Heterogeneous ceramic material containing silicon phase quatermary system zicronium oxide

Abstract

The present invention discloses a four-component system zirconium oxide complex phase ceramic material containing silicon phase, its formula is characterized by that on the four-component system formula containing stable 2-3 mol% of yttrium oxide, 0.5-5 mol% of magnesium oxide, 4-15 vol% of aluminium oxide and zirconium oxide the 0.4-1.0 wt% of silicon oxide component in the form of mullite (3Al2O3.2SiO2) can be compounded, and then they are undergone the processes of ball-grinding, granularing, forming and firing so as to obtain the invented complex phase ceramic material with uniform structure and good mechanical property. It can be used for preparing lining of pump. valve and grinding machine and its related component.

Description

technical field [0001] The invention relates to a silicon phase-containing quaternary zirconia composite phase ceramic material. It belongs to structural ceramics. Background technique [0002] Due to their excellent mechanical properties, zirconia-based ceramic materials have been widely used in the preparation of various structural components, such as linings of pumps, valves, grinding equipment, and other vulnerable parts. On the basis of 2-3mol% yttria-stabilized zirconia, adding 0.5-5mol% magnesium oxide and 4-15vol% alumina can form Y 2 -O 3 -ZrO 2 -MgO-Al 2 o 3 Quaternary zirconia composite ceramics, the quaternary zirconia system not only further improves the mechanical properties of the single yttria stabilized zirconia system, but also achieves the size of the granulated secondary particles in a wider range through particle size matching And shape control, so that the formability of components can be improved, and the firing shrinka...

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Problems solved by technology

[0003] Although the increase of the components in the quaternary system improves the process and mechanical properties of the material or component at the same time, it increases the sensitivity of the material firing process to temperature, and the inaccurate control of the firing system often forms an uneven microstructure. , resulting in instability of the mechanical properties of the material