Preparation of TiB2/C Composites in a CVI Reactor

Author:

Kim Min Ki1,Kim Dong Phil1,Chung Gui Yung1

Affiliation:

1. Hongik University

Abstract

Titanium diboride (TiB2) appears to be an attractive candidate for a high-temperature fiber reinforced composites. Chemical Vapor Infiltration (CVI) has been carried out for the preparation of TiB2/C composites. Titanium diboride has been deposited from the gas mixtures of TiCl4, BCl3, and H2 in the furnace at the reaction temperatures between 850 to 950 °C and about 20 torr. Effects of infiltration parameters such as temperature, reaction time, and concentrations of BCl3 and H2 have been studied. Analyses with SEM, TGA and XPS were carried out. The amount of deposition in the preform increased with the increases of the reaction time, temperature and the flow rate of BCl3. The activation energy of the whole deposition reaction could be estimated from the Arrhenius plot.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. One-Step Preparation of TIB2-C Composite Bydc Arc Furnance;TMS 2016: 145thAnnual Meeting & Exhibition: Supplemental Proceedings;2016-02-03

2. One-Step Preparation of TiB2-C Composite by DC Arc Furnace;TMS 2016 145th Annual Meeting & Exhibition;2016

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