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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Thermal shock and chemical corrosion resistance of oxide bonded porous SiC ceramics prepared by infiltration technique
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Thermal shock and chemical corrosion resistance of oxide bonded porous SiC ceramics prepared by infiltration technique

机译：渗透技术制备的氧化物粘结多孔SiC陶瓷的热冲击和化学耐腐蚀性

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摘要

Using the water- and air-quenching technique, the thermal shock resistance to cooling was evaluated as a function of quenching temperatures and quenching cycles for oxide bonded porous SiC ceramics prepared by infiltration technique. It was observed that the residual strength of the quenched samples decreases with increase in the quenching temperature. However residual strength becomes independent of quenching cycles after certain cycles since the thermal shock produced by repeated cycles remained almost constant. The hot corrosions of SiC samples exposed to Na2SO4 salt were performed at 1000 degrees C. The weight loss, strength reduction and morphology evolution of the SiC specimens during corrosion were revealed and explained. The chemical and thermal shock resistance results suggest a potential advantage of porous SiC ceramics prepared by infiltration technique for several industrial applications. (C) 2018 Elsevier B.V. All rights reserved.
机译：使用水和空气淬火技术，评价对冷却的热抗冲击性作为淬火温度和淬火循环通过渗透技术制备的氧化物粘结多孔SiC陶瓷的函数。 观察到淬火样品的残余强度随着淬火温度的增加而降低。 然而，由于通过重复循环产生的热冲击仍然几乎恒定，但残留强度变得与某些循环后的猝灭循环无关。 暴露于Na2SO4盐的SiC样品的热腐蚀在1000℃下进行。揭示并解释了SiC样本在腐蚀期间的重量损失，强度降低和形态演化。 化学和热抗冲击结果表明，多孔SiC陶瓷通过渗透技术用于几种工业应用的潜在优势。 （c）2018年elestvier b.v.保留所有权利。

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