Effect of HEDP Surface Treatment on the Oxidation Behaviour of Ni3Al
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摘要: 利用高能量密度等離子體(HEDP)對金屬間化合物Ni3Al進行了表面處理,在合金表面獲得了納米級微晶層.該微晶層可以通過增加Al2O3優先形核位置和提高Al的向外擴散促進Ni3Al氧化時形成表面Al2O3,消除了生長速度較快的NiO相.
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關鍵詞:
- 高能量密度等離子體(HEDP) /
- 表面處理 /
- Ni3Al /
- 氧化
Abstract: Surface treatment to the Ni3Al intermetallic compound was conducted by high energy density plasma and nanometer micro-crystalline layers were developed on the alloy surface.Formation of protective Al2O3, scales on the alloy surface was promoted by increasing the nucleaton sites and enhancing the outward ditheion of Al in the micro-crystalline structure. The fast growing phase NiO was eliminated in the oxide scales.-
Key words:
- high energy density plasma /
- surface treatment /
- Ni3Al /
- oxidation
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