镍包WC增强镍铬基合金涂层的组织性能研究

潘晓磊, 肖峰, 郭岩, 汤扣军, 王晶, 蔡龙海, 王光乐, 熊宗群

doi:10.16577/j.issn.1001-1560.2025.0030

材料保护 >

2025 , Vol. 58 >Issue 2: 117 - 122

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0030

研究论文

镍包WC增强镍铬基合金涂层的组织性能研究

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¹上海华电奉贤热电有限公司； ²华电电力科学研究院有限公司

郭岩(1977-)，正高级工程师，主要从事金属材料与表面防护技术开发与研究，电话:13136161270，E-mail:gy197704＠163.com

收稿日期: 2024-10-22

修回日期: 2024-11-12

录用日期: 2024-11-15

网络出版日期: 2025-03-21

基金资助

中国华电集团科技项目(CHDKJ24-04-02-57)

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Study on the Microstructure and Properties of Nickel-Coated WC Reinforced Nickel-Chromium-Based Alloy Coatings

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(1.Shanghai Huadian Fengxian Thermal Power Co.， Ltd.， Shanghai 201499， China；2.Huadian Electric Power Research Institute Co.， Ltd.， Hangzhou 310030， China)

GUO Yan(1977-)， Senior Engineer，Research Focus: Development and Research of Metal Materials and Surface Protection Technology， Tel.: 13136161270，E-mail: gy197704＠163.com

Received date: 2024-10-22

Revised date: 2024-11-12

Accepted date: 2024-11-15

Online published: 2025-03-21

Supported by

China Huadian Corporation Technology Projects(CHDKJ24-04-02-57)

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摘要

为提高0Cr17Ni4Cu4Nb 钢的表面显微硬度、冲击性能和耐水蚀性能，以镍铬基合金粉末和镍包WC 粉的混合物为原料，采用激光熔覆技术在0Cr17Ni4Cu4Nb 钢表面制备含镍包WC 镍铬基合金涂层，研究不同激光功率对涂层的显微组织、物相组成、显微硬度、冲击性能和水蚀性能的影响。结果表明:镍包WC 增强涂层的组织致密，物相为NiCr 固溶体、Cr23C6、Fe3W3C、Fe6W6C 和WC；随着激光功率的增大，涂层组织细化，显微硬度、冲击吸收能量和耐水蚀性能同步提高；当激光功率为1 500 W 时，涂层组织细化最明显，显示出高硬度、高韧性和耐水蚀性能，涂层硬度达801 HV0.3、冲击吸收能量为60.2 J、水蚀失重质量0.106 g，表明在1 500 W 下制备的涂层的综合性能优于其他涂层和基材。

关键词： 激光熔覆; 镍铬基合金涂层; 镍包WC 粉; 物相组成; 显微硬度; 冲击吸收能量; 水蚀

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潘晓磊, 肖峰, 郭岩, 汤扣军, 王晶, 蔡龙海, 王光乐, 熊宗群 . 镍包WC增强镍铬基合金涂层的组织性能研究[J]. 材料保护, 2025 , 58(2) : 117 -122 . DOI: 10.16577/j.issn.1001-1560.2025.0030

Abstract

In order to improve the microhardness， impact performance， and water erosion resistance of 0Cr17Ni4Cu4Nb steel， a nickelchromium-based alloy coating containing nickel-coated WC was prepared on 0Cr17Ni4Cu4Nb steel surface using laser cladding technology.A mixture of nickel-chromium-based alloy powder and nickel-coated WC powder was used as the material.The effects of different laser powers on the microstructure， phase composition， microhardness， impact performance and water erosion resistance of the coating were investigated.Results showed that the microstructure of the nickel-coated WC reinforced coating was dense， and the phases included NiCr solid solution，Cr23C6， Fe3W3C， Fe6W6C， and WC.As the laser power increased， the coating's microstructure was refined， and the microhardness， impact absorbed energy， and water erosion resistance were enhanced simultaneously.When the laser power was 1 500 W， the microstructure refinement was most pronounced， showing high hardness， toughness， and water erosion resistance.The coating achieved a hardness of 801 HV0.3，impact absorbed energy of 60.2 J， and a weight loss due to water erosion of 0.106 g.These results demonstrated that the coating prepared at 1 500 W exhibited superior overall performance compared to other coatings and the substrate.

Key words： laser cladding; nickel-chromium-based alloy coating; nickel-coated WC powder; phase composition; microhardness; impact absorbed energy; water erosion

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