Thermal-shock resistant alumina-metal cermet insulators

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Am. Ceram. Soc. Bull.; (United States)

OSTI ID:5709487

Morgan, C S; Moorhead, A J; Lauf, R J

An alumina cermet material that contains 0.5 to 1.5 vol% finely dispersed platinum or chromium was developed for use in high temperature, thermal-shock-resistant electrical insulators. The cermets are produced by hot-pressing Al/sub 2/O/sub 3/-Pt or Al/sub 2/O/sub 3/-Cr powders containing finely dispersed metal particles obtained by in-situ reduction of platinum chloride or chromium nitrate. The metal particles increase the thermal-shock resistance by impeding and diverting cracks and by mechanically locking ceramic grains.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5709487
• Journal Information: Am. Ceram. Soc. Bull.; (United States), Journal Name: Am. Ceram. Soc. Bull.; (United States) Vol. 61:9; ISSN ACSBA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360200* -- Ceramics
Cermets
& Refractories
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CERMETS
CHALCOGENIDES
CHROMIUM ALLOYS
COMPOSITE MATERIALS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
EQUIPMENT
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PLATINUM ALLOYS
PLATINUM METAL ALLOYS
THERMAL SHOCK