Scholarlink

Abstract <p>The possibility of synthesizing cermets using a granulated blend (100 – <i>X</i>)(Ti + C) + <i>X</i>Me, <i>X</i> = 0–30 (wt %) is tested by replacing nichrome Me = Kh20H80 with a Ni–Cr mixture for granules with sizes of 0.6 and 1.7 mm. Experiments are carried out with impurity gas filtration in the direction of combustion front propagation or by removing them through the lateral surface of the sample. The impurity gas content in these mixtures is quantitatively estimated, thereby providing a consistent explanation for the experimental burning rates of the granulated blends. The calculation results show that a safe conductive combustion is observed for granules of all compositions with a size of 0.6 mm. For a mixture of granules with a size of 1.7 mm, convective combustion is observed at <i>X</i> &lt; 10% (Ni and Cr binder) and at <i>X</i> &lt; 20% (nichrome binder). The X-ray diffraction results detect the identity of the phase composition of the combustion products when nichrome is replaced with a Ni–Cr mixture at the same dilution with a metallic binder <i>X</i>, as well as the absence of secondary phases.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

SHS of TiC-Based Cermets: A Comparative Study of Binder Formation Methods

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • B. S. Seplyarskii,
  • R. A. Kochetkov,
  • T. G. Lisina,
  • N. I. Abzalov

摘要

Abstract

The possibility of synthesizing cermets using a granulated blend (100 – X)(Ti + C) + XMe, X = 0–30 (wt %) is tested by replacing nichrome Me = Kh20H80 with a Ni–Cr mixture for granules with sizes of 0.6 and 1.7 mm. Experiments are carried out with impurity gas filtration in the direction of combustion front propagation or by removing them through the lateral surface of the sample. The impurity gas content in these mixtures is quantitatively estimated, thereby providing a consistent explanation for the experimental burning rates of the granulated blends. The calculation results show that a safe conductive combustion is observed for granules of all compositions with a size of 0.6 mm. For a mixture of granules with a size of 1.7 mm, convective combustion is observed at X < 10% (Ni and Cr binder) and at X < 20% (nichrome binder). The X-ray diffraction results detect the identity of the phase composition of the combustion products when nichrome is replaced with a Ni–Cr mixture at the same dilution with a metallic binder X, as well as the absence of secondary phases.