Finite Element Analysis Modeling of Chemical Vapor Deposition of Silicon Carbide

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, and/or 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.

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Document Details

Document Type
Technical Report
Publication Date
Jun 19, 2014
Accession Number
ADA602930

Entities

People

  • Brandon M. Allen

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Arrhenius Equation
  • Boundary Layer
  • Ceramic Materials
  • Ceramic Matrix Composites
  • Chemical Reactions
  • Chemistry
  • Composite Materials
  • Computational Fluid Dynamics
  • Finite Element Analysis
  • Fluid Flow
  • Heat Transfer
  • Materials
  • Materials Processing
  • Silicon Carbide
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)
  • Reinforced Composite Materials