Chemical and Thermal Shock Resistance Properties of Porous Silicon Carbide Ceramics
Porous silicon carbide (SiC) potteries have been thought-out as promising candidates as the catalytic support, machinelike seals, hot-smoke and molten-metal filters, vapor turbine arrangement, heat exchanger tubes, etc. due to their excellent possessions. In such requests under corrosive atmosphere, the SiC stoneware materials knowledgeable different type of corrosions such as; deposit-persuaded corrosion, lifeless oxidation, active disintegration, scale volatility, scale interplays, etc., depending on their composition. SiC earthenware filters can withstand hostile chemical and thermal shock environments during their use, being more favorable than polymeric or metallic materials. Thermal and synthetic resistance characteristics ultimately determine the rightness and service life of potteries for applications in corrosive air. Detailed study on the effect of thermal shock and disintegration in strong acidic/soluble conditions at exalted temperature on absorbent SiC ceramics and the microstructure and mechanical characteristic evolutions of the corroded SiC potteries are still very few. It is always a preferable choice to have earlier information on warm shock and corrosion resistance characteristics of any new material before selecting the material for uses in one or more corrosion atmospheres. Therefore in this member it is aimed to review and quantitatively assess various types of thermal and synthetic corrosion at various hotnesses on the microstructure, materials characteristics and flexural strength of porous SiC potteries prepared by differing methods. A brief summary is given on the current state of information on the effect of chemical and warm corrosion, influence of the chemical disintegration conditions (type of seasoning, acid/alkali, temperature, pressure, etc) and warm shock resistance (abating/heating as a function of quenching temperatures and quenching phases, etc) on the material and mechanical characteristics.
Author(s) Details:
Dulal Das,
CSIR-Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata-700 032, India.
Nijhuma Kayal,
CSIR-Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata-700 032, India.
Please see the link here: https://stm.bookpi.org/RACMS-V5/article/view/8898
Keywords: SiC ceramics, corrosion, thermal shock, mechanical strength, microstructure