journal article·2019-09

Catalytic Fabrication of SiC/SiO2 coated graphite and its behaviour in Al2O3–C castable systems

Yubao Bi, Haijun Zhang, Huifang Wang, Shaopeng Duan, Quanli Jia, Shengtao Ge, Shaowei Zhang

Ceramics International· Volume 45· Issue 13
Publisher page

Abstract

Abstract SiC/SiO 2 coated graphite was prepared via a combined sol-gel coating and catalytic conversion route, using graphite flake and tetraethyl orthosilicate as the starting materials, and Fe(NO 3 ) 3 ·9H 2 O as the catalyst precursor. X-ray diffraction analysis and microstructural examination revealed that a homogeneous coating comprising SiC and cristobalite (SiO 2 ) and covering the whole surface of graphite was formed. As prepared SiC/SiO 2 coated graphite exhibited better oxidation resistance and water wettability than its uncoated counterpart. Also, oxidation resistance and slag corrosion resistance of a model Al 2 O 3 –C castable using coated graphite as a carbon source were better than in the case of its counterpart using uncoated graphite.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Fiber-reinforced polymer composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (30)

Show source-provided references
1. Carbon containing castables: current status and future prospects10.1179/096797801125000410 ↗
2. Magnesia-carbon bricks –A high-duty refractory material
3. Wettability by water and oxidation resistance of alumina-coated graphite powder10.2109/jcersj.103.929 ↗
4. Improving the water-wettability and oxidation resistance of graphite using Al2O3/SiO2 sol-gel coatings10.1016/S0955-2219(02)00284-4 ↗
5. Improvement in flowability, oxidation resistance and water wettability of graphite powders by TiO2 coating10.2109/jcersj.104.481 ↗
6. Preparation of ZrO2 coated graphite powders10.1023/A:1004894404376 ↗
7. Development of MgAl2O4 spinel coating on graphite surface to improve its water-wettability and oxidation resistance10.1016/j.ceramint.2007.12.007 ↗
8. Spinal-coated graphite for carbon containing refractory castables10.1111/j.1551-2916.2009.03133.x ↗
9. Improving the quality of nanocrystalline MgAl2O4 spinel coating on graphite by a prior oxidation treatment on the graphite surface10.1016/j.jeurceramsoc.2008.01.020 ↗
10. Development of mullite and spinel coatings on graphite for improved water-wettability and oxidation resistance10.1016/j.ceramint.2010.03.035 ↗
11. Mullite coatings on graphite for application in carbon containing monolithice refractory
12. Nanostructured cementitious sol gel coating on graphite for application in monolithic refractory composites10.1016/j.ceramint.2011.09.006 ↗
13. Significant improvement of refractoriness of Al2O3-C castables containing calcium aluminate nano-coatings on graphite10.1016/j.ceramint.2013.08.112 ↗
14. Novel synthesis and characterization of silicon carbide nanowires on flake graphites10.1016/j.ceramint.2013.08.051 ↗
15. Molten salt synthesis of a SiC coating on graphite flakes for application in refractiory castables10.1016/j.ceramint.2016.04.120 ↗
16. Molten salt synthesis and characterization of titanium carbide-coated graphite flakes for refractory castable applications10.1111/j.1744-7402.2010.02529.x ↗
17. Molten salt synthesis of continuous tungsten carbide coatings on graphite flakes10.1016/j.ceramint.2017.03.131 ↗
18. Low-temperature synthesis of nanocrystalline ZrC coatings on flake graphite by molten salts10.1016/j.apsusc.2017.02.196 ↗
19. Green preparation of in situ Cr3C2 nano-coating on graphite surface and their water-wettability and rheological properties10.1016/j.ceramint.2018.02.172 ↗
20. Preparation and oxidation resistance of SiC-coated graphite powders via microwave-assisted molten salt synthesis10.1016/j.surfcoat.2018.01.017 ↗
21. Preparation and characterization of Ni-B/SiO2 sol amorphous catalyst and its catalytic activity for hydrogenation of nitrobenzene10.1016/j.catcom.2016.07.008 ↗
22. Preparation of anti-oxidative SiC/SiO2 coating on carbon fibers from vinyltriethoxysilane by sol-gel method10.1016/j.apsusc.2012.11.056 ↗
23. Synthesis of disperse amorphous SiO2 nanoparticles via sol-gel process10.1016/j.ceramint.2016.09.133 ↗
24. High-yield production of large aspect ratio carbon nanotubes via catalytic pyrolysis of cheap coal tar pitch10.1016/j.carbon.2018.01.060 ↗
25. Catalytic effect of cobalt on microwave synthesis of β-SiC powder10.1016/j.powtec.2017.05.004 ↗
26. In-situ catalytic preparation and characterization of SiC nanofibers coated graphite flake with improved water-wettability10.1016/j.ceramint.2017.08.138 ↗
27. Nickel-catalyzed preparation of self-bonded SiC refractories with improved microstructure and properties10.1016/j.jeurceramsoc.2018.07.003 ↗
28. SiC/SiO2 coating for improving the oxidation resistive property of carbon nanofibers10.1016/j.apsusc.2010.08.104 ↗
29. Nonisothermal crystallization behavior of polypropylene-clay nanocomposites10.1016/j.eurpolymj.2006.03.012 ↗
30. Oxidation resistance of ZrB2 and ZrB2-SiC ultrafine powders synthesized by a combined sol-gel and boro/carbothermal reduction method10.1016/j.ceramint.2017.03.080 ↗