Method for preparing TiB2 and CuO codoped 3Y-TZP nano composite ceramics by microwave sintering at low temperature

A 3Y-TZP and microwave sintering technology, which is applied in the field of preparing 3Y-TZP nano-composite ceramics by microwave sintering, can solve the problems of low strength and fracture toughness, and high sintering temperature of TZP ceramics, and achieve high product strength and fracture toughness, and simple preparation methods , the effect of low energy consumption

Inactive Publication Date: 2014-07-23
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a kind of microwave sintering low temperature preparation TiB 2 The method of co-dopi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] nanoTiB 2 :CuO:3Y-TZP is the ratio of 5:0.5:94.5 to weigh the raw materials, carry out liquid phase dispersion and ultrasonic dispersion for 40min respectively, then pour the uniformly mixed suspension into the ball mill tank, use cemented carbide balls (material ball mass The ratio is 1:10) to carry out continuous mechanical ball milling for 50 hours, and the slurry mixed by ball milling is quickly poured into a stainless steel powder pan, and put into an electric vacuum drying oven (XMTD-1000 type), at a set temperature (the drying temperature is Continuously dry at 100°C), pass the dried composite powder through a 100-mesh steel sieve to obtain TiB 2 3Y-TZP nanopowder co-doped with CuO. The nano-powder is firstly formed by dry pressing at 60MPa, and then isostatically pressed at 200MPa. The MW-L0316V microwave high-temperature sintering furnace was used for sintering, in which the microwave source operating frequency was 2.45 GHz, the power was continuously adjusta...

Embodiment 2

[0022] nanoTiB 2 :CuO:3Y-TZP is the ratio of 15:0.5:84.5 Weigh the raw materials, carry out liquid phase dispersion and ultrasonic dispersion respectively for 40min, then pour the uniformly mixed suspension into the ball mill tank, use cemented carbide balls (material ball mass The ratio is 1:10) to carry out continuous mechanical ball milling for 50 hours, and the slurry mixed by ball milling is quickly poured into a stainless steel powder pan, and put into an electric vacuum drying oven (XMTD-1000 type), at a set temperature (the drying temperature is Continuously dry at 100°C), pass the dried composite powder through a 100-mesh steel sieve to obtain TiB 23Y-TZP nanopowder co-doped with CuO. The nano-powder is firstly formed by dry pressing at 80MPa, and then isostatically pressed at 200MPa. The MW-L0316V microwave high-temperature sintering furnace was used for sintering, in which the operating frequency of the microwave source was 2.45 GHz, the power was continuously adj...

Embodiment 3

[0024] nanoTiB 2 :CuO:3Y-TZP is the ratio of 25:1:74 to weigh the raw materials, carry out liquid phase dispersion and ultrasonic dispersion for 40min respectively, then pour the uniformly mixed suspension into the ball mill tank, use cemented carbide balls (material ball mass The ratio is 1:10) to carry out continuous mechanical ball milling for 50 hours, and the slurry mixed by ball milling is quickly poured into a stainless steel powder pan, and put into an electric vacuum drying oven (XMTD-1000 type), at a set temperature (the drying temperature is Continuously dry at 100°C), pass the dried composite powder through a 100-mesh steel sieve to obtain TiB 2 3Y-TZP nanopowder co-doped with CuO. The nano-powder is firstly formed by dry pressing at 80MPa, and then isostatically pressed at 250MPa. The MW-L0316V microwave high-temperature sintering furnace is used for sintering, in which the operating frequency of the microwave source is 2.45 GHz, the power is continuously adjust...

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Abstract

The invention relates to a method for preparing TiB2 and CuO codoped 3Y-TZP nano composite ceramics by microwave sintering at a low temperature, which comprises the following steps: carrying out liquid phase dispersion and ultrasonic dispersion on TiB2, CuO and 3Y-TZP nano powder in a certain proportion for 40 min; then, pouring uniformly mixed suspension into a ball-milling jar, and carrying out continuous mechanical ball milling on the suspension for 50 h by using a cemented carbide ball; rapidly pouring the ball-milled and mixed slurry into a stainless steel powder plate; putting the obtained product into an electrothermal vacuum drying oven to carry out continuous drying; passing the dried composite powder through a 100-mesh steel sieve so as to obtain TiB2 and CuO codoped3Y-TZP nano composite powder; carrying out dry pressing on the nano composite powder; carrying out isostatic pressing on the nano composite powder; and sintering the obtained product by using a MW-L0316V microwave high-temperature sintering furnace so as to obtain a 3Y-TZP nano composite ceramic. The method disclosed by the invention has the advantages that the preparation method is simple, low in energy consumption and high in strength and fracture toughness of products; obtained nano composite ceramics are suitable for industrialized production, more and more taken seriously in the industries of electronics, machinery, petroleum, chemical engineering and the like, and have a broad application prospect.

Description

technical field [0001] The invention relates to a method for preparing 3Y-TZP nanocomposite ceramics by microwave sintering, in particular to a method for preparing TiB by microwave sintering at low temperature 2 A method for co-doping 3Y-TZP nanocomposite ceramics with CuO. Background technique [0002] Y 2 o 3 Stable Tetragonal ZrO 2 Polycrystalline (3Y-TZP) has excellent flexural strength and fracture toughness, and is currently the most commonly used type of ZrO 2 Toughened ceramic materials, which are increasingly valued in electronics, machinery, petroleum, chemical and other industries, have broad application prospects. However, the hardness and strength of 3Y-TZP are not high. If it is used for a long time at 100-400°C, it is prone to low-temperature aging, resulting in a sharp decline in performance; and the hot-press sintering of 3Y-TZP ceramics cannot produce complex-shaped parts, and the vacuum sintering temperature is high. (Generally 1400-1600 ℃) results i...

Claims

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Application Information

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IPC IPC(8): C04B35/488C04B35/622
Inventor 罗军明徐吉林
Owner NANCHANG HANGKONG UNIVERSITY
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