Accession Number : ADD002197

Title :   Hot Pressed, High Strength Silicon Nitride.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Gazza,George E

Report Date : 20 Aug 1974

Pagination or Media Count : 3

Abstract : The patent relates to the fabrication of high strength, high density, silicon nitride by the addition of between 1.0 to 3.5 percent by weight of yttrium in the form of a compound to silicon nitride powder and pressing the material at temperatures of between 1,750C. and 1,800C. and at uniaxial pressures of between 6,000 and 7,000 psi.

Descriptors :   *Silicon nitrides, *Patents, Additives, Yttrium, Hot pressing

Subject Categories : Ceramics, Refractories and Glass

Distribution Statement : APPROVED FOR PUBLIC RELEASE