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LPCVD-based SiO2/SiC multi-layers coating on graphite for improved antioxidation at wide-ranged temperatures

Li, Yang and Liang, Wu and Shi, Yuan and Zhou, Wei (2018) LPCVD-based SiO2/SiC multi-layers coating on graphite for improved antioxidation at wide-ranged temperatures. Composites Part B Engineering, 146, pp. 155-164. Elsevier. DOI: 10.1016/j.compositesb.2018.03.035 ISSN 1359-8368

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Abstract

A novel SiO2/SiC multilayer coating was prepared on graphite by low-pressure chemical vapor Deposition (LPCVD) with the aim of enhancing oxidation resistance at wide-ranged elevated temperatures. The anti-oxidation tests were performed at 1000 °C and 1500 °C in ambient air. The results showed that oxidation of SiO2/SiC multilayer coating was a continuous weight gain process, compared to the fast weight-loss of single SiC coated specimens. The final weight gains of SiO2/SiC coated specimens after oxidation at 1000 °C and 1500 °C for 120 h in ambient air are 0.116 mg/cm2 and 0.225 mg/cm2, respectively. The superior anti-oxidation performance of SiO2/SiC multilayer coating is ascribed to the intact combination between layers and excellent self-healing ability of SiO2 at elevated temperature.

Item URL in elib:https://elib.dlr.de/120350/
Document Type:Article
Title:LPCVD-based SiO2/SiC multi-layers coating on graphite for improved antioxidation at wide-ranged temperatures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Li, YangState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR ChinaUNSPECIFIED
Liang, WuState Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, PR ChinaUNSPECIFIED
Shi, Yuanyuan.shi (at) dlr.deUNSPECIFIED
Zhou, WeiCollege of Metallurgy and Materials Engineering, Hunan University of Technology, Zhuzhou, 412008, PR ChinaUNSPECIFIED
Date:2018
Journal or Publication Title:Composites Part B Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:146
DOI :10.1016/j.compositesb.2018.03.035
Page Range:pp. 155-164
Publisher:Elsevier
ISSN:1359-8368
Status:Published
Keywords:SiO2 coating, CVD, SiC coating, Oxidation resistance
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Ceramic Composite Structures
Deposited By: Shi, Yuan
Deposited On:03 Jul 2018 10:20
Last Modified:06 Sep 2019 15:24

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