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Hot corrosion of modified Ti3Al-based alloy coated with thin Na2SO4 film at 910 and 950 degrees C in air
Qian, Yu-hai; Li, Xi-chao; Li, Mei-shuan; Xu, Jing-jun; Lu, Bin; Qian, YH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2017-04-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume27Issue:4Pages:954-961
AbstractThe hot corrosion behaviour of a modified Ti Al-3-based alloy under thin Na2SO4 deposit film was investigated at 910 and 950 degrees C in air. The corrosion product was identified by XRD and its morphologies on the surface and cross-section were observed by SEM. The alloy suffered from considerable hot corrosion attack. The mass gain versus time curves obtained by TGA exhibited two regions of different kinetics. The whole corroded layer consisted of loose and porous mixture oxides of TiO2, Nb2O5 and Al2O3. Numerous small nodules of corrosion product were observed. An illustrative schematic was established to describe the formation process of such nodules. It seemed that the refractory oxides played a significantly important role in determining the development of hot corrosion attack.; The hot corrosion behaviour of a modified Ti Al-3-based alloy under thin Na2SO4 deposit film was investigated at 910 and 950 degrees C in air. The corrosion product was identified by XRD and its morphologies on the surface and cross-section were observed by SEM. The alloy suffered from considerable hot corrosion attack. The mass gain versus time curves obtained by TGA exhibited two regions of different kinetics. The whole corroded layer consisted of loose and porous mixture oxides of TiO2, Nb2O5 and Al2O3. Numerous small nodules of corrosion product were observed. An illustrative schematic was established to describe the formation process of such nodules. It seemed that the refractory oxides played a significantly important role in determining the development of hot corrosion attack.
description.department[qian, yu-hai ; li, xi-chao ; li, mei-shuan ; xu, jing-jun ; lu, bin] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [li, xi-chao] univ chinese acad sci, beijing 100039, peoples r china
KeywordModified Ti3al-based Intermetallics Hot Corrosion Corrosion Product Nodule Na2so4 Melt
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51271191, 51571205]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78193
Collection中国科学院金属研究所
Corresponding AuthorQian, YH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Qian, Yu-hai,Li, Xi-chao,Li, Mei-shuan,et al. Hot corrosion of modified Ti3Al-based alloy coated with thin Na2SO4 film at 910 and 950 degrees C in air[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2017,27(4):954-961.
APA Qian, Yu-hai,Li, Xi-chao,Li, Mei-shuan,Xu, Jing-jun,Lu, Bin,&Qian, YH .(2017).Hot corrosion of modified Ti3Al-based alloy coated with thin Na2SO4 film at 910 and 950 degrees C in air.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,27(4),954-961.
MLA Qian, Yu-hai,et al."Hot corrosion of modified Ti3Al-based alloy coated with thin Na2SO4 film at 910 and 950 degrees C in air".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 27.4(2017):954-961.
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