周思华,晁明举,刘奎立,郭艳花.原位生成 WC-B4C 增强镍基激光熔覆层及其性能研究[J].表面技术,2014,43(3):25-30.
ZHOU Si-hu,CHAO Ming-ju,LIU Kui-li,GUO Yan-hua.Research on In-situ Synthesis of WC-B4C Reinforced Ni-based Coatings by Laser Cladding[J].Surface Technology,2014,43(3):25-30 |
| 原位生成 WC-B4C 增强镍基激光熔覆层及其性能研究 |
| Research on In-situ Synthesis of WC-B4C Reinforced Ni-based Coatings by Laser Cladding |
| 投稿时间：2013-12-24 修订日期：2014-01-21 |
| DOI： |
| 中文关键词: 激光熔覆 原位生成 WC-B4C 显微组织 耐磨性 |
| 英文关键词:laser cladding in-situ synthesized WC-B4C microstructure wear resistance |
| 基金项目:国家自然科学基金(51072238) ;河南省科技厅科学研究计划(122300410168) |
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| Author | Institution |
| ZHOU Si-hu | Department of Physics,Engineering Zhengzhou University, Zhengzhou 450052, China;Department of Physics and Electronic Engineering, Zhoukou Normal University, Zhoukou 466001, China |
| CHAO Ming-ju | Department of Physics,Engineering Zhengzhou University, Zhengzhou 450052, China |
| LIU Kui-li | Department of Physics and Electronic Engineering, Zhoukou Normal University, Zhoukou 466001, China |
| GUO Yan-hua | Department of Physics and Electronic Engineering, Zhoukou Normal University, Zhoukou 466001, China |
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| 中文摘要: |
| 目的 通过激光熔覆技术,在 Q235 钢表面原位生成 WC-B4C 增强镍基熔覆层。 方法 以 WO3,B2O3,C 和 Ni60 混合粉末为预涂原料,采用激光熔覆技术原位生成 WC-B4C 增强镍基熔覆层,对熔覆层的显微组织和物相构成进行分析, 研究其摩擦磨损性能。 结果 采用合适的工艺参数, 通过原位生成WC-B4C 形成的增强镍基涂层形貌良好,与基材呈现较好的冶金结合。 熔覆层平均硬度 1200 HV0 . 3 ,摩擦磨损失重仅为纯 Ni60 熔覆层的 1 / 3 。 结论 熔覆层硬度较高,耐磨性很好。 大量原位生成的 WC-B4C增强相及其均匀分布是熔覆层硬度和耐磨性提高的原?? |
| 英文摘要: |
| Objective To in-situ synthesize WC-B4C reinforced Ni-based composite coating on the surface of steel Q235 substrate using laser cladding technique. Methods Using WO3, B2O3, C and Ni60 as pre-coating raw materials, in-situ WC-B4C reinforced Ni-based composite coating was synthesized by laser cladding technology. The microstructure observation, component and phases analysis of the coatings were performed to analyze the friction and wear resistance performance. Results The results indicated that a good finish WC-B4C particulate reinforced composite coating could be achieved by proper laser cladding processes. The coatings epitaxial growing from the substrate with excellent bonding between the coating and substrate was assured by the strong metallurgical interface. The in situ synthesized WC-B4C particulate reinforced Ni-based composite coating had very high hardness of 1200HV0. 3, and excellent wear resistance which was only 1 / 3 that of pure Ni60 coatings. Conclusion The coating layer had improved hardness and wear resistance, which was due to the in-situ synthesis of WC-B4C and its homogenous distribution in the cladding layer. |
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