Microstructure optimization of alumina/zirconia materials resistant for abrasive wear *

STRESZCZENIE: Spiekane kompozyty ziarniste w układzie korundtetragonalne polikryształy dwutlenku cyrkonu są grupą materiałów często stosowaną jako ceramika konstrukcyjna, ze względu na stosunkowo niską cenę oraz dobry poziom właściwości mechanicznych. W pracy przedstawiono wyniki eksperymentu korelującego podstawowe parametry mechaniczne (wytrzymałość, odporność na kruche pękanie) oraz użytkowe (odporność na zużycie ścierne, odporność na pękanie podkrytyczne) z mikrostrukturą tworzyw kompozytowych.

SŁOWA KLUCZOWE: korund, dwutlenek cyrkonu, mikrostruktura, odporność na ścieranie

ABSTRACT: Sintered particulate composites in corundum-tetragonal zirconia system are the group of materials often utilized as structural ceramics because of their relatively low cost and high level of mechanical properties. In the paper results of experiment correlating basic mechanical (strength, fracture toughness) and useful (abrasive wear resistance, subcritical crack growth) parameters with composites microstructure were presented.

KEYWORDS: corundum, tetragonal zirconia, microstructure, wear resistance

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DOI: http://dx.doi.org/10.17814/mechanik.2016.5-6.55