MOLYBDENUM DISILICIDE MATRIX COMPOSITES BY SLIP CASTING

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: N/A
Agency Tracking Number: 15156
Amount: $63,889.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Applied Sciences Inc
141 W Xenia Avenue Po Box, 579, Cedarville, OH, 45314
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jyh-ming Ting
 Principal Investigator
 (513) 767-1477
Business Contact
Phone: () -
Research Institution
N/A
Abstract
ALTHOUGH MOLYBDENUM DISILICIDE (MOSI2) EXHIBITS HIGH-TEMPERATURE CHEMICAL STABILITY AND HAS A MELTING POINT OF 2010 DEGREES CENTIGRADE, THE LACK OF ROOM-TEMPERATURE FRACTURE TOUGHNESS AND POOR HIGH-TEMPERATURE CREEP RESISTANCE HAVE SEVERELY LIMITED ITS STRUCTURAL APPLICATIONS. THEREFORE, IT IS DESIRED TO FABRICATE COMPOSITES USING MOSI2, AS THE MATRIX MATERIAL. UNLIKE THE CONVENTIONAL CVI PROCESS, WE PROPOSE A NOVEL SLIP CASTING TECHNIQUE TO FABRICATE SUCH COMPOSITES. THIS TECHNIQUE IS A MODERATE-TEMPERATURE, NET-SHAPE PROCESS WITH THE ADVANTAGES OF SHORTER PROCESSING TIME AS COMPARED TO CVI, LOW COSTDUE TO THE REDUCTION IN PROCESSING TIME AND PROCESSING TEMPERATURE, ETC. ANTICIPATED BENEFITS - IT IS ANTICIPATED THAT THE PROPOSED SLIP CASTING PROCESS WILL PROVIDE AN ECONOMICAL PATH IN FABRICATING MOSI2 MATRIX COMPOSITES. THE NET-SHAPE FORMING CAPABILITY OF THIS PROCESS ELIMINATES THE PROBLEMS OF JOINING DIFFERENT MATERIALS. THE POTENTIAL APPLICATIONS INCLUDE WHERE MATERIALS ARE REQUIRED TO EXHIBIT EXCELLENT OXIDATION RESISTANCE AND HIGH MECHANICAL STRENGTH.

* information listed above is at the time of submission.

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