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用AE技术和SEM研究了离子注入Y+(1×1017Y+/cm2)对Ni30Cr走向凝固合金1000℃形成的氧化膜在冷却过程中的破裂行为的影响结果表明:合金的横向和纵向虽具有不同的显微结构,但表面氧化膜的破裂行为相似.未注Y+合金氧化膜在冷却过程中发生了开裂和剥落,裂纹萌生于合金晶界及膜/合金界面的空洞处,以后扩展至膜内,导致膜发生剥落离子注入Y+显著改善了氧化膜的抗剥落性能.注入Y+明显减少了界面缺陷的数量及减小了缺陷的平均尺寸.
The effects of ion implantation Y + (1 × 10 17 Y + / cm 2) on the rupture behavior of the oxide film formed at 1000 ℃ on the Ni30Cr solidification alloy during cooling were investigated by AE and SEM. The results show that although the transverse and longitudinal directions of the alloy are different, Microstructure, but the surface oxide film rupture behavior similar. During the cooling process, uncracked Y + alloy oxide film was cracked and peeled off. Cracking occurred at the alloy grain boundaries and voids at the film / alloy interface and later extended into the film, causing the film to peel off. Ion implantation of Y + significantly improved the oxidation of the oxide film Anti-spalling properties. Injection of Y + significantly reduces the number of interface defects and reduces the average size of the defects.