CAJ | 학술논문

采用差示扫描量热分析法(DSC)研究热处理对 Ti?52.2%Ni(摩尔分数)合金相变温度的影响。通过热处理手段可有效调整合金的相变温度。采用优化的溶胶?凝胶工艺在预氧化的TiNi合金表面制备一层致密、稳定的SiO2涂层，膜基结合强度为(65.9±1.5) N。电化学试验结果表明：经表面SiO2涂层改性处理的TiNi合金在模拟体液中具有优异的耐蚀性能。经表面SiO2涂层改性处理和无表面改性TiNi合金样品分别植入豚鼠听泡，通过扫描电镜观察和能谱分析发现TiNi合金表面致密稳定的SiO2涂层能有效阻止镍离子从合金基质中溶出。
채용차시소묘량열분석법(DSC)연구열처리대 Ti?52.2%Ni(마이분수)합금상변온도적영향。통과열처리수단가유효조정합금적상변온도。채용우화적용효?응효공예재예양화적TiNi합금표면제비일층치밀、은정적SiO2도층，막기결합강도위(65.9±1.5) N。전화학시험결과표명：경표면SiO2도층개성처리적TiNi합금재모의체액중구유우이적내식성능。경표면SiO2도층개성처리화무표면개성TiNi합금양품분별식입돈서은포，통과소묘전경관찰화능보분석발현TiNi합금표면치밀은정적SiO2도층능유효조지얼리자종합금기질중용출。
The effect of heat treatment on the transformation temperature of Ti?52.2%Ni (mole fraction) alloy was studied using differential scanning calorimetry (DSC). The transformation temperatures of the alloy can be adjusted effectively by heat treatment. Dense and stable SiO2 coatings were deposited on the surface of the pre-oxidized TiNi alloy by sol?gel method. The bonding strength of films and matrix was (65.9±1.5) N. The electrochemical corrosion test shows that the TiNi alloy with SiO2 coating has excellent corrosion resistance in the Hank’s simulated body fluid. The release behaviors of Ni ion of the alloy with and without SiO2 coating implanted in the acoustic vesicle of guinea pig were studied by EDS testing, which was inhibited effectively by the dense and stable SiO2 coating on the alloy.