冷喷涂Ti-Ta-金刚石复合涂层的组织和耐腐蚀性能研究

张靖, 周红霞, 李文权

doi:10.16577/j.issn.1001-1560.2025.0021

材料保护 >

2025 , Vol. 58 >Issue 2: 31 - 41

DOI: https://doi.org/10.16577/j.issn.1001-1560.2025.0021

研究论文

冷喷涂Ti-Ta-金刚石复合涂层的组织和耐腐蚀性能研究

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青海大学机械工程学院

周红霞(1983-)，博士，硕士生导师，主要研究方向为冷喷涂涂层及增材制造技术，E-mail: zhouhx＠qhu.edu.cn

收稿日期: 2024-06-18

修回日期: 2024-11-01

录用日期: 2024-11-10

网络出版日期: 2025-03-20

基金资助

青海省应用基础研究项目(2023-ZJ-707)

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Research on the Microstructure and Corrosion Resistance of Cold-Sprayed Ti -Ta-Diamond Composite Coatings

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(School of Mechanical Engineering， Qinghai University， Xining 810016， China)

ZHOU Hongxia(1983-)， Ph.D.， Master Supervisor， Research Focus: Cold Spray Coating and Additive Manufacturing， E-mail: zhouhx＠qhu.edu.cn

Received date: 2024-06-18

Revised date: 2024-11-01

Accepted date: 2024-11-10

Online published: 2025-03-20

Supported by

Qinghai Applied Basic Research(2023-ZJ-707)

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摘要

为提高冷喷涂钛涂层的耐腐蚀性，采用球磨法制备出Ta 质量分数为0、5%、10%和15%的Ti-Ta-10%金刚石复合粉末。通过冷喷涂技术在Ti6Al4V(TC4)基体上沉积复合涂层，采用X 射线衍射(XRD)、扫描电子显微镜(SEM)、金相显微镜(OM)、显微硬度和电化学工作站对冷喷涂Ti-Ta-10%金刚石复合涂层的组织形貌和性能进行分析。结果表明:复合粉末中金刚石对球形Ti 颗粒形成较好包覆，Ta 颗粒弥散分布在涂层中，复合涂层较为致密，孔隙率较低，在球磨和喷涂过程中粉末未发生相变。电化学分析表明:Ta 的加入能够使Ti-Ta-金刚石复合涂层在3.5%NaCl 溶液中的耐腐蚀性能增强，且当Ta 含量为10%时，涂层的耐腐蚀性能最好。

关键词： 冷喷涂; 钛基复合涂层; 钽; 金刚石; 耐腐蚀性能

本文引用格式

张靖, 周红霞, 李文权 . 冷喷涂Ti-Ta-金刚石复合涂层的组织和耐腐蚀性能研究[J]. 材料保护, 2025 , 58(2) : 31 -41 . DOI: 10.16577/j.issn.1001-1560.2025.0021

Abstract

For enhancing the corrosion resistance of cold-sprayed titanium coatings， Ti-Ta-10%diamond composite powders with Ta mass fractions of 0， 5%， 10%， and 15%were prepared by the ball milling method.The composite coatings were deposited onto Ti6Al4V (TC4)substrates through cold spraying technology.Meanwhile， the microstructures and properties of the cold-sprayed Ti-Ta-10%diamond composite coatings were analyzed by means of X-ray diffraction (XRD)， scanning electron microscopy (SEM)， optical microscopy (OM)， microhardness testing， and an electrochemical workstation.Results showed that the diamond in the composite powders effectively coated the spherical Ti particles， and the Ta particles were uniformly dispersed within the coating.The composite coating was dense with a low porosity， and no phase transformation of the powder took place during the ball milling and spraying processed.Electrochemical analysis revealed that the addition of Ta could improve the corrosion resistance of the Ti-Ta-diamond composite coatings in a 3.5%NaCl solution.Moreover， when the Ta content was 10%， the coating exhibited the optimal corrosion resistance.

Key words： cold spraying; titanium-based composite coatings; tantalum; diamond; corrosion resistance

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