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標題Title: Effects of coating fluorapatite on Ti-6Al-4V by Nd-YAG laser cladding
作者Authors: 郭聰源,簡基勝..等
上傳單位Department: 機械工程系
上傳時間Date: 2009-11-26
上傳者Author: 郭聰源
審核單位Department: 機械工程系
審核老師Teacher: 郭聰源
檔案類型Categories: 研討會報告Seminar Report
關鍵詞Keyword: Laser cladding, Hydroxyapatite, Fluorapatite, Ti-6Al-4V
摘要Abstract: Hydroxyapatite (HA) has been commonly applied on the surface of biomedical implants via plasma spraying or pulsed laser deposition method. However, the bonding strength between the coating layer and the substrate generated by these methods is relatively low. The high temperature process also usually causes the structural unstable of HA, and then degrades the bioactivity and survive duration of the coating layer after the following implantation. Fluorapatite (FA) is chosen as the coating material in the study due to its better structural stability and lower solubility. Polyvinyl alcohol (PVA) and sodium silicate (WG) are selected as a binder material to mixed with FA, respectively, and is then clad on Ti-6Al-4V substrates using an Nd-YAG laser beam. Hardness test, microscopy and XRD analysis are utilized to evaluate the bonding quality of the coating layer under different processing parameters. The results show that a metallurgical bonding layer with better quality can be achieved by Nd-YAG laser cladding technique.

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