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SIALON

Award Information

Agency:
Department of Energy 		Branch:
N/A 		Award ID:
1168 		Program Year/Program:
1984 / SBIR
Agency Tracking Number:
1168 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
Gorham Advanced Materials Inst
Po Box 250 Gorham, ME 04038
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1984
Title: SIALON
Agency: DOE
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

THE OBJECTIVE OF THE PROPOSED STUDY IS TO DETERMINE THE FEASIBILITY OF FULLY DENSIFYING A SIALON VIA SINTER/HIP PROCESSING. SINTER/HIP IS AN INNOVATIVE APPROACH TO MATERIALS CONSOLIDATION WHICH INCORPORATES SINTERING AND CONTAINERLESS HIP'ING (HOT ISOSTATIC PRESSING) INTO A SINGLE, UNINTERRUPTED CYCLE CONDUCTED IN A HIP SYSTEM. IN THIS PROPOSED PROCESS TECHNOLOGY, GREEN PREFORMS ARE SINTERED UNDER MODERATE N2 PRESSURE TO HIGH DENSITY AND CLOSED POROSITY IN THE HIP VESSEL; FOLLOWING COMPLETION OF THE DESIGNATED SINTERING PHASE OF THE CYCLE, THE VESSEL IS RAPIDLY PRESSURIZED TO A SUITABLE HIP'ING PRESSURE (E.G., 30 KPSI), AND THE HIP PHASE OF THE CYCLE IS THEN CONDUCTED. SINTER/HIP THUS DIFFERS FROM THE "CONVENTIONAL" CONCEPT OF CONTAINERLESS HIP'ING, SINCE SINTER/HIP DOES NOT REQUIRE OR EMPLOY SEPARATE SINTERING AND HIP'ING SYSTEMS. ADDITIONALLY, SINTER/HIP MAKES POSSIBLE PROCESSING CONDITIONS DIFFERENT FROM THOSE USED IN THE "CONVENTIONAL" SINTER + CONTAINERLESS HIP APPROACH. THUS SINTER/HIP MAY YIELD TECHNICALLY UNIQUE MATERIALS WITH PROPERTIES AND MICROSTRUCTURES UNLIKE THOSE PRODUCED VIA OTHER PROCESS TECHNOLOGIES. THE PROPOSED STUDY WILL AIM AT FULLY DENSIFYING A 92 WT.% SI3N4 + 6 WT.% Y2O3 + 2 WT.% AL2O3 SIALON VIA SINTER/HIP. ROOM TEMPERATURE MODULUS OF RUPTURE VALUES FOR SINTER/HIP'ED SPECIMENS WILL BE GENERATED AND COMPARED WITH MOR VALUES FOR COMPOSITIONALLY SIMILAR SINTERED AND SINTERED + CONTAINERLESS HIP'ED SPECIMENS.

Principal Investigator:

Andrew c. nyce, ph.d.
VICE PRESIDENT

Business Contact:

Small Business Information at Submission:

Gorham International Inc.
209 Mosher Road South Windham, ME 04038

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No