The Open Materials Science Journal

2011, 5 : 61-65
Published online 2011 May 2. DOI: 10.2174/1874088X01105010061
Publisher ID: TOMSJ-5-61

Growth of Pyrocarbon by Multi-Physics Fields Chemical Vapor Infiltration

Mingyu Zhang , Zhiyong Xie , Zhean Su , Qizhong Huang and Jianxun Chen
State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.

ABSTRACT

A novel rapid chemical vapor infiltration (CVI) processing defined by multi-physics fields CVI was used to fabricate carbon/carbon (C/C) composites. Liquid petrol gas is used as carbon source and the parameters were experimental tested and optimized. The influence of temperature and pressure on the growth of pyrocarbon was investigated in detail. Because of the influence of multi-physics fields, a new surface morpha is grown under control parameters. It is called “Dot Structure”. The structure of pyrocarbon is analyzed and characterized by XRD, SEM with EDS, and Raman spectrum. At the end, a simple model of point discharge for growth of pyrocarbon is proposed. The deposited pyrocarbon based on multi-physics fields chemical vapor infiltration is expected to provide an improve performance in rapid C/C composites fabrication.