Open AccessThe influence investigation of moisture and pressure on the compressibility of mass from zirconia stabilized by yttrium oxide and the properties of samples from it
Author(s) -
В. В. Примаченко,
И. Г. Шулик,
T. G. Gal’chenko,
E. B. Protsak,
L. V. Belik
Publication year - 2018
Publication title -
naukovì doslìdžennâ z vognetrivìv ta tehnìčnoï keramìki. zbìrnik naukovih pracʹ
Language(s) - English
Resource type - Journals
ISSN - 2663-3566
DOI - 10.35857/2663-3566.118.03
Subject(s) - cubic zirconia , yttrium , porosity , materials science , moisture , water content , compressibility , oxide , bulk density , pressing , mass fraction , composite material , mineralogy , metallurgy , chemistry , ceramic , thermodynamics , geology , geotechnical engineering , physics , soil water , soil science
The compressibility of mass with a particular composition — from fused zirconia, stabilized by ~ 10 % yttrium oxide, as well as the properties of samples from it depending on its moisture (2.5; 3.0; 3.5; 4.0; 4.5 %) and specific pressure (50, 75, 100 N/mm2) have been investigated. The optimum moisture content of the forming mass (3.5—4.0 %) and pressure (100 N/mm2) were established, providing fresh-formed samples with the maximum possible for the given mass apparent density of 4.78—4.79 g/cm3, dried — with an apparent density of 4.71—4.72 g/cm3 and with an apparent density, open porosity and cold crushing strength of the fired samples respectively 4.66—4.67 g/cm3, 21.0—21.4 %, 38.6—39.0 N/mm2. As a result of the carried out studies, the production technology of TsIS-1T brand products from fused zirconia, stabilized by ~ 10 % yttrium oxide, by the method of semi-dry pressing was improved. This technology ensures a reduction in open porosity of these products by ~ 2—3 % and an increase in their cold crushing strength by ~ 11.4 % (rel.) The use of these products in single crystal growing plants will provide their higher durability in service and the operation duration of these high temperature plants.