ZIRCONIUM CARBONITRIDE-METAL BORIDE-BASED CERAMIC SINTERED BODY

PURPOSE:To obtain the title zirconium carbonitride-metal boride-based ceramic having high strength, hardness, and density by adding a specified amt. of metal boride powder to zirconium carbonitride powder, and sintering the obtained mixture. CONSTITUTION:From 5-95wt.%, based on the total weight, >...

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Main Authors WATANABE TADAHIKO, SHOBU KAZUHISA, KAI YUKIO, MICHITSU TAKESHI, YAMAMOTO HIDEKI, HAYAKAWA JUNSHIRO, YAGISHITA TADASHI, SUDO HIDEKAZU
Format Patent
LanguageEnglish
Published 12.12.1988
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:PURPOSE:To obtain the title zirconium carbonitride-metal boride-based ceramic having high strength, hardness, and density by adding a specified amt. of metal boride powder to zirconium carbonitride powder, and sintering the obtained mixture. CONSTITUTION:From 5-95wt.%, based on the total weight, >=1 kind among the powder of a metal diboride such as ZrB2, HfB2, NbB2, TaB2, TiB2, CrB2, MnB2, MoB2, VB2 and AlB2, the powder of a metal monoboride such as ZrB, HfB, NbB, TaB, TiB, CrB, MnB, MoB, VB, and AlB, and the powder of an M2B5-type metal boride forming a hexagonal system at high temp. such as W2B5 and Mo2B5 is added to zirconium carbonitride powder. The mean particle diameter of the powder is preferably controlled to <=about 2mum. The obtained mixture is heated at about 1,500-2,000 deg.C for about 10-200min, and sintered. By this method, a ceramic sintered body having excellent resistance to oxidation, wear, corrosion, etc., and appropriately used as the material for cutting tools, mechanical parts having high wear resistance, etc., is obtained.
Bibliography:Application Number: JP19870138798