EFFECTS OF CR+ ION-IMPLANTATION ON THE OXIDATION OF NI3AL

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	EFFECTS OF CR+ ION-IMPLANTATION ON THE OXIDATION OF NI3AL
	M. Chen; S. Patu; J. N. Shen; C. X. Shi
	1993
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	8 期号:4 页码:734-740
摘要	Ni3Al samples were implanted with different doses of 150 keV Cr+ ions to modify the surface region. The high temperature oxidation behavior was tested. The surface layer structure was investigated by AES, TEM, XRD, and optical microscope before and after the test. The experimental results show that chromium ions turn a small amount of ordered superlattice Ni3Al phase into a disordered Ni-Al-Cr phase. Also there is a bcc chromium phase in the implanted sample. Implanted Ni3Al alloy has better oxidation resistance than the unimplanted one at 900-degrees-C. The oxide layer is of a multilayer structure after 50 h oxidation, composed of a NiO inner layer, Cr2O3, spinel NiAl2O4 intermediate layers, and an alpha-Al2O3 external layer at the oxide/air interface. The alpha-Al2O3 and Cr2O3 are independent scale-like layers. The two protective layers improve the oxidation resistance significantly. The effects of implanted elements and possible reaction mechanisms are discussed.
部门归属	acad sinica,inst corros & protect met,shenyang 1100115,peoples r china.;chen, m (reprint author), acad sinica,inst met res,fatigue & fracture mat lab,shenyang 110015,peoples r china
关键词	Degrees c Alloys
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38998
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Chen,S. Patu,J. N. Shen,et al. EFFECTS OF CR+ ION-IMPLANTATION ON THE OXIDATION OF NI3AL[J]. Journal of Materials Research,1993,8(4):734-740.
APA	M. Chen,S. Patu,J. N. Shen,&C. X. Shi.(1993).EFFECTS OF CR+ ION-IMPLANTATION ON THE OXIDATION OF NI3AL.Journal of Materials Research,8(4),734-740.
MLA	M. Chen,et al."EFFECTS OF CR+ ION-IMPLANTATION ON THE OXIDATION OF NI3AL".Journal of Materials Research 8.4(1993):734-740.