RE/Fe multilayer films were prepared by alternate deposition of the two elements onto Si or NaCl single crystal substrates(RE=Dy, Y). The changes in structure of the films were analyzed in situ on the transmission ele...RE/Fe multilayer films were prepared by alternate deposition of the two elements onto Si or NaCl single crystal substrates(RE=Dy, Y). The changes in structure of the films were analyzed in situ on the transmission electron microscope(TEM) hot stage, and were studied by Xray diffraction(XRD) after annealing under vacuum. It was found that, annealing at temperature≤200 ℃ for a long time(～300 min), the amorphous state and the modulated structure of asdeposited films remained basically unchanged. It is suggested that RE/Fe multilayers are stable at temperature up to 200 ℃.〖HS*2]展开更多
研究了含稀土元素的Fe Ni RE粉末的研制工艺及其在粉末冶金制品和热喷涂方面的应用。探讨了稀土元素对Fe Ni RE粉末性能的影响。结果表明 ,加入稀土元素可以获得致密化程度较高、分布均匀的组织 ,明显增加了合金碳化物中铬的含量 ,使碳...研究了含稀土元素的Fe Ni RE粉末的研制工艺及其在粉末冶金制品和热喷涂方面的应用。探讨了稀土元素对Fe Ni RE粉末性能的影响。结果表明 ,加入稀土元素可以获得致密化程度较高、分布均匀的组织 ,明显增加了合金碳化物中铬的含量 ,使碳化物的显微硬度提高 ,从而提高了材料的耐磨性能。展开更多
文摘RE/Fe multilayer films were prepared by alternate deposition of the two elements onto Si or NaCl single crystal substrates(RE=Dy, Y). The changes in structure of the films were analyzed in situ on the transmission electron microscope(TEM) hot stage, and were studied by Xray diffraction(XRD) after annealing under vacuum. It was found that, annealing at temperature≤200 ℃ for a long time(～300 min), the amorphous state and the modulated structure of asdeposited films remained basically unchanged. It is suggested that RE/Fe multilayers are stable at temperature up to 200 ℃.〖HS*2]
