Composition for preparing zirconia ceramics and ceramics

A technology of composition and zirconia, which is applied in the field of preparation of zirconia ceramics, can solve the problems that colored zirconia ceramics cannot be produced, and achieve the effects of bright colors, high hardness and bending strength

Active Publication Date: 2010-01-13
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the inability to prepare colored zirconia ceramics in the prior art, and provide a composition capable of preparing colored zirconia ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This example is used to illustrate the composition and ceramics for preparing zirconia ceramics provided by the present invention.

[0025] Composition of the composition (total weight is 100 grams):

[0026] Zirconia: 95 grams

[0027] Sintering aid: 2.7 grams (including 0.5 grams of magnesium oxide, 0.7 grams of silicon oxide, and 1.5 grams of aluminum oxide)

[0028] Pigment: 2.3 grams (including 1.2 grams of dicobalt trioxide, 0.3 grams of zinc oxide, 0.6 grams of barium carbonate, and 0.2 grams of calcium fluoride)

[0029] The average particle diameter of the composition was 10 microns.

[0030] Add 200 milliliters of absolute ethanol to the above-mentioned composition, and then use a ball mill (Xianyang Jinhong General Machinery Co., Ltd., KQM-X4) to mix for 6 hours. After taking it out, place it in an oven at 100°C and dry it for 6 hours. The obtained powder was crushed with a porcelain mortar (Shenzhen Sanli Experimental Instrument Co., Ltd., 120 mm in diam...

Embodiment 2

[0032] This example is used to illustrate the composition and ceramics for preparing zirconia ceramics provided by the present invention.

[0033] Prepare zirconia ceramics in the same manner as in Example 1, except that the composition consists of (total weight is 100 grams):

[0034] Zirconia: 93 grams; Cobalt trioxide: 1.37 grams; Magnesium oxide: 0.43 grams; Aluminum oxide: 2.04 grams; Silicon oxide: 0.94 grams; Calcium oxide: 0.4 grams; Zinc oxide: 0.55 grams; Barium carbonate: 0.83 grams; Calcium Fluoride: 0.44 g. The average particle diameter of the composition was 2 microns.

[0035] And the sintering temperature is 1550° C., and the sintering time is 2 hours.

[0036] The prepared zirconia ceramics are designated as A2.

Embodiment 3

[0038] This example is used to illustrate the composition and ceramics for preparing zirconia ceramics provided by the present invention.

[0039] Prepare zirconia ceramics in the same manner as in Example 1, except that the composition consists of (total weight is 100 grams):

[0040] Zirconia: 93 grams

[0041] 3 grams of sintering aid (including 0.9 grams of alumina, 0.6 grams of silicon oxide, 0.3 grams of calcium oxide, and 1.2 grams of cerium oxide)

[0042] Pigment: 4 grams (including 2 grams of dicobalt trioxide, 1.2 grams of barium carbonate, and 0.8 grams of calcium fluoride)

[0043] The average particle diameter of the composition was 5 microns.

[0044] And the sintering temperature is 1600° C., and the sintering time is 2 hours.

[0045] The prepared zirconia ceramics are designated as A3.

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Abstract

The invention discloses a composition for preparing zirconia ceramics, which comprises zirconia, a sintering auxiliary agent and a pigment, wherein the pigment contains cobalt oxide. The invention also provides ceramics, which is prepared by die forming the composition provided by the invention and then sintering the composition. The ceramics prepared from the composition provided by the invention has bright color after being polished and high hardness and bending strength.

Description

technical field [0001] The present invention relates to a composition for preparing zirconia ceramics and ceramics produced from the composition. Background technique [0002] Zirconia ceramics have the characteristics of high strength, high hardness, good toughness, corrosion resistance, high temperature resistance, and good formability, and are widely used in various fields, such as cutting tools, molds, valves, refractory materials, oxygen sensors, solid fuel cells, etc. In recent years, with the continuous improvement of people's demand for decorations, colored zirconia ceramics have become the new favorite of high-end decorative materials due to their excellent mechanical properties, bright colors, metallic luster and non-allergic effects, such as mobile phones, watch chains, bracelet etc. [0003] The production process of zirconia ceramics is generally to mold the composition containing zirconia and sintering aids, and then sinter at a high temperature of 1500-1750 °...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48
Inventor 舒剑向其军胡利娟
Owner BYD CO LTD
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