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Composite high-strength zirconia ceramic material and preparation method thereof

A zirconia ceramic and zirconia technology are applied in the field of composite high-strength zirconia ceramic materials and their preparation, which can solve problems such as single performance, achieve good mechanical strength, and improve compressive strength and bending strength.

Inactive Publication Date: 2016-08-03
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The performance of ceramic materials composed of a single zirconia is relatively single, which cannot be used in many fields. In order to effectively improve its performance, it is necessary to optimize its ceramic composition and improve the comprehensive performance of zirconia ceramic materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Step 1: 40 parts by weight of zirconia, 5 parts of silicon carbide, 10 parts of tungsten carbide, 7 parts of boron nitride, 3 parts of zirconium boride, 2 parts of molybdenum boride, 6 parts of tungsten silicide, and 2 parts of barium silicide , 4 parts of vanadium silicide and 3 parts of tantalum boride are mechanically ball milled in a ball mill, the ball mill rotating speed is 300rpm, the ball-to-material ratio in the ball mill is 30:1, and the ball milling time is 4h;

[0037] Step 2: After ball milling, sinter the ceramic material at a high temperature in a sintering furnace at a heating rate of 70°C / min, first raise the temperature to 950°C, keep the temperature constant for 2 hours, then raise the temperature to 1350°C, and keep the temperature constant Change for 3 hours, lower to room temperature, and prepare a composite high-strength zirconia ceramic material.

[0038] The compressive strength of the zirconia ceramic material in Example 1 is 208MPa, and the be...

Embodiment 2

[0040] Step 1: 20 parts by weight of zirconia, 12 parts of silicon carbide, 4 parts of tungsten carbide, 3 parts of boron nitride, 7 parts of zirconium boride, 7 parts of molybdenum boride, 2 parts of tungsten silicide, and 6 parts of barium silicide , 2 parts of vanadium silicide, and 6 parts of tantalum boride are mechanically ball milled in a ball mill, the ball mill rotating speed is 100rpm, the ball-to-material ratio in the ball mill is 15:1, and the ball milling time is 1h;

[0041] Step 2: After ball milling, sinter the ceramic material at a high temperature in a sintering furnace at a heating rate of 30°C / min, first raise the temperature to 900°C, keep the temperature constant for 2 hours, then raise the temperature to 1250°C, and keep the temperature constant Change for 3 hours, lower to room temperature, and prepare a composite high-strength zirconia ceramic material.

[0042] The compressive strength of the zirconia ceramic material in Example 2 is 212 MPa, and the ...

Embodiment 3

[0044] Step 1: 35 parts by weight of zirconia, 10 parts of silicon carbide, 6 parts of tungsten carbide, 6 parts of boron nitride, 4 parts of zirconium boride, 3 parts of molybdenum boride, 3 parts of tungsten silicide, and 5 parts of barium silicide , 4 parts of vanadium silicide and 5 parts of tantalum boride are mechanically ball milled in a ball mill, the ball mill rotating speed is 300rpm, the ball-material ratio in the ball mill is 30:1, and the ball milling time is 4h;

[0045] Step 2: After ball milling, sinter the ceramic material at a high temperature in a sintering furnace at a heating rate of 70°C / min, first raise the temperature to 950°C, keep the temperature constant for 2 hours, then raise the temperature to 1350°C, and keep the temperature constant Change for 3 hours, lower to room temperature, and prepare a composite high-strength zirconia ceramic material.

[0046] The compressive strength of the zirconia ceramic material in Example 3 is 226MPa, and the bendi...

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Abstract

The invention discloses a composite high-strength zirconia ceramic material and a preparation method thereof.The ceramic material comprises 20-40 parts of zirconium oxide, 5-12 parts of silicon carbide, 4-10 parts of tungsten carbide, 3-7 parts of boron nitride, 3-7 parts of zirconium boride, 2-7 parts of molybdenum boride, 2-6 parts of tungsten silicide, 2-6 parts of barium silicide, 2-4 parts of vanadium silicide and 3-6 parts of tantalum boride.The preparation method includes the following steps that 1, all ingredients are subjected to mechanical milling in a ball mill; 2, after ball milling is conducted, the ceramic material is subjected to high-temperature sintering in a sintering furnace, the temperature raising rate is 30-70 DDG C / min, the temperature is raised to 900-950 DEG C in the first place, the temperature is maintained unchanged for 2 hours, then the temperature is raised to 1250-1350 DEG C, the temperature is maintained unchanged for 3 hours and then lowered to the room temperature, and the composite high-strength zirconia ceramic material is prepared.

Description

technical field [0001] The invention belongs to the field of composite ceramic materials, and relates to a composite high-strength zirconia ceramic material and a preparation method thereof. Background technique [0002] In terms of structural ceramics, zirconia ceramics are widely used in the field of structural ceramics due to their high toughness, high flexural strength, high wear resistance, excellent heat insulation performance, and thermal expansion coefficient close to steel. Mainly include: Y-TZP grinding balls, dispersing and grinding media, nozzles, ball valve seats, zirconia molds, micro fan shafts, optical fiber pins, optical fiber sleeves, drawing dies and cutting tools, wear-resistant knives, clothing buttons, Watch cases and straps, bracelets and pendants, ball bearings, golf light bats and other room temperature wear-resistant parts, etc. [0003] The performance of the ceramic material composed of a single zirconia is relatively single, which cannot be used...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/622C04B2235/3804C04B2235/3813C04B2235/3826C04B2235/3847C04B2235/386C04B2235/3891
Inventor 刘莉王爽邱晶
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS
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