Effect of Na2O and ZnO on the microstructure and properties of laser cladding derived CaO-SiO2 ceramic coatings on titanium alloys

被引：9

作者：

Li, H. C. ^{[1
,2
]}

Wang, D. G. ^{[1
,2
]}

Hu, C. ^{[1
,2
]}

Dou, J. H. ^{[1
,2
]}

Yu, H. J. ^{[3
,4
]}

Chen, C. Z. ^{[1
,2
]}

机构：

[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China

[2] Shandong Univ, Shandong Engn Res Ctr Superhard Mat, Dept Mat Sci & Engn, Jinan 250061, Peoples R China

[3] Shandong Univ, Key Lab High Efficiency & Clean Mech Manufacture, Minist Educ, Jinan 250061, Peoples R China

[4] Shandong Univ, Natl Demonstrat Ctr Expt Mech Engn Educ, Sch Mech Engn, Jinan 250061, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2021年 / 592卷

关键词：

Laser cladding; Titanium alloy; Wollastonite; Microstructure; Bioactivity; IN-VITRO BIOACTIVITY; WOLLASTONITE COATINGS; HYDROXYAPATITE; SCAFFOLDS; IMPLANTS; DEGRADABILITY; SUBSTRATE; FILMS;

D O I：

10.1016/j.jcis.2021.02.064

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To improve the bioactivity of titanium alloy (Ti-6Al-4V), CaO-SiO2 coatings on titanium alloys were fabricated using laser cladding method. The effect of Na2O and ZnO on the microstructure and properties of the prepared coatings was discussed. The microstructure of the CaO-SiO2 coatings consists of cellular grains and cellular dendrites. The mutual diffusion of elements occurs between the coating and substrate. The base CaO-SiO2 coating is composed of different phases including CaTiO3, alpha-Ca-2(SiO4), SiO2, TiO2 and CaO. The formation of CaTiO3 in the ceramic layer was analyzed through thermodynamics. Na2O has little influence on the microstructure, average hardness and wear resistance. When ZnO is added to the precursor, the microstructure turns to cell dendrite, and ZnO and Zn2SiO4 appear in the corresponding coating. The addition of ZnO reduces the average hardness and wear resistance of the ceramic layer. The in vitro soaking in SBF shows that the laser cladding coating has the ability to form an apatite layer. (C) 2021 Elsevier Inc. All rights reserved.

引用

页码：498 / 508

页数：11

共 50 条

[1]

Ablikim (BESIII Collaboration) M., 2010, NUCL INSTRUM METH A, V614, P345, DOI [DOI 10.1016/J.NIMA.2009.12.050, 10.1016/j.nima.2009.12.050]

[2] A new quantitative method to evaluate the in vitro bioactivity of melt and sol-gel-derived silicate glasses [J].