| 热处理对牙用Ti-12Zr合金组织与性能的影响 |
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| 引用本文： | 姚生莲,徐国富,李旭,陈蕾.热处理对牙用Ti-12Zr合金组织与性能的影响[J].热加工工艺,2010,39(4). |
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| 作者姓名： | 姚生莲 徐国富 李旭 陈蕾 |
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| 作者单位： | 1. 中南大学,材料科学与工程学院,湖南,长沙,410083;中南大学有色金属材料科学与工程教育部重点实验室,湖南,长沙,410083
2. 中南大学湘雅口腔医学院,湖南,长沙,410008 |
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| 基金项目： | 粉末冶金国家重点实验室开放基金 |
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| 摘 要： | 为了对Ti-12Zr合金在牙科的临床使用提供实验及理论依据,借助维氏硬度测量、电化学性能测试和扫描电子显微镜镜(SEM)的观察及X-射线衍射(XRD)的分析,研究了牙用Ti-12Zr合金经200、400、500、600和800℃加热(氧化)处理后合金的表面维氏硬度、形貌、结构及电化学性能。结果表明:经不同热氧化温度处理的Ti-12Zr合金表面能够生成不同厚度的ZrO2和(Ti,Zr)O2陶瓷层,其硬度比Ti-12Zr合金基材高;在人工唾液环境中,在500℃以下,随热氧化温度的升高,Ti-12Zr合金表面生成的陶瓷层耐腐蚀性能随着温度的升高而增加,500℃时,腐蚀电位Ecorr达到最大值(-18mV),抗腐蚀性能最好,超过500℃时,Ecorr又降低,抗腐蚀性能变差。
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| 关 键 词： | 热处理 Ti-12Zr合金 组织 性能 |
Effect of Heat Treatment on Microstructure and Properties of Ti-12Zr Alloy for Clinical Tooth |
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| YAO Shenglian,XU Guofu,LI Xu,CHEN Le.Effect of Heat Treatment on Microstructure and Properties of Ti-12Zr Alloy for Clinical Tooth[J].Hot Working Technology,2010,39(4). |
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| Authors: | YAO Shenglian XU Guofu LI Xu CHEN Le |
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| Affiliation: | YAO Shenglian1,2,XU Guofu1,LI Xu1,CHEN Lei3 (1.School of Materials Science , Engineering,Central South University,Changsha 410083,China,2.The Key Laboratory of Nonferrous Metal Materials Science , Engineering,Ministry of Education,3.Xiangya School of Stomatology,Changsha 410008,China) |
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| Abstract: | The aim is to provide basis of experiment and theory for Ti-12Zr alloy elincal application. After different temperature(200, 400, 500, 600 and 800 ℃)thermal oxidation, the surface hardness were measured by digital micro-hardness tester, the electrochemical corrosion behavior was investigated in artificial saliva by the analysis of polarization curves and the surface morphologies and microstructure of Ti-12Zr alloy for clinical tooth were investigated by SEM and XRD. The results show that: ZrO_2 and(Ti, Zr)O_2ceramic oxide coating produce after different temperature thermal oxidation accordingly.The micro-hardness is higher than Ti-12Zr alloy matrix. In artificial saliva, the electrochemical corrosion behavior of the ZrO_2 and(Ti, Zr)O_2 ceramic oxide coating improves with the increase of thermal oxidation temperature, below 500 ℃. The electrochemical corrosion behavior is best at 500 ℃, then E_(corr) is -18 mV. The electrochemical corrosion behavior reduces and E_(corr) reduced over 500 ℃. |
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| Keywords: | heat treat Ti-12Zr alloy microstructure properties |
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