wearable zirconium oxide doceram Keramikrohr sleeve bushing 

wearable zirconium oxide doceram Keramikrohr sleeve bushing Reputation depends on quality,  quality comes from Hard! Zirconia Ceramics: Zirconia ceramic sleeve is a common ceramic product, in which zirconia is its main component. The most abundant metal element in the crust of zirconia ceramics is 8.3%. It mainly exists as aluminosilicate ore, as well as bauxite and cryolite. Alumina is a white amorphous powder with many variants, among which the most familiar ones are α-Al₂O₃ and β-Al₂O₃. The corundum that exists in nature belongs to α-Al₂O₃. Its hardness is second only to diamond, and it has a high melting point and is resistant to acids and alkalis. It is often used to make bearings, abrasives, and refractory materials. Such as corundum crucible, can withstand high temperature of 1800℃. Al₂O₃ has many colors due to different impurities. For example, those containing a small amount of Cr(III) are red, called rubies; those containing Fe(II), Fe(III) or Ti(IV) ar…