Heat conductivity, physico-mechanical properties and interrelations of them and structures of pressureless sintered composites produced of Si3N4-Al2O3-Y2O3(-ZrO2) nanodispersed system View Full Text


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Article Info

DATE

2014-03

AUTHORS

O. N. Kaidash, I. P. Fesenko, Ya. A. Kryl’

ABSTRACT

The microstructures and properties of high-density materials produced by a pressureless sintering of nanodispersed powders of composition Si3N4-Al2O3-Y2O3(-ZrO2) have been studied. It has been found that these self-reinforced materials of low glass phase content exhibit the bending strength Rbm = 720–850 MPa, Vickers hardness = 15.3–15.7 GPa, fracture toughness = 6.0–6.1 MPa·m1/2, and heat conductivity = 15–25 W(m·K). The factors affecting physico-mechanical properties and heat conductivity of silicon-nitride materials have been discussed. More... »

PAGES

96-104

Identifiers

URI

http://scigraph.springernature.com/pub.10.3103/s106345761402004x

DOI

http://dx.doi.org/10.3103/s106345761402004x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1035552375


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