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Mechanical properties of ceramics in the systems SIALON-Garnet and SIALON-Cordierite

Technical Report ·
OSTI ID:6467446
Additional high temperature mechanical property data were collected in this period. Samples were prepared by hot pressing at 1750/sup 0/C for various length of time to develop ..beta..-SIALON grains with different sizes and aspect ratios. The composition of ..beta..-SIALON containing 10 equivalent % of aluminum (designate as ..beta..-10) containing 2 and 10 wt % of garnet and ..beta..-10 containing 10 wt % of cordierite were prepared. Specimens were hot pressed at 1750/sup 0/C for one hour. Typical microstructure of these samples are shown. Size and aspect ratio of the ..beta..-SIALON grains in these samples are given. Temperature dependence of fracture strength and fracture toughness of these specimens were measured. The strength was measured by 4 point bending and toughness was measured by indentation bend.
Research Organization:
Michigan Univ., Ann Arbor (USA). Dept. of Materials and Metallurgical Engineering
DOE Contract Number:
FG02-84ER45069
OSTI ID:
6467446
Report Number(s):
DOE/ER/45069-T2; ON: DE86003864
Country of Publication:
United States
Language:
English