High impact resistant ceramic composite

Patent · Tue Jul 16 04:00:00 EDT 1991

OSTI ID:7276852

Derkacy, J A

A ceramic material and a method of forming a ceramic material which possesses a high impact resistance are disclosed. The material comprises: (a) a first continuous phase of [beta]-SiC; and (b) a second phase of about 25-40 vol % TiB[sub 2]. Al[sub 2]O[sub 3] is preferably used as a densification aid. The material is formed by hot-pressing the mixture at a temperature from greater than about 1800 C to less than the transition temperature of [beta]-SiC to [alpha]-SiC. The hot-pressing is performed at a pressure of about 2000 psi to about 4000 psi in an inert atmosphere for several hours and results in the formation of a two phase sintered ceramic composite material. 6 figures.

• DOE Contract Number: AC04-87AL42548
• Assignee: Aluminum Company of America, Pittsburgh, PA (United States)
• Patent Number(s): A; US 5032550
• Application Number: PPN: US 7-420922
• OSTI ID: 7276852
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
COMPACTING
COMPOSITE MATERIALS
FABRICATION
HOT PRESSING
IMPACT STRENGTH
MATERIALS
MATERIALS WORKING
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PRESSING
SILICON CARBIDES
SILICON COMPOUNDS
TITANIUM BORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS