ZrO_2分散MGO-Al_2O_3系セラミックスの作製とその性質(第2報) : ZrO_2含有量の影響

概要

論文の詳細を見る
Using Mg(OH)_2 powder, Al-sec-butoxide and Zr-n-butoxide as the raw materials, ZrO_2 dispersed MgO-Al_2O_3 ceramics were prepared by calcining at 1000°C for 2h and sintering at 1600°C for 1h. The relationship between the properties and the content of ZrO_2 was investigated. The relative density of the sintered bodies was improved when ZrO_2 content exceeded 1.4 vol%. The bending strength increased with increase in the ZrO_2 content above 6.6 vol%, while the fracture toughness improved by 12.5 to 15.1 vol% ZrO_2. The sinterabilty of spinel between 1200 and 1400°C was also enhanced by the ZrO_2 addition. The bending strength was improved with increase in the content of tetragonal-ZrO_2 transformed to monoclinic-ZrO_2 by fracture. The fracture toughness was improved with the total content of tetragonal-ZrO_2 in the matrix.
社団法人日本セラミックス協会の論文
1995-08-01