Sintered Diamond Compacts with a Cobalt Binder

Diamond powder can be successfully cemented with cobalt. At 62 kilobars the sintering occurs over the temperature range from 1570 ° to 1610 ° C. The maximum microhardness of the compact (> 3000 kilograms per square millimeter on the Knoop scale) is obtained with a mixture of 20 percent cobalt (by...

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Published inScience (American Association for the Advancement of Science) Vol. 172; no. 3988; pp. 1132 - 1134
Main Authors Katzman, Howard, Libby, W. F.
Format Journal Article
LanguageEnglish
Published United States American Association for the Advancement of Science 11.06.1971
Subjects
Cobalt
Density
Electron microscopes
Electrons
Graphite
Grinding wheels
Hardness
Sintering
Treaties
Tungsten carbides
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Summary:Diamond powder can be successfully cemented with cobalt. At 62 kilobars the sintering occurs over the temperature range from 1570 ° to 1610 ° C. The maximum microhardness of the compact (> 3000 kilograms per square millimeter on the Knoop scale) is obtained with a mixture of 20 percent cobalt (by volume) and a diamond particle size of 1 to 5 micrometers.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0036-8075
1095-9203
DOI:10.1126/science.172.3988.1132