Sintering AL2O3-CR composites made from micro-and Nan powders | Zendy

K. Pietrzak | Zendy; Marcin Chmielewski | Zendy; W. Włosiński | Zendy

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Sintering AL2O3-CR composites made from micro-and Nan powders

Author(s) -

K. Pietrzak,

Marcin Chmielewski,

W. Włosiński

Publication year - 2004

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos0403171p

Subject(s) - sintering , materials science , composite number , composite material , powder metallurgy , granularity , computer science , operating system

This paper presents the results of studies on sintering Al2O3-Cr composites of different chemical compositions (from 25 to 75 vol.% of each component). The factor analyzed was the influence of time (from 15 to 60 min) temperature (from 1200-1600°C), pressure (0.5 and 30 MPa) and powder graining (for Al2O3 powders-80nm or 1μm) on the density of sinters obtained. It was found that Nan powder composites are characterized by a higher density (by about 1-2%) than the micro powder composite, the remaining conditions of the process intact. Using the pressure of 30MPa allows obtaining of a definite sintering degree at a temperature of about 200°C lower than at a pressure of 0.5 MPa

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