Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application
Zhou, Zheng1; Han, Feng-Xi1; Yao, Hai-Hua3; Li, Yan-Ze1; Yang, Yan-Ge2; Guo, Xing-Ye1; Tan, Zhen1; Xue, Yun-Fei3; He, Ding-Yong1; Wang, Lu3
Corresponding AuthorYao, Hai-Hua(
AbstractTo improve thermal barrier applications in advanced vehicle engines, a novel Fe-based amorphous composite coating was designed by introducing ceramic oxides and was prepared by atmospheric plasma spraying (APS). The microstructure and related properties of the as-deposited coating were investigated in detail. The composite coating comprises a well-formed FeCrNbBSi amorphous metallic matrix and dispersed yttria-stabilized zirconia (YSZ) splats. A unique Si-oxide interfacial layer with a thickness of several nanometers and an amorphous structure forms between the metallic matrix and ceramic phase, which is attributed to a combination of multiple effects. The composite coating displays extremely low thermal conductivity from 2.28 W/mK at 100 degrees C to 3.36 W/mK at 600 degrees C and can increase the surface temperature of the piston crown by 18.93 degrees C, which implies a significant means of enhancing the power efficiency. The improved thermal barrier ability of the composite coating is revealed as the crucial effect of the Si-oxide interfacial layer, which induces an increased interfacial thermal resistance. The fracture toughness of the composite coating remains at 3.40 MPa.m(1/2), comparable to that of the monolithic amorphous coating, 3.74 MPa.m(1/2), which is closely related to the formation of a Si-oxide layer and its nanoscale thickness. Therefore, the Fe-based amorphous composite coating developed here demonstrates great potential as an innovative metal-based thermal barrier coating for application in vehicle engines and provides specific inspiration for future works exploring the interfacial engineering of coating.
KeywordFe-based amorphous alloy composite coating interfacial layer thermal conductivity fracture toughness
Funding OrganizationNational Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Beijing Natural Science Foundation ; National Key R&D Program of China
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[51771005] ; National Natural Science Foundation of China[52001025] ; China Postdoctoral Science Foundation[2018M641211] ; Beijing Natural Science Foundation[2194067] ; National Key R&D Program of China[2017YFB0306100]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000655027500095
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorYao, Hai-Hua
Affiliation1.Beijing Univ Technol, Fac Mat & Mfg, Beijing 100124, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
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Zhou, Zheng,Han, Feng-Xi,Yao, Hai-Hua,et al. Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(19):23057-23066.
APA Zhou, Zheng.,Han, Feng-Xi.,Yao, Hai-Hua.,Li, Yan-Ze.,Yang, Yan-Ge.,...&Wang, Lu.(2021).Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application.ACS APPLIED MATERIALS & INTERFACES,13(19),23057-23066.
MLA Zhou, Zheng,et al."Novel Fe-Based Amorphous Composite Coating with a Unique Interfacial Layer Improving Thermal Barrier Application".ACS APPLIED MATERIALS & INTERFACES 13.19(2021):23057-23066.
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