Development of a sintering methodology through abnormal glow discharge for manufacturing metal matrix composites

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

Pérez, S.^1 ; Pineda, Y.^1 ; Sarmiento, A.^1 ; López, A.^1

Universidad Pedagógica y Tecnológica de Colombia (UPTC), Tunja, Colombia^1

关键词: Abnormal glow discharge;    Coefficient of frictions;    Compaction pressure;    Gaseous atmosphere;    Percentage of reinforcements;    Sintering temperatures;    Titanium carbides (TiC);    Working temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012024/pdf
DOI  :  10.1088/1742-6596/687/1/012024

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this study, a sintering methodology is presented by using abnormal glow discharge to metal matrix composites (MMC), consisting of 316 steel, reinforced with titanium carbide (TiC). The wear behaviour of these compounds was evaluated according to the standard ASTM G 99 in a tribometer pin-on-disk. The effect of the percentage of reinforcement (3, 6, and 9%), with 40 minutes of mixing in the planetary mill is analysed, using compaction pressure of 700MPa and sintering temperature of 1,100°C±5°C, gaseous atmosphere of H2- N2, and sintering time of 30 minutes. As a result of the research, it shows that the best behaviour against wear is obtained when the MMC contains 6% TiC. Under this parameter the lowest percentage of pores and the lowest coefficient of friction are achieved, ensuring that the incorporation of ceramic particles (TiC) in 316 austenitic steel matrix significantly improves the wear resistance. Also, it is shown that it is possible to sinter such materials using the abnormal glow discharge, being a novel and effective method in which the working temperature is reached in a short time.