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TiC–Fe Powders by Coupled SHS Reactions: An Overview
International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2019-04-29 , DOI: 10.3103/s1061386219010023
A. P. Amosov , A. R. Samboruk , I. V. Yatsenko , V. V. Yatsenko

The application of the SHS reactions yielding TiC coupled with the reduction of Fe from iron oxide to preparation of TiC–Fe powders from plain and granulated green mixtures was overviewed with special emphasis on (Fe2O3 + 2Al)–(Ti + C) (I) and (Fe2O3 + 3C)–(Ti + C) (II) compound mixtures. In case I of aluminothermic reduction, green (Ti + C) + x(Fe2O3 + 2Al) charges were prepared as a mixture of granules prepared separately from thermite (Fe2O3 + 2Al) and carbide (Ti + C) blends. In case II of carbothermic reduction, green (Ti + C) + x(Fe2O3 + 3C) mixtures were used without preliminary granulation. In both cases, combustion in an open reactor proceeded steadily without material splashing and yielded highly porous Fe(Al)–Fe3Al–Al2O3–TiC or TiC–Fe cermets that can be easily grinded to get abrasive powders. The above reactions are energy saving, technically simple, cost effective, and rather promising for R & D of industrial-scale processes to fabricate powdered TiC–Fe cermets to be used as abrasive materials, wear-resistant coatings, and catalysts.

中文翻译:

耦合SHS反应的TiC-Fe粉末概述

概述了SHS反应产生TiC的应用,以及将铁氧化物中的Fe还原到由纯净和颗粒状绿色混合物制备TiC-Fe粉末的过程,其中特别强调了(Fe 2 O 3 + 2Al)-(Ti + C) (I)和(Fe 2 O 3 + 3C)–(Ti + C)(II)的化合物混合物。如果铝热还原的,绿(钛+ C)+ X(FE 2 ö 3 + 2AL)收费制备成颗粒的混合物从铝热剂分别制备(FE 2 ö 3 + 2AL)和碳化硅(钛+ C)混合。在情况II在进行碳热还原的过程中,使用了绿色(Ti + C)+ x(Fe 2 O 3 + 3C)混合物,没有进行初步制粒。在这两种情况下,开放式反应器中的燃烧均稳定进行而没有材料飞溅,并产生了高度多孔的Fe(Al)–Fe 3 Al–Al 2 O 3 –TiC或TiC–Fe金属陶瓷,可以容易地研磨以获得磨料粉末。上述反应是节能的,技术上简单的,具有成本效益的,并且对于工业规模工艺的研发以制造粉末状TiC-Fe金属陶瓷用作磨料,耐磨涂层和催化剂很有希望。
更新日期:2019-04-29
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