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Yttrium-stabilized zirconia refractory product with gradient functions

A technology of yttrium-stabilized zirconia and stabilized zirconia, applied in the field of refractory materials, can solve problems such as erosion and damage of zirconia products, and achieve the effects of preventing a large number of infiltration, improving service life and high operating temperature

Active Publication Date: 2014-07-23
SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, zirconia products are gradually eroded and damaged

Method used

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  • Yttrium-stabilized zirconia refractory product with gradient functions

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Experimental program
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Effect test

Embodiment 1

[0032] The proportion of zirconia raw materials is as follows: the mass percentage of stabilized zirconia particles with a particle size greater than 1 mm and less than or equal to 3 mm, a particle size greater than 0.5 mm and less than or equal to 1 mm, and a particle size greater than 0.15 mm and less than or equal to 0.5 mm accounted for 20% and 20% of the raw materials respectively , 20%; the mass percentage of stabilized zirconia fine powder with particle size greater than 30 μm and less than or equal to 150 μm in raw materials is 20%; the mass percentage of yttrium oxide stabilized zirconia fine powder with median diameter D50 greater than 0.5 μm and less than or equal to 30 μm in raw materials is 10%; the above stabilized zirconia is stabilizer Y 2 o 3 Fused yttria stabilized zirconia with a mass fraction of 13%. PurityY 2 o 3 ≥99.0%, yttrium oxide powder with a particle size greater than or equal to 0.005mm and less than or equal to 0.076mm accounts for 10% of the m...

Embodiment 2

[0034] The proportion of zirconia raw materials is as follows: the mass percentage of stabilized zirconia particles with a particle size greater than 1 mm and less than or equal to 3 mm, a particle size greater than 0.5 mm and less than or equal to 1 mm, and a particle size greater than 0.15 mm and less than or equal to 0.5 mm accounted for 20% and 20% of the raw materials respectively , 20%; the mass percentage of stabilized zirconia fine powder with particle size greater than 30 μm and less than or equal to 150 μm in raw materials is 20%; the mass percentage of yttrium oxide stabilized zirconia fine powder with median diameter D50 greater than 0.5 μm and less than or equal to 30 μm in raw materials is 15%; above stabilized zirconia is stabilizer Y 2 o 3 Fused yttria-stabilized zirconia with a mass fraction of 20%; purity Y 2 o 3 ≥99.0%, yttrium oxide powder with a particle size greater than or equal to 0.005mm and less than or equal to 0.076mm accounts for 5% of the raw ma...

Embodiment 3

[0036] The proportion of zirconia raw materials is as follows: the mass percentage of stabilized zirconia particles with a particle size greater than 1 mm and less than or equal to 3 mm, a particle size greater than 0.5 mm and less than or equal to 1 mm, and a particle size greater than 0.15 mm and less than or equal to 0.5 mm accounted for 40% and 20% of the raw materials respectively , 10%; the mass percentage of stabilized zirconia fine powder with a particle size greater than 30 μm and less than or equal to 150 μm in the raw material is 10%; the mass percentage of yttrium oxide stabilized zirconia fine powder with a median diameter D50 greater than 0.5 μm and less than or equal to 30 μm in the raw material is 17%; the above stabilized zirconia is stabilizer Y 2 o 3 Fused yttria-stabilized zirconia with a mass fraction of 20%; purity Y 2 o 3 ≥99.0%, yttrium oxide powder with a particle size greater than or equal to 0.005mm and less than or equal to 0.076mm accounts for 3%...

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Abstract

The invention belongs to the field of refractory materials, and provides a yttrium-stabilized zirconia refractory product with gradient functions. According to the provided yttrium-stabilized zirconia refractory product, raw materials comprise fused yttrium-oxide-stabilized zirconia particles, fused yttrium-oxide-stabilized zirconia fine powder, fused yttrium-oxide-stabilized zirconia micro powder, and an additional bonding agent. In fused yttrium-oxide-stabilized zirconia particles, fused yttrium-oxide-stabilized zirconia fine powder and fused yttrium-oxide-stabilized zirconia micro powder, yttrium oxide is taken as a stabilizing agent, and the stabilizing agent yttrium oxide accounts for 13%-20% by mass respectively of the fused zirconia particles, fine powder and micro powder. The raw materials of the yttrium oxide refractory product also comprise yttrium oxide powder, and yttrium oxide powder accounts for 3%-10% by mass of the zirconia refractory product raw materials. The service life of the zirconia product applied to sapphire crystal-growing furnaces is effectively prolonged and sapphire production quality is improved.

Description

technical field [0001] The invention belongs to the field of refractory materials, and mainly relates to a gradient function yttrium-stabilized zirconia refractory product. Background technique [0002] Zirconia is an important refractory raw material with a melting point as high as 2715°C and excellent physical and chemical properties. High-purity zirconia refractory products usually refer to refractory products with a zirconia (including stabilizer) content of more than 98%. It uses zirconia particles or zirconia hollow spheres, zirconia fine powder, stabilizers, binders, etc. as raw materials. The refractory products of the desired shape are prepared by casting, pouring, machine pressing, isostatic pressing, ramming and other molding methods. High-purity zirconia refractory has the advantages of high service temperature (maximum service temperature 2300-2400 ℃), not easy to decompose at high temperature, and good chemical stability. It is a high-performance refractory pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 孙红刚闫双志谭清华王刚李鹏涛冯志源耿可明
Owner SINOSTEEL LUOYANG INST OF REFRACTORIES RES
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