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Isothermal Oxidation Behavior of Single-Crystal Nickel-Base Superalloy DD10
Liu Chengbao; Li Hui; Lou Langhong
Corresponding AuthorLiu Chengbao(cbliu@imr.ac.cn)
2010-08-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume39Issue:8Pages:1407-1410
AbstractThe isothermal oxidation behaviors of two kinds of single-crystal nickel-base superalloys DD10 with different cobalt contents were investigated at 900, 1000 and 1100 degrees C in air by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy disperse X-ray analysis (EDX). It is found that increasing the cobalt content can decrease the diffusion activity energy of the alloy and thus increase the oxidation rate slightly. For the oxidation at 900 degrees C and 1000 degrees C, the mass gain basically obeys the parabola law. The oxide scales consist of three layers: an outer layer of Cr(2)O(3) and TiO(2), a thin intermediate layer of CrTaO(4) and Ta(2)O(5), and a continuous inner layer of Al(2)O(3). For the oxidation at 1100 degrees C, because of the severe spalling of the scale and the volatilization of the CrO(3), the kinetics curves deviate from the parabolic law a little. Some spinels such as NiCr(2)O(4), CoAl(2)O(4), CoNiO(2) and Co(2)TiO(4) form and inner nitridation phenomenon happens.
Keywordnickel base superalloyDD10 single crystal oxidation
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000281904000019
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/101418
Collection中国科学院金属研究所
Corresponding AuthorLiu Chengbao
AffiliationChinese Acad Sci, Superalloys Div, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Liu Chengbao,Li Hui,Lou Langhong. Isothermal Oxidation Behavior of Single-Crystal Nickel-Base Superalloy DD10[J]. RARE METAL MATERIALS AND ENGINEERING,2010,39(8):1407-1410.
APA Liu Chengbao,Li Hui,&Lou Langhong.(2010).Isothermal Oxidation Behavior of Single-Crystal Nickel-Base Superalloy DD10.RARE METAL MATERIALS AND ENGINEERING,39(8),1407-1410.
MLA Liu Chengbao,et al."Isothermal Oxidation Behavior of Single-Crystal Nickel-Base Superalloy DD10".RARE METAL MATERIALS AND ENGINEERING 39.8(2010):1407-1410.
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