Fe-Cr base composite ceramic material and preparation method thereof

A composite ceramic, fe-cr technology, applied in the field of ceramic materials, can solve the problems of high brittleness, low toughness, and difficult cold working, etc., and achieve the effect of good machinability, simple process flow, and low expansion coefficient

Active Publication Date: 2020-01-17
冷水江市佳晨电子陶瓷有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional single-phase ceramic materials, such as high-alumina ceramics and zirconia ceramics, have low toughness and high brittleness, which limits their application in engineering. At the same time, because such ceramic materials are not easy to be cold-worked, they are not easy to be processed into complex geometric shapes. structure, or its processing costs are very expensive, which limits the promotion of single-phase ceramic materials

Method used

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  • Fe-Cr base composite ceramic material and preparation method thereof
  • Fe-Cr base composite ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the mass percentage, weigh 45% Fe powder, 35% Cr 2 o 3 Powder, 20% Al 2 o 3 powder, in which Fe powder has a purity of 99.9%, a particle size of 60nm, and Cr 2 o 3 The purity of the powder is 99.9%, the particle size is 50nm, Al 2 o 3 The purity of the powder is 95.0%, and the particle size is 50nm.

[0018] Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Put the powder into a ball mill tank lined with polyurethane, add agate balls with a particle size of 20mm according to the ball-to-material ratio of 2, add Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Deionized water with 0.8% of the total powder mass, the loading capacity of the ball milling tank is 75%, the ball milling speed is controlled to be 30 rpm, and ball milling is carried out for 30 hours; the slurry after ball milling is transferred to the stirring container, and the mass of the ball milling slurry is 10% methyl cellulose, set the stirring speed to 15 rev / min, while stirring, add suspending a...

Embodiment 2

[0020] According to the mass percentage, weigh 47% Fe powder, 38% Cr 2 o 3 Powder, 15% Al 2 o 3 powder, the purity of Fe powder is 99.9%, the particle size is 100nm, Cr 2 o 3 The purity of the powder is 99.9%, the particle size is 200nm, Al 2 o 3 The purity of the powder was 95.0%, and the particle size was 200 nm.

[0021] Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Put the powder into a ball mill tank lined with polyurethane, add agate balls with a particle size of 22mm according to the ball-to-material ratio of 2, add Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Deionized water with 0.8% of the total powder mass, the loading capacity of the ball milling tank is 75%, the ball milling speed is controlled to be 32 rpm, and the ball milling is carried out for 32 hours; the slurry after the ball milling is transferred to the stirring container, and the quality of the ball milling slurry 12% methyl cellulose, set the stirring speed to 18 rev / min, while stirring, add suspendi...

Embodiment 3

[0023] According to the mass percentage, weigh 50% Fe powder, 40% Cr 2 o 3 Powder, 10% Al 2 o 3 powder, in which Fe powder has a purity of 99.9%, a particle size of 150nm, and Cr 2 o 3 The purity of the powder is 99.9%, the particle size is 400nm, Al 2 o 3 The purity of the powder was 95.0%, and the particle size was 400 nm.

[0024] Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Put the powder into a ball mill tank lined with polyurethane, add agate balls with a particle size of 25mm according to the ball-to-material ratio of 2, add Fe powder, Cr 2 o 3 Powder and Al 2 o 3 Deionized water with 0.8% of the total powder mass, the loading capacity of the ball milling tank is 75%, the ball milling speed is controlled to be 35 rpm, and the ball milling is carried out for 35 hours; the slurry after the ball milling is transferred to the stirring container, and the quality of the ball milling slurry 15% methyl cellulose, set the stirring speed to 20 rpm, while stirring, add su...

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Abstract

The invention belongs to the field of ceramic materials, and in particular, relates to a Fe-Cr base composite ceramic material and a preparation method thereof. The Fe-Cr base composite ceramic material consists of Fe powder, Cr2O3 powder and Al2O3 powder; and the mass percentages are as follows: 45-50% of Fe powder, 35-40% of Cr2O3 powder and 10-20% of Al2O3 powder. The preparation method of theFe-Cr base composite ceramic material comprises the steps of burdening, ball milling, agent feeding and stirring, gel molding, kerosene dipping, degreasing, high-temperature sintering, vibration milling and machining. The prepared Fe-Cr base composite ceramic material has such advantages as high-temperature resistance, corrosion resistance, low expansion coefficient, high strength, high toughnessand excellent machining performances.

Description

technical field [0001] The invention belongs to the field of ceramic materials, and in particular relates to an Fe-Cr-based composite ceramic material and a preparation method thereof. Background technique [0002] In the working environment of high temperature, high humidity and strong corrosion, metal components are very easy to fail and be scrapped due to the harsh service environment, and the service life is severely limited, while ceramic materials are due to their high hardness, wear resistance and chemical stability. Good and low price and a series of excellent physical and chemical properties are widely used in electronics, chemical industry, machinery, metallurgy and other fields. However, traditional single-phase ceramic materials, such as high-alumina ceramics and zirconia ceramics, have low toughness and high brittleness, which limits their application in engineering. At the same time, because such ceramic materials are not easy to be cold-worked, they are not ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F9/04B22F3/10B22F1/00C22C33/02C22C38/06C22C38/18C22C30/00
CPCB22F3/225B22F3/1021B22F9/04C22C33/0285C22C38/06C22C38/18C22C30/00B22F2009/043B22F1/107
Inventor 谢繁晔李旭东谢长清陈耀光
Owner 冷水江市佳晨电子陶瓷有限责任公司
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