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Cement-Free Refractory Concretes. Part 2. High-Alumina and Corundum Ceramic Concretes 1
Refractories and Industrial Ceramics ( IF 0.4 ) Pub Date : 2020-05-26 , DOI: 10.1007/s11148-020-00408-0
Yu. E. Pivinsky , P. V. Dyakin , E. M. Grishpun , A. M. Gorokhovsky

On the basis of refractory bauxite and very fine quartz glass (VFQG) by means of stagewise combined wet grinding HCBS are prepared having a low moisture content and good binder properties that are achieved due to an optimum content within them of very fine particles (nano-particles and colloidal component). These HCBS are used as a matrix system in the manufacture of many forms of ceramic concrete in the systems Al2O3–SiO2, Al2O3–SiO2–SiC, and Al2O3–SiO2–SiC–C. All of them are distinguished by improved thermomechanical and operating properties. Based on electrocorundum and VFQG similar HCBS and corundum ceramics are prepared (95% Al2O3) with their use. Corundum ceramic concretes are prepared based on a vibration-cast mixture with a moisture content of 3.8% having porosity up to 11% and good strength at elevated temperature.

中文翻译:

无水泥耐火混凝土。第2部分。高铝和刚玉陶瓷混凝土1

在耐火铝土矿和极细石英玻璃(VFQG)的基础上,采用分段组合湿磨法制备了HCBS,它具有较低的水分含量和良好的粘结性能,这是由于其中的极细颗粒(纳米级-颗粒和胶体成分)。这些HCBS在制造Al 2 O 3 -SiO 2,Al 2 O 3 -SiO 2 -SiC和Al 2 O 3 -SiO 2系统中的多种形式的陶瓷混凝土的过程中用作基质系统。–SiC–C。所有这些均以改进的热机械性能和操作性能为特色。在电刚玉和VFQG的基础上,可以制备出类似的HCBS和刚玉陶瓷(95%Al 2 O 3)。刚玉陶瓷混凝土是基于一种振动浇铸混合物制备的,该混合物的水分含量为3.8%,孔隙率高达11%,并且在高温下具有良好的强度。
更新日期:2020-05-26
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