CENTRO DE TECNOLOGIA DE RECURSOS MINERALES Y CERAMICA
Unidad Ejecutora - UE
Influence of phase composition on the sliding wear of composites in the system CaZrO3?MgO?ZrO2 against ZrO2 and steel
ABÍLIO SILVA; ESTEBAN AGLIETTI; FERNANDO BOOTH; CARMEN BAUDÍN; LILIANA GARRIDO; PILAR PENA
THEORETICAL AND APPLIED FRACTURE MECHANICS
ELSEVIER SCIENCE BV
Lugar: Amsterdam; Año: 2016 vol. 85 p. 125 - 133
An attractive way to obtain low cost calcium zirconate (CaZrO3) composites is mixing natural limestoneor dolomite with zirconia. These CaZrO3 based ceramic composites were often investigated as a promisinghigh refractory for casting metal alloys, cements, thermal and environmental barrier coating.In this study the sliding wear, fracture mechanism and friction properties of a CaZrO3-MgO-ZrO2 ceramicagainst ZrO2 and steel counter bodies was carried out. Wear and fracture surface mechanisms, influenceof its impurities and individual phases are discussed.The composite presents a coefficient of friction higher in ceramic/metal than in ceramic/ceramic pair,but the specific wear it is significantly higher when tested with the ZrO2 ball. The fracture surfaces presenta dominant transgranular fracture when tested with steel and intergranular fracture against ZrO2.