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Preparation method of yellow zirconium oxide ceramic

A technology of zirconia ceramics and zirconia powder, which is applied in the field of preparation of yellow zirconia ceramics, can solve the problem of difficulty in preparing brightly colored zirconia ceramics and the like, achieve enhanced color rendering effect, reduce high temperature volatilization, and improve high temperature stability Effect

Inactive Publication Date: 2018-09-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of traditional colored ceramics is generally obtained by adding pigment or colorant to the ceramic body or glaze, and firing at high temperature (generally lower than 1300°C), but the sintering temperature of zirconia ceramics is generally above 1400°C , as most of the pigments or colorants that change the color of ceramics will decompose and volatilize at this temperature, therefore, it is difficult to make bright colored zirconia ceramics by using traditional ceramic preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the yellow zirconia ceramics of the present invention is specifically implemented according to the following steps:

[0020] Step 1, mixing yttrium-stabilized zirconia powder with vanadium oxide or ammonium vanadate in a ball mill, adding a dispersant for ball milling, mixing evenly and drying, and then grinding through a 40-mesh sieve to obtain a yellow zirconia ceramic powder; Among them, the yttrium-stabilized zirconia powder is tetragonal zirconia powder stabilized by 3% mol yttrium oxide; the mass ratio of yttrium-stabilized zirconia powder, vanadium oxide or ammonium vanadate and dispersant is 100:0.1~ 2:1; the ball mill tank and the ball stone used in the ball mill are all made of zirconia; the time for ball milling after adding the dispersant in step 1 is 24h, the solvent is deionized water during ball milling, and the zirconia powder is used for ball milling The mass ratio of the mixture of vanadium oxide or ammonium vanadate and dispe...

Embodiment 1

[0025] Weigh 100g of yttrium stabilized zirconia material, 0.1g of vanadium oxide, and 1g of polyethylene glycol 2000 into the zirconia ball mill jar, and add zirconia ball stone and deionized water, ball milled for 24 hours, poured out the slurry, dried it and ground it through a 40-mesh sieve to obtain a yellow zirconia ceramic powder. Put it into a muffle furnace and calcinate at 1180°C for 2 hours to obtain a vanadium-zirconium solid solution; then crush and granulate the vanadium-zirconium solid solution, and use dry pressing to obtain a yellow zirconia biscuit, and finally sinter the biscuit at a high temperature of 1500°C 5h to obtain yellow zirconia ceramics.

Embodiment 2

[0027] Weigh 100g of yttrium-stabilized zirconia material, 2g of vanadium oxide, and 1g of polyethylene glycol 2000 into the zirconia ball mill jar, and add zirconia ball stone and deionized water according to the material: ball: water mass ratio of 1:2.5:0.5 After ball milling for 24 hours, the slurry was poured out, dried and ground through a 40-mesh sieve to obtain yellow zirconia ceramic powder. Put it into a muffle furnace and calcinate at 1180°C for 2 hours to obtain a vanadium-zirconium solid solution; then crush and granulate the vanadium-zirconium solid solution, and use dry pressing to obtain a yellow zirconia biscuit, and finally sinter the biscuit at a high temperature of 1500°C 5h to obtain yellow zirconia ceramics.

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Abstract

The invention discloses a preparation method of yellow zirconium oxide ceramic. The preparation method comprises the following specific steps: 1, mixing yttrium-stabilized zirconium oxide powder withvanadium oxide or ammonium vanadate in a ball mill, adding a dispersing agent for ball milling, uniformly mixing, drying, and then grinding to obtain yellow zirconium oxide ceramic powder; 2, pre-calcining the prepared yellow zirconium oxide powder in a muffle furnace at 1180 DEG C for 2-5 hours, and then cooling to room temperature along with the furnace to obtain a vanadium-zirconium solid solution; 3, grinding and pulverizing the prepared vanadium-zirconium solid solution, granulating, and then performing dry pressing or cold isostatic pressing to obtain a yellow zirconium oxide blank; 4, sintering the prepared zirconium oxide ceramic blank at a high temperature to obtain the yellow zirconium oxide ceramic. According to the preparation method of the yellow zirconium oxide ceramic, a coloring agent vanadium oxide or ammonium vanadate and the yttrium-stabilized zirconium oxide are pre-calcined to form the vanadium-zirconium solid solution, so that the high-temperature stability of thevanadium oxide is improved and successful preparation of the yellow zirconium oxide ceramic is achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of ceramics, and relates to a preparation method of yellow zirconia ceramics. Background technique [0002] As a traditional structural ceramic, zirconia ceramics have been gradually becoming popular in artificial gemstones, watch cases, The new favorite of high-end decorative materials such as watch chains and mobile phone cases. Zirconia ceramics sintered by traditional methods are ivory white, and a single color is difficult to meet people's increasing demand for zirconia ceramic decorative materials. Therefore, the research and development of colored zirconia ceramics has broad market prospects. The preparation of traditional colored ceramics is generally obtained by adding pigment or colorant to the ceramic body or glaze, and firing at high temperature (generally lower than 1300°C), but the sintering temperature of zirconia ceramics is generally above 1400°C , as most of the pi...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/622C04B35/626
CPCC04B35/48C04B35/622C04B35/62675C04B2235/3239C04B2235/9661
Inventor 何选盟刘辉李军奇庞凌燕刘俊莉焦冰玉方厚兰
Owner SHAANXI UNIV OF SCI & TECH