Zirconium dioxide based material, surgical cutting tools made of zirconium dioxide based material, tools made of zirconium dioxide based material

摘要

A on zirconium dioxide based material stabilised by an yttrium oxide, contains an additional metal oxide as a stabilising component selected from a group consisting of calcium oxide, magnesium oxide, strontium oxide, scandium oxide, and oxides of rare-earth elements from europium to lutetium. The proportion of said components is as follows (mole %): yttrium oxide: 0.5-4.5; stabilising component: 0.1-4.5; zirconium oxide: the rest. The inventive surgical cutting tool comprises a blade with a stem and a blade holder for rigid fixing thereof. The blade is made of one crystal of the zirconium dioxide based material. The crystal has a nanocrystal structure with domain dimensions of 200 nm without phase interfaces. The material is stabilised by the yttrium oxide and contains the additional stabilised component such as metal oxide selected from a group consisting of calcium oxide, magnesium oxide, strontium oxide, scandium oxide, and oxides of rare-earth elements from europium to lutetium. The proportion of said components is as follows (mole %): yttrium oxide: 0.5-4.5; stabilising component: 0.1-4.5; zirconium oxide: the rest. Said material can also be used for manufacturing technological tools, for example rollers, dies, plain bearings.