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Method for manufacturing high-tenacity ceramics through tricalcium phosphate

A technology of tricalcium phosphate and high toughness, applied in the field of ceramic industry, can solve the problems of product performance improvement, reduction of high-quality raw materials, high firing temperature, etc., to reduce the generation of microcracks, change physical and chemical properties, and improve impact resistance The effect of toughness

Inactive Publication Date: 2014-11-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the current problems in the ceramic industry, such as high firing temperature, decreasing high-quality raw materials, and product performance to be improved, the purpose of the present invention is to provide a method for preparing high-toughness ceramics by using tricalcium phosphate, which can improve the quality of ceramic products. toughness

Method used

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  • Method for manufacturing high-tenacity ceramics through tricalcium phosphate
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  • Method for manufacturing high-tenacity ceramics through tricalcium phosphate

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method utilizing tricalcium phosphate to prepare high-toughness ceramics, comprising the steps of:

[0033] (1) In terms of weight percentage, 15% of tricalcium phosphate and 85% of ceramic blank (see Table 1 for chemical composition) are mixed, and the mixed grinding is uniformly obtained in the mode of wet ball milling; in wet ball milling, balls, The mass ratio of mixed material and water is: grinding ball: mixed material: water=1.2:1:0.8, and the ball milling time is 2h;

[0034] (2) Pass the slurry in step (1) through a 100-mesh sieve, dry it at 100°C for 24 hours, grind it into powder, pass it through a 100-mesh sieve, dry-press, hold the pressure at 15 MPa for 1 minute to obtain a ceramic green body;

[0035] (3) firing the ceramic green body in a kiln, controlling the firing temperature to be 1180° C., and holding time for 60 minutes to obtain a ceramic sample;

[0036] Table 1 Ceramic blank chemical composition (wt%)

[0037] components

SiO 2 ...

Embodiment 2

[0046] A method utilizing tricalcium phosphate to prepare high-toughness ceramics, comprising the steps of:

[0047] (1) In terms of weight percentage, mix 10% of tricalcium phosphate and 90% of ceramic blank (see Table 2 for chemical composition), and mix and grind uniformly to obtain slurry in the mode of wet ball milling; in wet ball milling, balls, The mass ratio of mixed material and water is: grinding ball: mixed material: water=1.2:1:0.8, and the ball milling time is 2h;

[0048] (2) Pass the slurry in step (1) through a 100-mesh sieve, dry it at 100°C for 24 hours, grind it into powder, pass it through a 100-mesh sieve, dry-press, hold the pressure at 15 MPa for 1 minute to obtain a ceramic green body;

[0049] (3) firing the ceramic green body in a kiln, controlling the firing temperature to be 1200°C, and holding time for 70 minutes to obtain a ceramic sample;

[0050] Table 2 Ceramic blank chemical composition (wt%)

[0051] components

[0052] The sinte...

Embodiment 3

[0054] A method utilizing tricalcium phosphate to prepare high-toughness ceramics, comprising the steps of:

[0055] (1) In terms of weight percentage, 7% of tricalcium phosphate and 93% of ceramic blank (see Table 3 for chemical composition) are mixed, and the slurry is uniformly mixed and ground in the mode of wet ball milling; in wet ball milling, balls, The mass ratio of mixed material and water is: grinding ball: mixed material: water=1.2:1:0.8, and the ball milling time is 2h;

[0056] (2) Pass the slurry in step (1) through a 100-mesh sieve, dry it at 100°C for 24 hours, grind it into powder, pass it through a 100-mesh sieve, dry-press, hold the pressure at 15 MPa for 1 minute to obtain a ceramic green body;

[0057] (3) firing the ceramic green body in a kiln, controlling the firing temperature to be 1240° C., and holding time for 80 minutes to obtain a ceramic sample;

[0058] Table 3 Ceramic blank chemical composition (wt%)

[0059] components

[0060] Th...

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Abstract

The invention belongs to the field of ceramic industry, and discloses a method for manufacturing high-tenacity ceramics through tricalcium phosphate. The method comprises the following steps that, by weight, 5%-15% of the tricalcium phosphate and 85-95% of ceramic blanks are evenly smashed, mixed, milled in the mode of wet ball milling, dried and ground into powder, green ceramic bodies are manufactured through dry pressing molding and the green ceramic bodies are sintered in a kiln to form the high-tenacity ceramics. According to the high-tenacity ceramic samples manufactured through the method, needle-shaped mullite and anorthite serve as the main crystalline phase, cristobalite serves as the auxiliary crystalline phase, and a Si-O system and P-O system composite glass phase serves as the binding phase. Through the structure, thermal expansion coefficients between the crystalline phases and between the crystalline phases and the glass phase are better matched, micro-cracks can be effectively reduced in the ceramic sintering process, and the tenacity of ceramic products is greatly improved.

Description

technical field [0001] The invention belongs to the field of ceramic industry and relates to the preparation of silicate industrial ceramics, in particular to a method for preparing high-toughness ceramics by using tricalcium phosphate. Background technique [0002] my country is a big country in ceramics production, and the traditional ceramics are very developed, and its output has ranked first in the world for many years. At present, the challenges faced by the ceramic industry mainly include: ceramic production consumes a lot of energy; products have low impact strength and poor toughness; and high-quality raw materials are decreasing day by day. In the traditional clay-quartz-feldspar system, the porcelain body is mainly made of cristobalite (α-SiO 2 ), mullite (Al 6 Si 2 o 13 ) as the main crystal phase, and Si-O glass as the binder phase. Among them, the particle size of cristobalite is generally between a few microns and more than ten microns, and mullite is mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/22C04B35/622
Inventor 张志杰张捷刘平安钟明峰
Owner SOUTH CHINA UNIV OF TECH
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