现有的金属铌和铌基合金制备工艺复杂、成本高、能耗大、污染环境。
The existing pyrometallurgical process to prepare metal niobium is complex, expensive, energy intensive and probably polluting.
综述了铌基合金抗高温氧化性研究的现状，并且对铌基合金抗高温氧化性研究的进展及存在的问题进行了阐述，提出了解决铌基合金抗高温氧化问题的可能途径。
In this paper, the current status of research on Nb-based alloys' resistance to high temperature oxidation is reviewed, including recent advances and existing problems in this area.
铌及铌硅化合物具有优良的力学性能，可替代现有的镍基合金超高温材料。
Niobium and niobium silicides due to their good mechanical properties, have high potential for being the high-temperature materials as a substitute for nickel alloys.
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