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Colored ceramic and preparation method thereof

A technology of ceramics and colored metals, applied in the field of colored ceramics and its preparation, can solve problems such as difficult coloring, and achieve the effect of simple coloring method and uniform coloring

Inactive Publication Date: 2016-06-29
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect of difficult coloring in the existing preparation process of colored ceramics, to provide a method for preparing colored ceramics with simple coloring method and uniform color and the prepared colored ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0010] The invention provides a method for preparing colored ceramics, wherein the method comprises: contacting the ceramics with the melt of the colored metal and / or the vapor of the colored metal, and the temperature of the contact is above the melting point of the colored metal.

[0011] According to the present invention, the ceramics are sintered ceramics. The present invention has no special limitation on the types of ceramics, which may be commercially available or prepared by conventional ceramic preparation methods in the art. Since the preparation method of colored ceramics of the present invention is more suitable for the coloring of zirconia ceramics and / or alumina ceramics, especially for the coloring of zirconia ceramics, the ceramics of the present invention are preferably zirconia ceramics and / or alumina ceramics Ceramics, particularly preferably zirconia ceramics. For this reason, the present invention will particularly provide the preparation method of zircon...

preparation example 1

[0035] Weigh 20g of white zirconia powder and fill it into the mold, hold the pressure for about 40s under the pressure of 10MPa, unload the mold and take out the ceramic green body. The obtained ceramic green body is placed in a high-temperature furnace for sintering treatment, and the sintering treatment conditions include: holding at 600° C. for 1 hour, then holding at 1200° C. for 1.5 hours, and then holding at 1450° C. for 2 hours. The ceramics obtained after sintering are white zirconia ceramics.

preparation example 2

[0037] Weigh 20g of alumina powder and fill it into the mold, hold the pressure at 10MPa for about 35s, unload the mold and take out the ceramic body. The obtained ceramic green body is placed in a high-temperature furnace for sintering treatment, and the conditions of the sintering treatment include: holding at 600° C. for 1.5 hours, and then holding at 1550° C. for 3 hours. The ceramics obtained by sintering are white alumina ceramics.

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Abstract

The present invention discloses a colored ceramic preparation method, and the colored ceramic preparation method is characterized by comprising contacting a ceramic with a colored metal melt and / or a colored metal steam, wherein the contact temperature is higher than colored metal melting point temperature. The present invention also provides a colored ceramic prepared by the method, and the colored ceramic exhibits bright and uniform color.

Description

technical field [0001] The invention relates to a colored ceramic and a preparation method thereof, in particular to a dark gray to black ceramic and a preparation method thereof. Background technique [0002] Usually, the preparation of ordinary colored ceramics is obtained by adding pigments or colorants to ceramic bodies or glazes and firing them at high temperatures. Especially for zirconia ceramics and alumina ceramics, the sintering temperature is relatively high, generally at 1550-1650°C. At this temperature, most pigments or colorants will decompose and volatilize. Therefore, it is difficult to prepare colored ceramics with uniform color by simply adding colorants or colorants. Contents of the invention [0003] The object of the present invention is to overcome the defect of difficult coloring existing in the preparation process of the existing colored ceramics, and provide a method for preparing colored ceramics with a simple coloring method and uniform color a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/88
Inventor 周明帅林勇钊林信平
Owner BYD CO LTD