Preparation and Properties of SiC Porous Ceramics Made by Oxidation-Bonding Technique
| Autor: | Hong Ling Zhao, Hong Fang Li, Yi Xia |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Carbon black engineering.material Condensed Matter Physics Microstructure Redox Porous ceramics Infiltration (hydrology) Coating Mechanics of Materials Phase composition visual_art engineering visual_art.visual_art_medium General Materials Science Ceramic Composite material |
| Zdroj: | Materials Science Forum. 848:233-236 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.848.233 |
| Popis: | SiC porous ceramics were prepared by oxidation-bonding technique using SiC powder as main material and carbon black as pore former. The phase composition, surface morphologies, bulk densities, porosities, mass and linear changes of the samples were also investigated. The physical-chemical properties have been analyzed. The results indicate that the oxidation reaction of SiC ceramics was accelerated with the increase of temperatures. It displays undamaged surface after 1400°C treatment, as well as fused surface after 1450°C treatment. The latter is attributed to violent oxidation reaction of SiC. As C contents increase, the porosities of the samples increase and the infiltration of O2 into interior of SiC ceramics was facilitated. The internal network microstructure is controlled by O2 infiltration and SiO2 coating. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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