Unlock instant, AI-driven research and patent intelligence for your innovation.

ZrO2/Al2O3 nano-grade multiphase ceramic material and preparation method thereof

A composite ceramic and nanotechnology, applied in the field of nanocomposite ceramic materials and its preparation, can solve problems such as high cost, difficulty in ensuring product stability, and high equipment requirements, and achieve improved fracture toughness, good stability, and low preparation costs low effect

Inactive Publication Date: 2013-04-03
LANZHOU UNIVERSITY OF TECHNOLOGY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hot pressing sintering method requires high equipment, and the stability of the product is not easy to guarantee, and the cost is also high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • ZrO2/Al2O3 nano-grade multiphase ceramic material and preparation method thereof
  • ZrO2/Al2O3 nano-grade multiphase ceramic material and preparation method thereof
  • ZrO2/Al2O3 nano-grade multiphase ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention has prepared ZrO 2 A series of composite materials with a mass fraction of 10.00-50.00wt.%, and the obtained experimental samples were tested for density, X-ray diffraction, metallographic analysis and mechanical properties.

[0015] The highest microhardness of the invented composite material is 14.85GPa, and the highest fracture toughness is 8.0MPa / m 1 / 2 , Hihara Al 2 o 3 The fracture toughness of ceramics increased by 60.2%, which reached the expected goal.

[0016] Some performances of the present invention are as follows:

[0017] The hardness was measured on the HBRVU-187.5 Brockwell optical hardness tester, and the test conditions were: load 588N, loading duration 12s; fracture toughness was calculated according to the Vickers hardness value by indentation method.

[0018]

[0019] The above-mentioned performance indexes are all implemented in strict accordance with national standards.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
microhardnessaaaaaaaaaa
particle sizeaaaaaaaaaa
microhardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a ZrO2 / Al2O3 nano-grade multiphase ceramic material and a preparation method thereof. According to the invention, the nano-grade multiphase ceramic material comprises components of, by mass: 23.97-17.09% of Al, 71.00-50.63% of Fe2O3, and 5.03-32.28% of ZrO2. Raw material powders are blended and uniformly mixed; the mixture is compacted and shaped under a pressure of 20-60MPa by using a press machine; the material is then subject to an aluminothermic reaction under the protection of an argon atmosphere with a pressure of 3-7MPa, and a temperature of approximately 250-300 DEG C, such that the ZrO2 / Al2O3 nano-grade multiphase ceramic is obtained.

Description

technical field [0001] The invention relates to a nanocomposite ceramic material and a preparation method thereof. Background technique [0002] Al 2 o 3 It is a typical oxide ceramic material. Preparation of Al 2 o 3 There are many methods of composite ceramics, hot pressing sintering method is one of them can effectively improve Al 2 o 3 A preparation method for the mechanical properties of composite ceramics. The hot pressing sintering method can not only effectively improve the Al 2 o 3 The flexural strength of composite ceramics can also be significantly improved, and the fracture toughness of the material can be significantly improved. However, the hot pressing sintering method requires high equipment, and the stability of the product is not easy to guarantee, and the cost is also high. Contents of the invention [0003] The object of the present invention is to provide a kind of ZrO 2 / Al 2 o 3 Preparation method of nanocomposite ceramic material. [0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 喇培清刘雪梅卢学峰魏玉鹏
Owner LANZHOU UNIVERSITY OF TECHNOLOGY