熱處理對新型牙科植體合金之特性影響

Effects of heat treatment on the properties of the novel dental implant alloy

李世琦(Shi-Chi Lee)

指導教授 ： 吳慶榕

臺北醫學大學/口腔醫學院/醫療器材產業碩士專班/碩士(2014年)

摘要

本研究主要藉由電子顯微鏡、X光繞射儀、硬度測試、接觸角測試與細胞毒性檢測等分析，針對熱處理對新型牙科Ti-5Ge植體合金之特性影響進行研究分析。分析研究結果顯示；晶粒大小隨熱處理溫度增加而變大，合金被熱處理於900°C與1000°C持溫30分鐘後會形成針狀組織結構。合金被熱處理於700°C與800°C持溫30分鐘後為?捖甈蛣硎c，當合金被熱處理於900°C與1000°C持溫30分鐘後為會形成(?? + ?恁?)結構。因此，Ti-5Ge合金經700°C至1000°C之熱處理後可發現一?? → (?? + ?恁?)之相變化過程。硬度隨熱處理溫度增加而變大，合金被熱處理於900°C與1000°C後呈現相對親水性表面。細胞毒性檢測亦證明熱處理後之Ti-5Ge合金具有良好之生物相容性，故此Ti-5Ge合金可發展成一潛力之牙科用生醫材料。

關鍵字

Ti-Ge合金 ； 顯微結構 ； 植體 ； 熱處理 ； 生物相容性

並列摘要

The effects of heat treatment on the properties of the novel Ti-5Ge dental implant alloy were investigated by electron microscopy, X-Ray diffraction, hardness test, contact angle test and cell cytotoxicity assay. The analytical results indicated that the grain size of the samples increased with increasing the heat treatment temperature. The needle-like structures were formed in that of sample was heat treated at 900°C and 1000°C for 30 min. The microstructure of the alloy heat treated at 700°C and 800°C for 30 min was single ?? phase. When the temperature was increased to 900°C and 1000°C, the macrostructure of the investigated alloy was essentially a (?? + ?恁?) phase structure. Therefore, as the investigated alloy underwent heat treatment at temperatures between 700°C and 1000°C, the phase transformation sequence was found to be ?? → (?? + ?恁?). The hardness of the samples increased with increasing the heat treatment temperature to 900°C and 1000°C. As the alloy heat treated at 900°C and 1000°C, they exhibit a relatively hydrophilicity surfaces. Cell cytotoxicity assay also demonstrated that the heat treated Ti-5Ge samples possessed the well biocompatibility. Thus, the Ti-5Ge alloy can be developed as potential biomaterial for dental applications.

並列關鍵字

Ti-Ge alloy ； Microstructure ； Implant ； Heat treatment ； Biocompatibility

參考文獻

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