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Title: Novel hard compositions and methods of preparation

Abstract

Novel very hard compositions of matter are prepared by using in all embodiments only a minor amount of a particular carbide (or materials which can form the carbide in situ when subjected to heat and pressure); and no strategic cobalt is needed. Under a particular range of conditions, densified compositions of matter of the invention are prepared having hardnesses on the Rockwell A test substantially equal to the hardness of pure tungsten carbide and to two of the hardest commercial cobalt-bonded tungsten carbides. Alternately, other compositions of the invention which have slightly lower hardnesses than those described above in one embodiment also possess the advantage of requiring no tungsten and in another embodiment possess the advantage of having a good fracture toughness value.

Inventors:
Issue Date:
OSTI Identifier:
5621277
Application Number:
ON: DE82004453
Assignee:
Dept. of Energy TIC; NTS-82-004387; ERA-07-030165; EDB-82-071736
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORON CARBIDES; HARDNESS; POWDER METALLURGY; IRON ALLOYS; NICKEL ALLOYS; TUNGSTEN BASE ALLOYS; HOT PRESSING; ALLOYS; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; FABRICATION; MATERIALS WORKING; MECHANICAL PROPERTIES; METALLURGY; PRESSING; TUNGSTEN ALLOYS; 360101* - Metals & Alloys- Preparation & Fabrication; 360103 - Metals & Alloys- Mechanical Properties

Citation Formats

Sheinberg, H. Novel hard compositions and methods of preparation. United States: N. p., 1981. Web.
Sheinberg, H. Novel hard compositions and methods of preparation. United States.
Sheinberg, H. Tue . "Novel hard compositions and methods of preparation". United States.
@article{osti_5621277,
title = {Novel hard compositions and methods of preparation},
author = {Sheinberg, H.},
abstractNote = {Novel very hard compositions of matter are prepared by using in all embodiments only a minor amount of a particular carbide (or materials which can form the carbide in situ when subjected to heat and pressure); and no strategic cobalt is needed. Under a particular range of conditions, densified compositions of matter of the invention are prepared having hardnesses on the Rockwell A test substantially equal to the hardness of pure tungsten carbide and to two of the hardest commercial cobalt-bonded tungsten carbides. Alternately, other compositions of the invention which have slightly lower hardnesses than those described above in one embodiment also possess the advantage of requiring no tungsten and in another embodiment possess the advantage of having a good fracture toughness value.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {2}
}