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用薄膜X射线衍射、扫描电镜、透射电镜和X光光电子能谱(XPS)技术研究了Co基(Mn、Mo、Fe、Si、B)非晶合金经350～540℃/30～240min氧化处理其表面组织、结构及状态的变化。研究表明,在低于晶化温度Tx70℃左右处理,合金带首先在表面发生晶化和氧化,在其表面形成一层厚度约有0.1μm,组织极其细小、均匀和致密的氧化膜和晶化膜。主要的相组成是MnO_2、MoO_(?)、Mn_5O_6、a-Co固溶体。处理温度升高,晶化和表面氧化加剧,当温度高于Tx时,合金完全晶化。主要的相组成:MnO_2、MoO_3、a-Co固溶体、Co_3B和Co(立方)固溶体。合金带的组织具有明显的各向异性。
The effects of the oxidation of Co (Mn, Mo, Fe, Si, B) amorphous alloy at 350 ~ 540 ℃ for 30 ~ 240min were studied by means of film X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy (XPS) Its surface organization, structure and state changes. The results show that the alloy strip first crystallizes and oxidizes on the surface at a temperature below Tx70 ℃, and forms an oxide film with a thickness of about 0.1μm on the surface and a very fine, uniform and dense microstructure. membrane. The main phase composition is MnO_2, MoO_ (?), Mn_5O_6, a-Co solid solution. As the temperature increases, the crystallization and surface oxidation become worse. When the temperature is higher than Tx, the alloy is completely crystallized. The main phase composition: MnO_2, MoO_3, a-Co solid solution, Co_3B and Co (cubic) solid solution. Alloy band organization has obvious anisotropy.