Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature

Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature

In this paper, silicon-modified Al powders (SiO2@Al) were prepared by tetraethyl orthosilicate (TEOS) hydrolysis under alkaline conditions. Using SiO2@Al as additives, a new Al2O3-SiO2 ceramic coating (ASMA) was formed on carbon steel to prevent carbon steel from oxidization at 1250 °C for 1...

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Main Authors: Bo Yu, Guoyan Fu, Yanbin Cui, Xiaomeng Zhang, Yubo Tu, Yingchao Du, Gaohong Zuo, Shufeng Ye, Lianqi Wei
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Coatings
Subjects:
ceramic coating
anti-oxidation
SiO2@Al additive
carbon steel
Online Access:http://www.mdpi.com/2079-6412/9/3/167
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spelling doaj-9a73c8d08e304507aad10215e66f58112020-11-25T01:04:22ZengMDPI AGCoatings2079-64122019-03-019316710.3390/coatings9030167coatings9030167Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High TemperatureBo Yu0Guoyan Fu1Yanbin Cui2Xiaomeng Zhang3Yubo Tu4Yingchao Du5Gaohong Zuo6Shufeng Ye7Lianqi Wei8State Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaState Key Laboratory of Multiphase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, PO Box 353, Beijing 100190, ChinaIn this paper, silicon-modified Al powders (SiO2@Al) were prepared by tetraethyl orthosilicate (TEOS) hydrolysis under alkaline conditions. Using SiO2@Al as additives, a new Al2O3-SiO2 ceramic coating (ASMA) was formed on carbon steel to prevent carbon steel from oxidization at 1250 °C for 120 min. Compared with the Al2O3-SiO2 ceramic coating without additive (AS), ASMA showed a remarkably better anti-oxidation performance, especially during the temperature-rise period. According to the characterization conducted by TG-DTA, XRD and SEM-EDS, it was found that the metallic Al in ASMA melted at 660 °C and reacted with SiO2 on its surface, which generated local high temperature and accelerated the sintering of ceramic raw materials. The mullite and hercynite formed in ASMA also played a major role for enhancing the anti-oxidation performance of ceramic coating.http://www.mdpi.com/2079-6412/9/3/167ceramic coatinganti-oxidationSiO2@Al additivecarbon steel
collection DOAJ
language English
format Article
sources DOAJ
author Bo Yu
Guoyan Fu
Yanbin Cui
Xiaomeng Zhang
Yubo Tu
Yingchao Du
Gaohong Zuo
Shufeng Ye
Lianqi Wei
spellingShingle Bo Yu
Guoyan Fu
Yanbin Cui
Xiaomeng Zhang
Yubo Tu
Yingchao Du
Gaohong Zuo
Shufeng Ye
Lianqi Wei
Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
Coatings
ceramic coating
anti-oxidation
SiO2@Al additive
carbon steel
author_facet Bo Yu
Guoyan Fu
Yanbin Cui
Xiaomeng Zhang
Yubo Tu
Yingchao Du
Gaohong Zuo
Shufeng Ye
Lianqi Wei
author_sort Bo Yu
title Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
title_short Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
title_full Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
title_fullStr Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
title_full_unstemmed Influence of Silicon-Modified Al Powders (SiO2@Al) on Anti-oxidation Performance of Al2O3-SiO2 Ceramic Coating for Carbon Steel at High Temperature
title_sort influence of silicon-modified al powders (sio2@al) on anti-oxidation performance of al2o3-sio2 ceramic coating for carbon steel at high temperature
publisher MDPI AG
series Coatings
issn 2079-6412
publishDate 2019-03-01
description In this paper, silicon-modified Al powders (SiO2@Al) were prepared by tetraethyl orthosilicate (TEOS) hydrolysis under alkaline conditions. Using SiO2@Al as additives, a new Al2O3-SiO2 ceramic coating (ASMA) was formed on carbon steel to prevent carbon steel from oxidization at 1250 °C for 120 min. Compared with the Al2O3-SiO2 ceramic coating without additive (AS), ASMA showed a remarkably better anti-oxidation performance, especially during the temperature-rise period. According to the characterization conducted by TG-DTA, XRD and SEM-EDS, it was found that the metallic Al in ASMA melted at 660 °C and reacted with SiO2 on its surface, which generated local high temperature and accelerated the sintering of ceramic raw materials. The mullite and hercynite formed in ASMA also played a major role for enhancing the anti-oxidation performance of ceramic coating.
topic ceramic coating
anti-oxidation
SiO2@Al additive
carbon steel
url http://www.mdpi.com/2079-6412/9/3/167
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