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Structure and properties of hot-pressed boron carbide ceramics

Journal Article:

Abstract

The microstructure and strength of B4C-TiB2-TiO{sub 2} ceramics samples, hot-compacted from a mixture of two types of B4C-TiO2-C powder, are examined. The two types are obtained by combining boric acid with either sucrose or carbon black. The grain-sizes of the two powders are found to be distinctly different from one another both before and after the grinding procedure and the degree of dispersion is not high. The strength tests show 600 MPa, the Vicker's hardness is 34.5 GPa, and the crack resistance coefficient of ceramics containing 15 percent TiB2 by mass is 5 MPa m exp 1/2. The use of soluble boron carbide powder helps achieve higher levels of strength and crack resistance. 5 refs.
Authors:
Koval'chenko, M S; Tkachenko, IU G; Koval'chuk, V V; Iurchenko, D Z; Satanin, S V [1] 
  1. Institut Problem Materialovedeniia, Kiev (Ukrainian SSR)
Publication Date:
Jul 01, 1990
Product Type:
Journal Article
Reference Number:
EDB-91-022115
Resource Relation:
Journal Name: Poroshkovaya Metallurgiya (Kiev); (Ukrainian SSR)
Subject:
36 MATERIALS SCIENCE; BORON CARBIDES; FRACTURE PROPERTIES; MICROSTRUCTURE; TITANIUM BORIDES; TITANIUM OXIDES; CERAMICS; HOT PRESSING; POROSITY; POWDER METALLURGY; BORIDES; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; CRYSTAL STRUCTURE; FABRICATION; MATERIALS WORKING; MECHANICAL PROPERTIES; METALLURGY; OXIDES; OXYGEN COMPOUNDS; PRESSING; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360202* - Ceramics, Cermets, & Refractories- Structure & Phase Studies; 360203 - Ceramics, Cermets, & Refractories- Mechanical Properties
OSTI ID:
6085307
Country of Origin:
Ukraine
Language:
Russian
Other Identifying Numbers:
Journal ID: ISSN 0032-4795; CODEN: PMANA
Submitting Site:
IAA
Size:
Pages: 16-20
Announcement Date:

Journal Article:

Citation Formats

Koval'chenko, M S, Tkachenko, IU G, Koval'chuk, V V, Iurchenko, D Z, and Satanin, S V. Structure and properties of hot-pressed boron carbide ceramics. Ukraine: N. p., 1990. Web.
Koval'chenko, M S, Tkachenko, IU G, Koval'chuk, V V, Iurchenko, D Z, & Satanin, S V. Structure and properties of hot-pressed boron carbide ceramics. Ukraine.
Koval'chenko, M S, Tkachenko, IU G, Koval'chuk, V V, Iurchenko, D Z, and Satanin, S V. 1990. "Structure and properties of hot-pressed boron carbide ceramics." Ukraine.
@misc{etde_6085307,
title = {Structure and properties of hot-pressed boron carbide ceramics}
author = {Koval'chenko, M S, Tkachenko, IU G, Koval'chuk, V V, Iurchenko, D Z, and Satanin, S V}
abstractNote = {The microstructure and strength of B4C-TiB2-TiO{sub 2} ceramics samples, hot-compacted from a mixture of two types of B4C-TiO2-C powder, are examined. The two types are obtained by combining boric acid with either sucrose or carbon black. The grain-sizes of the two powders are found to be distinctly different from one another both before and after the grinding procedure and the degree of dispersion is not high. The strength tests show 600 MPa, the Vicker's hardness is 34.5 GPa, and the crack resistance coefficient of ceramics containing 15 percent TiB2 by mass is 5 MPa m exp 1/2. The use of soluble boron carbide powder helps achieve higher levels of strength and crack resistance. 5 refs.}
journal = {Poroshkovaya Metallurgiya (Kiev); (Ukrainian SSR)}
journal type = {AC}
place = {Ukraine}
year = {1990}
month = {Jul}
}