热氧化TC4合金在模拟油田介质中的冲蚀磨损行为

Erosive Wear Behavior of Thermal Oxidized TC4 Alloy in Simulated Oilfield Medium

摘要:

采用热氧化技术对TC4合金进行表面处理，使用扫描电镜，能谱仪，光学显微镜，辉光光谱分析仪和X射线衍射仪分析热氧化层的特征，研究了热氧化TC4合金在模拟油田介质中的冲蚀磨损行为。结果表明：热氧化层主要由金红石相组成，热氧化层具有更高的表面硬度，更低的冲蚀磨损失重。热氧化处理显著提高了TC4合金在模拟油田介质中的抗冲蚀磨损性能。

Abstract:

Thermal oxidation (TO) process was applied to treat TC4 alloy. Microstructural characteristics of the TO layer were analyzed using scanning electron microscope (SEM), energy dispersive spectrometer (EDS), optical microscope (OM), glow discharge optical emission spectrometer analysis (GDOES) and X-ray diffraction (XRD). Erosive wear behaviors of the TO treated TC4 alloy in CO2-saturated simulated oilfield medium were investigated. The results showed that the obtained TO layer was mainly composed of rutile TiO2 phase. The TO layer presented higher surface hardness and lower mass loss values. TO treatment had significantly improve the resistance to erosive wear of TC4 alloy.