Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O-2 at various temperatures
文献类型：期刊论文
| 作者 | Song, Z; Tan, DL; He, F; Bao, XH |
| 刊名 | applied surface science
 |
| 出版日期 | 1999 |
| 卷号 | 137期号:1-4页码:142-149 |
| 关键词 | catalysis amorphous Ni-Nb alloy oxidation segregation |
| 英文摘要 | variations of surface morphology and chemical composition of amorphous ni65nb35 alloy after oxidation in 1 atm o-2 at temperatures from room temperature to 773 k have been investigated using scanning electron microscopy (sem), x-ray photoelectron spectroscopy (xps) and auger electron spectroscopy (les) depth profile methods. inverse segregation behaviors have been observed at two oxidation temperature ranges. at the lower temperature range (less than or equal to 373 k), nb segregates at the surface as nb2o5; while at the higher temperature range (greater than or equal to 523 k), ni segregates at the surface as metallic ni and nio. different oxidation mechanisms have been suggested to operate in the two oxidation temperature ranges, which may be concerned with different oxidation rates of nb and diffusion speeds of o and ni ions in the nb,o, layer at different temperatures. the affinities of ni and nb to oxygen may act as the driving force of the segregation. (c) 1999 elsevier science b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; materials science, coatings & films ; physics, applied ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; materials science ; physics |
| 关键词[WOS] | carbon-monoxide ; niobic acid ; zr alloys ; catalysts ; hydrogenation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000077925100019 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138591]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Tianjin Univ, State Key Lab C1 Chem Engn, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Z,Tan, DL,He, F,et al. Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O-2 at various temperatures[J]. applied surface science,1999,137(1-4):142-149. |
| APA | Song, Z,Tan, DL,He, F,&Bao, XH.(1999).Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O-2 at various temperatures.applied surface science,137(1-4),142-149. |
| MLA | Song, Z,et al."Surface segregation behaviors of amorphous Ni65Nb35 alloy under oxidation in O-2 at various temperatures".applied surface science 137.1-4(1999):142-149. |
入库方式： OAI收割
来源：大连化学物理研究所
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