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Article

Preparation and Properties of Multilayer Ca/P Bio-Ceramic Coating by Laser Cladding

by 1, 1 and 1,2,*
1
College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2
State Key Laboratory of High Performance Complex Manufacturing, Changsha 410083, China
*
Author to whom correspondence should be addressed.
Coatings 2021, 11(8), 891; https://doi.org/10.3390/coatings11080891
Received: 29 June 2021 / Revised: 19 July 2021 / Accepted: 23 July 2021 / Published: 26 July 2021
(This article belongs to the Special Issue Surface Modification Technology of Biomedical Metals)
In order to enhance the bioactivity and wear resistance of titanium (Ti) and its alloy for use as an implant surface, a multilayer Ca/P (calcium/phosphorus) bio-ceramic coating on a Ti6Al4V alloy surface was designed and prepared by a laser cladding technique, using the mixture of hydroxyapatite (HA) powder and Ti powder as a cladding precursor. The main cladding process parameters were 400 W laser power, 3 mm/s scanning speed, 2 mm spot diameter and 30% lapping rate. When the Ca/P ceramic coating was immersed in simulated body fluid (SBF), ion exchange occurred between the coating and the immersion solution, and hydroxyapatite (HA) was induced and deposited on its surface, which indicated that the Ca/P bio-ceramic coating had good bioactivity. The volume wear of Ca/P ceramic coating was reduced by 43.2% compared with that of Ti6Al4V alloy by the pin-disc wear test, which indicated that the Ca/P bio-ceramic coating had better wear resistance. View Full-Text
Keywords: laser cladding; Ca/P bio-ceramic coating; biocompatibility; bioactivity; wear resistance laser cladding; Ca/P bio-ceramic coating; biocompatibility; bioactivity; wear resistance
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MDPI and ACS Style

Liu, B.; Deng, Z.; Liu, D. Preparation and Properties of Multilayer Ca/P Bio-Ceramic Coating by Laser Cladding. Coatings 2021, 11, 891. https://doi.org/10.3390/coatings11080891

AMA Style

Liu B, Deng Z, Liu D. Preparation and Properties of Multilayer Ca/P Bio-Ceramic Coating by Laser Cladding. Coatings. 2021; 11(8):891. https://doi.org/10.3390/coatings11080891

Chicago/Turabian Style

Liu, Boda, Zixin Deng, and Defu Liu. 2021. "Preparation and Properties of Multilayer Ca/P Bio-Ceramic Coating by Laser Cladding" Coatings 11, no. 8: 891. https://doi.org/10.3390/coatings11080891

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