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

ZHANG Jing, ZHOU Hongxia, LI Wenquan

doi:10.16577/j.issn.1001-1560.2025.0021

Materials Protection >

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

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

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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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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ZHANG Jing, ZHOU Hongxia, LI Wenquan . Research on the Microstructure and Corrosion Resistance of Cold-Sprayed Ti -Ta-Diamond Composite Coatings[J]. Materials Protection, 2025 , 58(2) : 31 -41 . DOI: 10.16577/j.issn.1001-1560.2025.0021

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