High Temperature Composites Using Microwave Enhanced Chemical Vapor Infiltration
Abstract
Significant improvements in power and propulsion systems for both aerospace and terrestrial applications are needed to realize reductions in platform cost, fuel consumption, pollution and noise. At the same time, improvements in system performance, reliability, safety and service life are also being demanded. To deliver all of these, major advances in materials and structures are essential. In addition to withstanding severe stresses and hostile aero-thermo-chemical environments, these materials must also allow for higher operating temperatures and reduced weight compared to current engines, which are composed primarily of metallic components. Applications include turbine combustors, ducts, vanes, nozzles and, perhaps ultimately, integral turbine blades and disks. Candidate materials systems include silicon carbide fiber reinforced silicon carbide (SiCf-SiC), carbon fiber reinforced silicon carbide (Cf-SiC), silicon carbide fiber reinforced ultra-high temperature ceramics (SiCf-UHTC) and carbon fiber reinforced ultra-high temperature ceramics (Cf-UHTC); they offer increasing temperature performance in the order listed. Whilst much depends on the atmosphere, environment and exposure duration, SiCf-SiC can be used at temperatures of around 1200oC whilst Cf-UHTC composites have been shown to be capable of surviving near 3000oC for several minutes in highly aggressive environments [ ].
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 23, 2016
- Source ID
- FA95501510465
Entities
People
- Jon Binner
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Birmingham