Accession Number:

ADA149756

Title:

Evaluation of Corrosion/Erosion Behavior of Various Ceramic Materials.

Descriptive Note:

Final rept. 1 Sep 80-30 Jun 83,

Corporate Author:

IIT RESEARCH INST CHICAGO ILL MECHANICS OF MATERIALS RESEARCH DIV

Personal Author(s):

Report Date:

1984-06-01

Pagination or Media Count:

347.0

Abstract:

Baseline and simulated environment post-exposure test results of fourteen candidate ceramic materials for stationary power-generating gas turbines are presented. The materials studied were various material types of silicon nitride, silicon carbide, aluminum nitride, A1203-Zr02, A1203-SiC, MgA1204 spinel, and SiA1ON. One dynamic 1425 deg C, 305 ms, 1000 hr and nine static 1000 deg, 1200 deg, and 1425 deg C for 100, 300, and 1000 hr exposures were conducted at the Morgantown Energy Technology Center facility of the Department of Energy. The exposure environment was coal-derived fuel gas combustion products created in a fixed-bed gasification system. Post-exposure evaluation involved evaluation of surface chemistry and morphology, weight and dimension change, retained room-temperature strength and fracture surface analysis. Based upon limited testing and the small sample population available, the materials are ranked according to their probable survivability in power turbine applications.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE