Plasma Sprayed HA/ZrO2 Composite Coatings

Abstract

Abstract: HA/ZrO₂ composite coatings on Ti-6Al-4V substrate were successfully deposited via plasma spraying.
The surface morphology, phase composition and bonding strength of coatings were investigated. Simulated body fluid (SBF) tests were carried out to
evaluate the bioactivity of the coatings. The results obtained indicate that the bonding strength of HA/ZrO₂ composite coatings is much higher
than that of HA coating. The bonding strength of HA/ZrO₂ 60 wt% composite coating is even high to 28.5 MPa, which is more than twice
that of HA coating. In SBF test, the coating surface was covered by carbonate-apatite, which indicates that HA/ZrO₂ composite coatings
possess good bioactivity.

Key words: HA, ZrO₂, bonding strength, SBF test, plasma spraying

CLC Number:

O539

ZHENG Xue-Bin,DING Chuan-Xian. Plasma Sprayed HA/ZrO₂ Composite Coatings[J]. Journal of Inorganic Materials.

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Plasma Sprayed HA/ZrO₂ Composite Coatings

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