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用热重分析 TGA及扫描电镜 SEM对 Co- 4 0 Cr合金及其表面离子注入 3× 1 0 1 6Y+/cm2和 3× 1 0 1 7Y+/cm2 剂量钇样品 1 0 0 0°C空气中的恒温氧化动力学进行了研究。通过声发射和激光拉曼光谱对氧化膜 /合金界面缺陷以及氧化膜的应力状态进行了研究。结果发现 ,离子注钇在降低合金表面氧化膜生长速率的同时 ,还减少了氧化膜 /合金界面缺陷的数量和大小 ,并极大地降低了氧化膜的内应力 ,使合金表面的 Cr2 O3膜有更好的高温塑性及粘附性 ,提高了合金的抗氧化性能。
Thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) were used to study the effects of ion implantation of 3 × 1016Y + / cm2 and 3 × 1017Y + / cm2 yttrium samples on Co-4 0Cr alloy and its surface in air at 100 ° C The oxidation kinetics at constant temperature was studied. The defects of the oxide film / alloy interface and the stress state of the oxide film were studied by acoustic emission and laser Raman spectroscopy. It was found that the addition of yttrium ion reduced the growth rate of the oxide film on the surface of the alloy and at the same time reduced the number and size of defects at the oxide film / alloy interface and greatly reduced the internal stress of the oxide film so that the Cr 2 O 3 film on the alloy surface Better high temperature plasticity and adhesion, improve the oxidation resistance of the alloy.