Continuous Mullite Fiber Program

Period of Performance: 08/11/1994 - 08/11/1996

$736K

Phase 2 SBIR

Recipient Firm

Saphikon, Inc.
33 Powers St
Milford, NH 03055
Principal Investigator

Research Topics

Abstract

The Phase II project will determine the best process parameters for the growth of Mullite (Al6Si2O13) single crystal fibers using the Edge-defined, Film-fed, Growth (EFG) process. Included in this investigation will be melt chemistry, die type, growth rate and melt temperature. Die fabrication and materials issues will be investigated to provide improved dies and hot zone parts and provide for a significant scale-up in process capability. The multi-fiber growth of mullite fibers will also be demonstrated with a deliverable goal of 1000 meters. A 50-75 micron mullite fiber will be demonstrated. The fiber grown will be characterized using metallography, room and elevated temperature tensile strength, creep and static fatigue.