Zastosowanie wgłębnika Vickersa do pomiaru odporności na pękanie powierzchniowe spieków ceramicznych

Abstract

Results of research into determination of indentation fracture toughness measurement of advanced ceramics for example of $α-Al_2O_3$ and $Al_2O_3-ZrO_2$ composite has been presented in this work. Indentation fracture toughness has been determined from direct measurement of the crack length, developed from Vickers indent corner along his diagonal as a load function. Indentation fracture toughness was calculated basis of a formula proposed by Niihara, in accordance with crack shape observed on a specimen cross-section.