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氩弧熔覆Ni基复合涂层的组织结构和长大特性

王永东, 王振廷, 朱艳, 郑光海

王永东, 王振廷, 朱艳, 郑光海. 氩弧熔覆Ni基复合涂层的组织结构和长大特性[J]. 焊接学报, 2015, 36(10): 77-80.
引用本文: 王永东, 王振廷, 朱艳, 郑光海. 氩弧熔覆Ni基复合涂层的组织结构和长大特性[J]. 焊接学报, 2015, 36(10): 77-80.
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WANG Yongdong, WANG Zhenting, ZHU Yan, ZHENG Guanghai. Microstructure and growth characteristic of reinforced Ni-based composite coating by argon arc cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(10): 77-80.
Citation: WANG Yongdong, WANG Zhenting, ZHU Yan, ZHENG Guanghai. Microstructure and growth characteristic of reinforced Ni-based composite coating by argon arc cladding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(10): 77-80.
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氩弧熔覆Ni基复合涂层的组织结构和长大特性

  • 黑龙江科技大学 材料科学与工程学院, 哈尔滨 150022

基金项目: 黑龙江省教育厅骨干教师资助项目(1253G051)

Microstructure and growth characteristic of reinforced Ni-based composite coating by argon arc cladding

  • Heilongjiang University of Science and Technology, Harbin 150022, China

摘要

    摘要
  • 摘要: 以C,Ti,Nb和Ni60A粉为原料,利用氩弧熔覆技术在16Mn钢表面原位合成(Ti,Nb)C增强Ni基复合涂层. 应用扫描电境、透射电镜、X射线衍射仪、显微硬度计对复合涂层的组织结构、(Ti,Nb)C颗粒的生长方式和性能进行了分析. 结果表明,熔覆层与基体呈冶金结合,涂层无裂纹、无气孔等缺陷. 熔覆层组织由(Ti,Nb)C,Cr23C6和γ-Ni组成,原位合成(Ti,Nb)C的生长基元为八面体,连接生长为八面体顶角连接和棱边连接,长大形态为花瓣状和团絮状.
    Abstract: Ni-based composite coating reinforced by (Ti,Nb)C was prepared on the 16Mn steel substrate by means of argon arc cladding technique with the pre-alloyed powder of Ni60A, Nb, Ti and C alloy powders. The growth morphology of the (Ti,Nb)C particles and the microstructure as well as properties of coating were investigated by SEM, TEM, X-Ray, transmission electron microscope and microhardness tester. The results showed that the interface between the coating and substrate had excellent bonding and was free of pores and cracks. The microstructure of cladded coating consisted of (Ti, Nb)C particles, γ-Ni and eutectic structure M23C6. The in-situ synthesized (Ti,Nb)C presented octahedral shape. The connection growth was in the forms of octahedron verte-linked connection and edge-shared connection with form of petal-like shape and flocculation-like shape.
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  • 收稿日期:  2014-06-24

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