Accession Number:

ADA602930

Title:

Finite Element Analysis Modeling of Chemical Vapor Deposition of Silicon Carbide

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INSTITUTE OF TECHNOLOGY WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT

Personal Author(s):

Report Date:

2014-06-19

Pagination or Media Count:

191.0

Abstract:

Fiber-reinforced silicon carbide SiC composite materials are important for many applications due to their high temperature strength, excellent thermal shock and impact resistance, high hardness, and good chemical stability. The microstructure and phase composition of SiC composites can be tailored by fiber surface modification, the process parameters, andor fiber preform architecture. One process by which SiC composites can be produced is chemical vapor deposition CVD. This thesis primarily focuses on mass transport by gas-phase flow and diffusion, chemical reaction in gas phase and on solid surfaces, and thin film formation on curved surfaces, which are fundamental to the CVD process. We highlighted process parameters that can potentially affect the structures and properties of the CMCs using simple model material systems. We also analyzed the use of a finite element modeling tool, COMSOL Multiphysics, to build the series of models.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE