Preparation of Oxidation-Resistant Ultra High Melting Temperature Materials and Structures Using Laser Method

Abstract

This report describes laser and hybrid (laser + microwave) processing of ultra-high temperature ceramic (UHTC) materials. We have successfully developed new UHTC based composite materials that are capable of dealing with harsh environment encountered by hypersonic cruise and atmospheric re-entry vehicles. The advanced ZrB2-metal composites provide good performance at much lower densities than other UHTCs like hafnium diboride (HfB2) and refractory metals such as rhenium and tungsten. In addition, these ceramic-metal composites (cermets) reduce the likelihood of mechanical failures by increasing fracture toughness and thermal shock resistance that are inherent properties of mostly brittle ceramics, but at the same time enhance some material properties like hardness that usually lack in metals.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 06, 2009
Accession Number
ADA583075

Entities

People

  • Chen-nan Sun
  • Mool C Gupta
  • Tyson Baldridge

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Composite Materials
  • Electric Fields
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Graphitic Materials
  • Lasers
  • Materials
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Metal Matrix Composites
  • Oxidation Resistance
  • Silicon Carbide
  • Temperature Gradients
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Directed Energy
  • Hypersonics