工艺参数对Ni60-Cu/BaF2·CaF2定向结构涂层组织和性能的影响

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (4): 11-18.

工艺参数对Ni60-Cu/BaF₂·CaF₂定向结构涂层组织和性能的影响

王毅^*1, 殷翔¹, 周凯¹, 王新民¹, 王新华², 任军强²

1.甘肃建投兰州新区建设管理有限公司, 甘肃兰州 730087;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2022-06-10 出版日期:2022-08-28 发布日期:2022-10-09
通讯作者: 王毅(1969-),男,陕西渭南人,高级工程师.Email:916660497@qq.com
基金资助:
甘肃省自然科学基金(20JR5RA471)

Effect of process parameters on microstructure and properties of Ni60-Cu/BaF₂·CaF₂directional structure coating

WANG Yi¹, YIN Xiang¹, ZHOU Kai¹, WANG Xin-min¹ WANG Xin-hua², REN Jun-qiang²

1. Gansu Construction Investment Lanzhou New Area Construction Management Co., Ltd, Lanzhou 730050, China;
2. College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2022-06-10 Online:2022-08-28 Published:2022-10-09

摘要/Abstract

摘要： 采用氧乙炔火焰喷涂+感应重熔+强制冷却相结合的复合技术制备了Ni60-Cu/BaF₂·CaF₂定向结构复合涂层,研究了感应重熔参数对Ni60-Cu/BaF₂·CaF₂定向结构复合涂层组织结构、元素分布、微观硬度的影响.研究表明:过低的感应重熔功率(7 kW)不能提供涂层足够的熔化热,不能保证涂层完全的熔融状态,过高的感应重熔功率(15 kW)导致过高的热输入,使基体元素向涂层过量扩散以及组织粗大,硬度降低.当感应重熔功率为10 kW时,定向结构涂层获得了良好的微观组织,涂层中组织致密且柱状晶明显,涂层与基体间的冶金结合带也较为平整,且涂层的硬度值较高.

关键词: Ni基合金, BaF₂·CaF₂, 定向结构, 微观组织

Abstract: Ni60-Cu/BaF₂·CaF₂ directional structure composite coatings were prepared by a combination of oxyacetylene flame spraying + induction remelting + forced cooling. The effects of induction remelting parameters on the microstructure, element distribution and microhardness of Ni60-Cu/BaF₂·CaF₂ directional structure coatings were studied with a fixed Cu/BaF₂·CaF₂ content. The research shows that the low induction remelting power (7 kW) can not provide enough heat of fusion for the coating, and can not guarantee the complete melting state of the coating,the too high induction remelting power (15 kW) will provide excessive heat input, which will cause excessive diffusion of matrix elements to the coating, coarse microstructure and reduced hardness.When the induction remelting power is 10 kW, the directional structural coating obtains good microstructure,and the structure is dense and the columnar crystal is obvious, the metallurgical bonding zone between the coating and the substrate is relatively smooth, and the hardness value of the coating is higher.

Key words: nickel base alloy, BaF₂·CaF₂, directional structure, microstructure

中图分类号:

TG149

王毅, 殷翔, 周凯, 王新民, 王新华, 任军强. 工艺参数对Ni60-Cu/BaF₂·CaF₂定向结构涂层组织和性能的影响[J]. 兰州理工大学学报, 2022, 48(4): 11-18.

WANG Yi, YIN Xiang, ZHOU Kai, WANG Xin-min WANG Xin-hua, REN Jun-qiang. Effect of process parameters on microstructure and properties of Ni60-Cu/BaF₂·CaF₂directional structure coating[J]. Journal of Lanzhou University of Technology, 2022, 48(4): 11-18.

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工艺参数对Ni60-Cu/BaF₂·CaF₂定向结构涂层组织和性能的影响

Effect of process parameters on microstructure and properties of Ni60-Cu/BaF₂·CaF₂directional structure coating

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