 0.15 in NaOH and HCl environments, while the wear rates of WC-10Ni coating after sliding against Al₂O₃ was (3.36–11.9) × 10⁻⁸ mm³/N·m. On the whole, WC-10Ni/SiC tribo-pair possessed excellent tribological properties in NaOH environment, while WC-10Ni/Al₂O₃ tribo-pair was more suitable for applicating in NaCl and HCl tribo-corrosive environments.

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HVOF喷涂WC-10Ni涂层在腐蚀环境中的摩擦学性能

WC-Ni涂层具有优异的耐磨损和耐腐蚀性能，可广泛应用于石油化工领域的泵轴、破碎机锤头和矿山机械衬套表面，防止母材被破坏。本研究对HVOF喷涂WC-10Ni涂层在不同对应物组合和测试环境下的显微组织、力学性能以及摩擦磨损性能进行了系统的研究。涂层的初级相为WC，仅伴有微量的W2C和NiO。涂层孔隙率低至0.74%，表面硬度约为1264 HV0.3，涂层与基体的结合强度高达68 MPa。WC-10Ni涂层/陶瓷摩擦副在腐蚀环境下的摩擦系数低于干燥环境。WC-10Ni/Al2O3和WC-10Ni/SiC摩擦对在NaOH和HCl环境下的摩擦系数均小于0.15，WC-10Ni涂层与Al2O3摩擦后的磨损率为（3.36-11.9）× 10−8 mm3/N·m。总体而言，WC-10Ni/SiC摩擦对在NaOH环境中具有优异的摩擦学性能，而WC-10Ni/Al2O3摩擦对更适合在NaCl和HCl摩擦腐蚀环境中应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.