The effect of technological parameters of wide-band laser cladding on microstructure and sinterability of gradient bioceramics composite coating.
- Author:
Qibin LIU
1
;
Weidong ZHU
;
Longjiang ZOU
;
Min ZHENG
;
Chuang DONG
Author Information
1. Materials School of Guizhou University, Guiyang 550003, China. qbliu2@263.net
- Publication Type:Journal Article
- MeSH:
Ceramics;
chemistry;
Coated Materials, Biocompatible;
chemistry;
Lasers;
Materials Testing;
Surface Properties;
Titanium;
chemistry;
X-Ray Diffraction
- From:
Journal of Biomedical Engineering
2005;22(6):1193-1196
- CountryChina
- Language:Chinese
-
Abstract:
The gradient bioceramics coating was prepared on the surface of Ti-6Al-4V alloy by using wide-band laser cladding. And the effect of technological parameters of wide-band laser cladding on microstructure and sinterability of gradient bioceramics composite coating was studied. The experimental results indicated that in the circumstances of size of laser doze D and scanning velocity V being fixed, with the increasement of power P, the density of microstructure in bioceramics coating gradually degraded; with the increasement of power P, the pore rate of bioceramics gradually became high. While P = 2.3 KW, the bioceramics coating with dense structure and lower pore rate (5.11%) was obtained; while P = 2.9 KW, the bioceramics coating with disappointing density was formed and its pore rate was up to 21.32%. The microhardness of bioceramics coating demonstrated that while P = 2.3 KW, the largest value of microhardness of bioceramics coating was 1100 HV. Under the condition of our research work, the optimum technological parameters for preparing gradient bioceramics coating by wide-band laser cladding are: P = 2.3 KW, V = 145 mm/min, D = 16 mm x 2 mm.
