Abstract

The β- and 15R-sialons were obtained from coal waste (carbonaceous rocks) at the Institute of Fossil Fuels (IGI) for the first time in the world. Ceramics based on β-sialon powder made from carbonaceous rock by compression sintering possessed increased cracking resistance, as compared to that of known analogues, even when heated in a plasma flow at 2000°C. In this case, other characteristics of the ceramics, such as strength and thermal coefficient of linear expansion, are also in the acceptable ranges of characteristics for such materials. The full-scale tests of odd-shaped products at temperatures to 1420–1450°C did not cause destruction and cracking; this fact demonstrates the applicability of carbonaceous rocks of a certain composition as raw materials for the production of heat-resistant refractory nitride ceramics based on β-sialon. Technical requirements imposed on the composition of carbonaceous rocks suitable for the production of β-sialon found in the course of this study and technical characteristics of β- and 15R-sialon ceramics obtained from carbonaceous rocks are reported.

中文翻译：

---

煤渣作为生产耐热耐火材料β-Sialon陶瓷的有前途的原料

摘要

β-和15R-唾液素是世界上首次从化石燃料研究所（IGI）的煤炭废物（碳质岩石）中获得的。与已知类似物相比，即使是在2000°C的等离子流中加热，与现有类似物相比，由碳质岩石通过压缩烧结制成的基于β-sialon粉末的陶瓷也具有更高的抗裂性。在这种情况下，陶瓷的其他特性，例如强度和线性膨胀热系数，也在这种材料的特性的可接受范围内。在1420至1450°C的温度下对奇形产品进行的全面测试不会造成破坏和开裂；这一事实证明了某种组成的碳质岩作为生产基于β-赛隆的耐热耐火氮化物陶瓷的原料的适用性。