Improving hot corrosion resistance of Cr3C2-20NiCr coatings with CNT reinforcements
Carbon Nanotubes (CNT) reinforced Cr 3 C 2 -20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal spraying method. The comparative effects of variation in CNT content (from 1 to 2 weight percentage) on mechanical properties and hot corrosion...
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Published in | Surface engineering Vol. 36; no. 11; pp. 1200 - 1209 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
London, England
Taylor & Francis
01.11.2020
SAGE Publications |
Subjects | |
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Abstract | Carbon Nanotubes (CNT) reinforced Cr
3
C
2
-20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal spraying method. The comparative effects of variation in CNT content (from 1 to 2 weight percentage) on mechanical properties and hot corrosion behaviour in super-heater zone of actual coal-fired boiler of a thermal power plant at 900°C have been investigated. After exposure to boiler environment, the corrosion products have been analysed by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, energy dispersive and cross-sectional analysis techniques. The results confirmed that variation in CNT content improved the mechanical and microstructural properties of surface coatings by modifying their surface characteristics. The variation in CNT content improved the corrosion protection property of composite coating at high temperature of exposure. Reduction in corrosion rate was observed with increase in CNT content from 1 to 2 weight percentage in the Cr
3
C
2
-20NiCr coating matrix. |
---|---|
AbstractList | Carbon Nanotubes (CNT) reinforced Cr3C2–20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal spraying method. The comparative effects of variation in CNT content (from 1 to 2 weight percentage) on mechanical properties and hot corrosion behaviour in super-heater zone of actual coal-fired boiler of a thermal power plant at 900°C have been investigated. After exposure to boiler environment, the corrosion products have been analysed by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, energy dispersive and cross-sectional analysis techniques. The results confirmed that variation in CNT content improved the mechanical and microstructural properties of surface coatings by modifying their surface characteristics. The variation in CNT content improved the corrosion protection property of composite coating at high temperature of exposure. Reduction in corrosion rate was observed with increase in CNT content from 1 to 2 weight percentage in the Cr3C2–20NiCr coating matrix. Carbon Nanotubes (CNT) reinforced Cr 3 C 2 -20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal spraying method. The comparative effects of variation in CNT content (from 1 to 2 weight percentage) on mechanical properties and hot corrosion behaviour in super-heater zone of actual coal-fired boiler of a thermal power plant at 900°C have been investigated. After exposure to boiler environment, the corrosion products have been analysed by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, energy dispersive and cross-sectional analysis techniques. The results confirmed that variation in CNT content improved the mechanical and microstructural properties of surface coatings by modifying their surface characteristics. The variation in CNT content improved the corrosion protection property of composite coating at high temperature of exposure. Reduction in corrosion rate was observed with increase in CNT content from 1 to 2 weight percentage in the Cr 3 C 2 -20NiCr coating matrix. |
Author | Goyal, Rakesh Goyal, Khushdeep |
Author_xml | – sequence: 1 givenname: Khushdeep surname: Goyal fullname: Goyal, Khushdeep email: khushgoyal@yahoo.com organization: Department of Mechanical Engineering, Punjabi University – sequence: 2 givenname: Rakesh surname: Goyal fullname: Goyal, Rakesh organization: Chitkara University Institute of Engineering and Technology, Chitkara University |
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Keywords | Thermal spray coatings carbon nanotubes boiler HVOF hot corrosion |
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References | Sidhu, Prakash, Agrawal 2006; 515 Sidhu, Goyal, Goyal 2017; 64 Goyal, Sidhu, Chawla 2017; 92 Kaur, Singh, Prakash 2010; 26 Kaur, Singh, Prakash 2008; 55 Jiang, Liu, Wang 2018; 34 Jambagi, Agarwal, Sarkar 2018; 27 A Saleh, K Gupta 2012; 8 Wang, Geng 2003; 19 Gong, Mei, Qiao 2015; 31 Goyal, Singh, Bhatia 2019; 26 Martin, Vick, Enneti 2015; 30 Han, Wang, Liu 2015; 628 Toma, Brandl, Köster 2000; 53 Singh, Goyal, Bhatia 2018; 42 Anderson 2017; 38 Bala, Singh, Prakash 2010; 31 Prakash, Tewari, Kumar 2018; 7 Kalsi, Sidhu, Singh 2014; 30 Balani, Chen, Harimkar 2007; 3 Ang, Howse, Wade 2016; 32 Memmi 2013; 29 Goyal, Chawla, Sidhu 2014; 3 Guo, Tam 2014; 72 Keyvani, Bahamirian 2017; 33 Goyal, Singh, Bhatia 2018; 15 Brindley 1996; 5 Clarke, Oechsner, Padture 2012; 37 Chatha, Sidhu, Sidhu 2012; 11 Bengtsson, Johannesson 1995; 4 Goyal, Sidhu, Chawla 2018; 65 Fukanuma 1994; 3 Goyal, Sidhu, Goyal 2018; 61 Chen, Balani, Agarwal 2007; 91 Keshri, Singh, Huang 2010; 204 Swadźba, Moskal, Mendala 2008; 53 Asl, Farahbakhsh, Nayebi 2016; 42 Wielage, Hofmann, Steinhauser 1998; 14 Goyal, Singh, Bhatia 2019 Goyal, Singh, Bhatia 2018; 5 |
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Snippet | Carbon Nanotubes (CNT) reinforced Cr
3
C
2
-20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal... Carbon Nanotubes (CNT) reinforced Cr3C2–20NiCr composite coatings were prepared and deposited on alloy steel using high-velocity oxyfuel (HVOF) thermal... |
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StartPage | 1200 |
SubjectTerms | boiler carbon nanotubes hot corrosion HVOF Thermal spray coatings |
Title | Improving hot corrosion resistance of Cr3C2-20NiCr coatings with CNT reinforcements |
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