Published May 26, 1992 | Version v1
Patent Metadata-only

High density hexagonal boron nitride prepared by hot isostatic pressing in refractory metal containers

Creators

Description

This patent describes a method of densifying hexagonal boron nitride. It comprises placing boron nitride powder in a refractory metal container consisting essentially of tantalum, niobium, tungsten, molybdenum or alloys thereof; hot isostatically pressing the refractory container filled with boron nitride powder at about 1800 C and at about 30 KSI (206.8 MPa) to form boron nitride with a bulk density greater than 2.0 g/cc and an isotropically uniform microstructure

Availability note (English)

Available from Patent and Trademark Office, Box 9, Washington, DC 20232 (United States).

Additional details

Publishing Information

Imprint Pagination
10 p.
IPC:
Int. Cl. C04B 35/64.
IPC
Int. Cl. C04B 35/64.
Patent number
US patent document 5,116,589/A/

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
24005341
Subject category
S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BORON NITRIDES; DENSITY; HOT PRESSING; POWDERS; TEMPERATURE RANGE 1000-4000 K
Descriptors DEC
BORON COMPOUNDS; FABRICATION; MATERIALS WORKING; NITRIDES; NITROGEN COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES; PRESSING; TEMPERATURE RANGE