(1.華南理工大學(xué) 機電工程系， 廣州 510641；
2. 華南理工大學(xué) 材料學(xué)院， 廣州 510641；
3. 華南理工大學(xué) 應(yīng)用物理系， 廣州 510641)
摘 要: 用掃描電子顯微鏡和透射電子顯微鏡對未經(jīng)熱處理的鈦合金基體等離子噴涂羥基磷灰石生物材料的顯微結(jié)構(gòu)、相組成和界面結(jié)合進行了觀察與分析。結(jié)果表明：HA涂層的顯微結(jié)構(gòu)疏松，內(nèi)部有裂紋和孔洞；涂層的相結(jié)構(gòu)中，HA以結(jié)晶態(tài)和非晶態(tài)兩種形態(tài)存在；HA和基體的界面結(jié)合是以物理結(jié)合為主，界面明顯，沒有過渡相，說明基體和涂層之間化學(xué)反應(yīng)不明顯。
關(guān)鍵字: 羥基磷灰石(HA)； 等離子噴涂； 涂層； 界面
of hydroxyapatite biomaterial coating
（1. Department of Electro-Mechanical Engineering, South China University of
Technology,Guangzhou 510641, P.R.China；
2. College of Materials, South China University of
Technology, Guangzhou 510641, P.R.China；
3. Department of Applied Physics, South China University of Technology,
Guangzhou 510641, P.R.China）
Abstract:Microstructure characterization was performed on plasma-spray coated hydroxyapatite and its interface with Ti-6Al-4V using scanning and transmission electron microscopy. The amorphous hydroxyapatite，crystalline hydroxyapatite were found near the coating/substrate interface. No reaction phases were found between the coating and the substrate. This indicates that the interfacial bonding in the as-sprayed sample involves basically mechanical of HA coating to the titanium substrate surface.
Key words: microstructure; interface; hydroxyapatite; Ti-6Al-4V
