{"title":"Effect of ultrafine powders obtained by mechanical grinding on the density of ceramic material made of aluminum and zirconium oxides","authors":"P. M. Pletnev, E. S. Semantsova","doi":"10.17073/1683-4518-2023-8-28-33","DOIUrl":null,"url":null,"abstract":"The results of grinding powdered, solid zirconium and aluminum oxides in various grinding units: ball, planetary and bead mills are presented. The grinding materials were: partially yttrium-stabilized zirconium dioxide of the PSZ-5,5Y brand (USA) and alumina with an alpha phase content of more than 99,0 wt. % of the brand Almatis CT 3000 GS (Germany). It is shown that in order to obtain high-purity, ultrafine oxide powders, it is advisable to use bead mills with zirconium dioxide grinding balls with dimensions of 0,6‒0,8 mm, with a ratio of M : W, as 1 : 4 and a specific grinding energy of 0,6‒0,8 kW. Achieving the ultrafine state of the initial oxide powders activates their solid-phase sintering, increases the density of ceramic materials: for aluminum oxide from 3,50‒3,78 g/cm3, for zirconium oxide from 5,40‒5,89 g/cm3.","PeriodicalId":19463,"journal":{"name":"NOVYE OGNEUPORY (NEW REFRACTORIES)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"NOVYE OGNEUPORY (NEW REFRACTORIES)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.17073/1683-4518-2023-8-28-33","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The results of grinding powdered, solid zirconium and aluminum oxides in various grinding units: ball, planetary and bead mills are presented. The grinding materials were: partially yttrium-stabilized zirconium dioxide of the PSZ-5,5Y brand (USA) and alumina with an alpha phase content of more than 99,0 wt. % of the brand Almatis CT 3000 GS (Germany). It is shown that in order to obtain high-purity, ultrafine oxide powders, it is advisable to use bead mills with zirconium dioxide grinding balls with dimensions of 0,6‒0,8 mm, with a ratio of M : W, as 1 : 4 and a specific grinding energy of 0,6‒0,8 kW. Achieving the ultrafine state of the initial oxide powders activates their solid-phase sintering, increases the density of ceramic materials: for aluminum oxide from 3,50‒3,78 g/cm3, for zirconium oxide from 5,40‒5,89 g/cm3.