Premium
Biocompatibility of a functionally graded bioceramic coating made by wide‐band laser cladding
Author(s) -
Weidong Zhu,
Qibin Liu,
Min Zheng,
Xudong Wang
Publication year - 2008
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.31774
Subject(s) - bioceramic , materials science , coating , biocompatibility , brittleness , composite material , titanium alloy , composite number , simulated body fluid , cladding (metalworking) , ceramic , biomedical engineering , alloy , metallurgy , scanning electron microscope , medicine
The application of plasma spray is the most popular method by which a metal‐bioceramic surface composite can be prepared for the repair of biological hard‐tissue, but this method has disadvantages. These disadvantages include poor coating‐to‐substrate adhesion, low mechanical strength, and brittleness of the coating. In the investigation described in this article, a gradient bioceramic coating was prepared on a Ti‐6Al‐4V titanium alloy surface using a gradient composite design and wide‐band laser cladding techniques. Using a trilayer‐structure composed of a substratum, an alloy and bioceramics, the coating was chemically and metallurgically bonded with the substratum. The coating, which contains β‐tricalcium phosphate and hydroxyapatite, showed favorable biocompatibility with the bone tissue and promoted in vivo osteogenesis. © 2008 Wiley Periodicals, Inc. J Biomed Mater Res, 2008