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

被引：8

作者：

Liu, Boda ^{[1
]}

Deng, Zixin ^{[1
]}

Liu, Defu ^{[1
,2
]}

机构：

[1] Cent South Univ, Coll Mech & Elect Engn, Changsha 410083, Peoples R China

[2] State Key Lab High Performance Complex Mfg, Changsha 410083, Peoples R China

来源：

COATINGS | 2021年 / 11卷 / 08期

基金：

中国国家自然科学基金;

关键词：

laser cladding; Ca; P bio-ceramic coating; biocompatibility; bioactivity; wear resistance; CALCIUM-PHOSPHATE; HYDROXYAPATITE COATINGS; TITANIUM; TI-6AL-4V; HA; BIOACTIVITY; ALLOYS; VOLUME; TIO2; SBF;

D O I：

10.3390/coatings11080891

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：17

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