Effects of doping elements on oxidation properties of V–Cr–Ti type alloys in several environments
Effects of doping elements on oxidation properties of V–Cr–Ti type alloys in several environments
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不同环境下掺杂元素对V-Cr-Ti型合金氧化性能的影响
DOI：
10.1016/s0022-3115(02)01101-7
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发表时间：
2002
影响因子：
3.1
通讯作者：
K. Abe
中科院分区：
文献类型：
--
作者：
M. Fujiwara;K. Natesan;M. Satou;A. Hasegawa;K. Abe
本研究检测的合金包括V-4Cr-4Ti - 0.5 si、V-4Cr-4Ti - 0.5 al、V-4Cr-4Ti - 0.5 y和V-4Cr-4Ti。在空气中进行了氧化实验。氧化后，进行拉伸试验、硬度测量和扫描电镜检查。通过x射线衍射（XRD）分析确定了表面氧化层。基于本研究，掺杂Y的合金在600℃和700℃时具有优异的抗氧化性能。XRD分析表明，除V-4Cr-4Ti-0.5Y合金外，其余合金在700℃时均以v2o5为主要氧化相。在所有温度下，V-4Cr-4Ti-0.5Y合金的氧化物均为VO2，在600℃下测试后，其他合金的氧化物均为VO2。结果表明，薄而致密的氧化层的形成是V-4Cr-4Ti-0.5Y合金具有优异氧化性能的重要原因。根据本研究结果，可以通过控制少量钇的添加来进一步优化V-4Cr-4Ti合金。
The alloys examined in this study include V–4Cr–4Ti–0.5Si, V–4Cr–4Ti–0.5Al, V–4Cr–4Ti–0.5Y and V–4Cr–4Ti. Oxidation experiments were conducted in air. After oxidation, tensile tests, hardness measurements and scanning electron microscopy were performed. Surface oxidation layers were identified by X-ray diffraction (XRD) analysis. Based on this study, the alloy doped with Y was excellent in oxidation resistance at 600 and 700 °C. The XRD indicated that V2O5was the primary oxide phase for the alloys tested at 700 °C, except for the V–4Cr–4Ti–0.5Y alloy. The oxide identified at all temperatures in V–4Cr–4Ti–0.5Y alloy was VO2, that was also observed for the other alloys after testing at 600 °C. It was suggested that the formation of thin and dense VO2oxide layers had an important role for superior oxidation properties of the V–4Cr–4Ti–0.5Y alloy. From the results of this study, further optimization of the V–4Cr–4Ti alloy could be possible by controlling the small addition of yttrium.