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首页> 外文期刊>Journal of Materials Engineering and Performance >Fabrication of Microporous Corundum-Spinel Refractory Castables by Foam-Gelcasting Methods
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Fabrication of Microporous Corundum-Spinel Refractory Castables by Foam-Gelcasting Methods

机译：泡沫-铸铸法制备微孔刚玉-尖晶石耐火浇注料

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摘要

Microporous corundum-spinel castables with high strength and low thermal conductivity have been fabricated by foam-gelcasting methods. A systematical investigation on different properties of samples, such as porosity, pore size distribution, thermal conductivity, cold modulus of rupture, and cold crushing strength has been taken in this paper, and scanning electron microscopy (SEM) was used to characterize the microstructure of samples. Results show that the average pore size increases correspondingly when the content of foaming agent increases from 0 to 2.0 wt.%. It was found that when the content of the foaming agent is up to 1.5 wt.%, the thermal conductivity, cold modulus of rupture, and cold crushing strength of samples were 0.751 W/mK at 1000 A degrees C, 30.5, and 136 MPa, respectively.
机译：已经通过泡沫凝胶浇铸法制造了具有高强度和低导热率的微孔刚玉-尖晶石浇注料。本文对样品的不同性质进行了系统的研究，如孔隙度，孔径分布，导热系数，冷断裂模量和抗碎强度，并用扫描电子显微镜（SEM）表征了样品的微观结构。样品。结果表明，当发泡剂的含量从0增加到2.0重量％时，平均孔径相应地增加。发现当发泡剂的含量高达1.5wt。％时，在1000A℃，30.5和136MPa下，样品的热导率，冷断裂模量和冷抗碎强度为0.751W / mK。 ， 分别。

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