The effect of nanocrystallization on the oxide formation on Ni-8Cr-3.5Al alloy

2019-11-03 08:40:56

Cr Ni Al Al2O3 oxide

责任者: Chen, G.F.;Lou, H.Y. 单位: Inst. of Corrosion & Protection of Metals, Acad. Sinica, Shenyang, China 来源出处: Journal of Materials Science Letters(J. Mater. Sci. Lett. (USA)),2000/10/15,19(20):1789-91 摘要: Complex oxide scales consisting of a continuous inner layer of Al2O3 were formed on the sputtered Ni-8Cr-3.5Al nanocrystalline coating. However, an external layer of Cr2O3 with an internal oxide of Al was formed on the cast alloy. Due to the formation of a continuous layer of Al2O3, Ni-8Cr-3.5Al nanocrystalline alloy can be Al2O3-former. The Al2O3 forming area consisting of different microstructures for the Ni-Cr-Al nanocrystalline alloys was proposed. It was shown that the Al2O3-forming area was greatly expanded 关键词: aluminium alloys;chromium alloys;grain size;nanostructured materials;nickel alloys;oxidation;sputtered coatings;surface structure;oxidation;oxide formation;nanocrystallization effect;complex oxide scales;continuous inner alumina layer;sputtered nanocrystalline coating;cast alloy;microstructure;alumina-forming area;grain size;AFM;XRD;SEM;EDAX;surface morphology;Ni-Cr-Al