选取TA2纯钛为研究对象，在箱式电阻炉中进行不同温度与不同时间的热氧化处理，研究了不同工艺热氧化处理试样在36％～38％HCl（室温）和30％H2O2（36.5℃）中的耐腐蚀性。采用扫描电子显微镜（SEM）观察了热氧化处理试样表面形貌， XRD进行了物相分析，用电子天平称重。研究结果表明， TA2纯钛在600℃以上热氧化处理在其表面形成了比原始态更厚的金红石型TiO2氧化膜，且TiO2氧化膜随热氧化温度升高而加厚；热氧化后TA2试样在36％～38％HCl和30％H2 O2中耐腐蚀性明显改善，改善TA2耐蚀性的最佳热氧化工艺条件为：热氧化温度700℃；热氧化时间330～500 min。%Commercially pure titanium ( CP-Ti) TA2 samples were subjected to thermal oxidation ( TO) treatment at different temperature .The morphological feature , structural characteristics and weight of thermally oxidized samples were studied by scanning electron microscope (SEM), X-ray diffraction(XRD) and electronic balance.The corrosion resistance of thermally oxidized samples in 36%~38% HCl ( room temperature ) and 30% H2 O2 ( 36.5 ℃) were investigated .The results show that , when the TO temperature is above 600 ℃, the oxidized layer is composed of TiO2 , and the thickness of TiO 2 oxidized layer increases with the temperature increased .And the corrosion resistance in HCl and H 2 O2 increases significantly after TO treatment , and the optimum TO condition is treating temperature of 700 ℃and duration of 330~500 min.
展开▼
