【摘要】 借助热氧化技术对TC4合金进行表面处理,以提高其表面性能。借助扫描电镜,辉光放电光谱分析仪,X射线衍射仪和X射线光电子能谱分析热氧化TC4合金的特征,采用电化学测试技术研究了热氧层和TC4合金基材在CO2饱和模拟油田采出液中的电化学腐蚀行为。结果表明:热氧化处理后,TC4合金表面生成连续、均匀的热氧化层,主要由金红石相组成。热氧化处理显著提高了TC4合金在模拟油田采出液中的耐腐蚀性能。更多还原

【Abstract】 Thermal oxidation（TO）process was conducted to realize surface treatment of TC4 alloy.Scanning electron microscope（SEM）,glow discharge optical emission spectrometer（GDOES）,X-ray diffraction（XRD）and X-ray photoelectron spectroscopy（XPS）were employed to analyze the characterizations of the obtained TO layer.Electrochemical corrosion behavior of the TO layer and TC4 alloy substrate in CO₂-saturated simulated oilfield medium was investigated.The results show that the continuous and uniform TO layer is mainly composed of rutile Ti O₂ phase.TO treatment has significantly improved the anticorrosion property of TC4 alloy.更多还原