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Preparation method of high-performance ceramic reinforced iron-based composite material

An iron-based composite material and composite material technology are applied in the field of high-performance ceramic reinforced iron-based composite materials and their preparation, and achieve the effects of good stress and load, good fluidity, and excellent shock resistance

Active Publication Date: 2021-03-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the present invention provides a preparation method of a high-performance ceramic reinforced iron-based composite material aiming at the existing technological defects. This method solves the problem of large-scale production while controlling the production cost and simplifying the production process. Size, preparation of three-dimensional network ZTA ceramics of special-shaped parts, solved the wettability problem of ZTA ceramics and molten iron

Method used

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  • Preparation method of high-performance ceramic reinforced iron-based composite material
  • Preparation method of high-performance ceramic reinforced iron-based composite material
  • Preparation method of high-performance ceramic reinforced iron-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (1) The 5-micron alumina powder produced by Aladdin and the 500-nanometer zirconia powder produced by West Asia Pharmaceutical were uniformly ball-milled and mixed at a mass ratio of 1:1.5 to obtain the first mixture. Combine the mixture obtained in the first step with water reducer HPEG2400 and stabilizer Y 2 o 3 , thickener CMC, and deionized water were uniformly mixed according to the mass ratio: 120:1:8:3:100, and ball milled again for 3 hours to obtain a ceramic slurry with good fluidity.

[0073] Take 15ppi polyurethane foam and cut it into 50×50×20mm blocks, evenly coat the ceramic slurry on the 15ppi polyurethane foam template to obtain the first preform, and vacuumize for 10 minutes until there are no closed-cell bubbles on the surface of the polyurethane foam. Put the first preform into an oven, keep it warm at 40°C and 80°C for 24 hours, and fully dry it.

[0074] The three-dimensional network preform was heated to 1450° C. for 2 hours at a heating rate of ...

Embodiment 2

[0079] (1) The 3-micron alumina powder produced by Aladdin and the 1000-nanometer zirconia powder produced by West Asia Pharmaceutical were uniformly ball milled and mixed at a mass ratio of 1:1 to obtain the first mixture. Combine the mixture obtained in the first step with water reducer HPEG2400 and stabilizer Y 2 o 3 , thickener CMC, and deionized water were uniformly mixed according to the mass ratio: 120:0.5:6:3:100, and ball milled again for 4 hours to obtain a ceramic slurry with good fluidity.

[0080] Take 35ppi polyurethane foam and cut it into 60×60×15mm blocks, evenly coat the ceramic slurry on the 35ppi polyurethane foam template to obtain the first preform, and vacuumize for 20 minutes until there are no closed-cell bubbles on the surface of the polyurethane foam. Put the first preform into an oven, keep it warm at 40°C and 80°C for 48 hours, and fully dry it.

[0081] The three-dimensional network preform was heated to 1550° C. for 3 hours at a heating rate of...

Embodiment 3

[0086] (1) The 4-micron alumina powder produced by Aladdin and the 800-nanometer zirconia powder produced by West Asia Pharmaceutical were uniformly ball milled and mixed at a mass ratio of 1:2 to obtain the first mixture. Combine the mixture obtained in the first step with water reducer HPEG2400 and stabilizer Y 2 o 3 , thickener CMC, and deionized water were uniformly mixed according to the mass ratio: 120:0.8:7:3:100, and ball milled again for 3.5 hours to obtain a ceramic slurry with good fluidity.

[0087] Take 25ppi polyurethane foam and cut it into 50×50×15mm blocks, evenly coat the ceramic slurry on the 25ppi polyurethane foam template to obtain the first prefabricated body, and vacuumize for 15 minutes until there are no closed-cell bubbles on the surface of the polyurethane foam. Put the first preform into an oven, keep it warm at 40°C and 80°C for 36 hours, and fully dry it.

[0088] The three-dimensional network prefabricated body was heated to 1500 °C for 2.5 ho...

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Abstract

The invention relates to a high-performance ceramic reinforced iron-based composite material and a preparation method thereof, and belongs to the technical field of composite materials. The compositematerial comprises an iron matrix and a three-dimensional network-shaped ZTA ceramic. The three-dimensional network-shaped ZTA ceramic is a three-dimensional network-shaped ZTA ceramic with a macroscopic size, and the iron matrix penetrates through the three-dimensional network-shaped ZTA ceramic and coats the surface of the three-dimensional network-shaped ZTA ceramic. The preparation method comprises the following steps of sintering zirconium oxide and aluminum oxide ceramic mixed powder slurry through a template replication method to obtain the three-dimensional network-shaped ZTA ceramic;casting and infiltrating molten iron into the three-dimensional network-shaped ZTA ceramic to obtain the three-dimensional network-shaped ZTA ceramic reinforced iron-based composite material. The composite material has the advantages of excellent shock resistance, impact resistance and wear resistance under various severe working conditions.

Description

technical field [0001] The invention relates to the technical field of composite materials; in particular, it relates to a high-performance ceramic reinforced iron-based composite material and a preparation method thereof. Background technique [0002] The application and research of wear-resistant materials play an important role in today's industrial development, such as mechanical equipment in cement, machinery, electric power, mining, metallurgy, shipbuilding, chemical and coal industries, grinding balls, grinding discs, Grinding rollers and accessories, as well as the crushing wall, crushing plate, impact crusher blow bar, etc. of the crusher; large dredging pump flow parts, slurry pump parts, conveying pipelines, etc. In the production process, it is not only worn by hard abrasives, but also in harsh wear environments such as corrosion, high temperature oxidation, and high impact, so it is very prone to rapid wear and failure. Today's industrial wear-resistant materia...

Claims

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Application Information

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IPC IPC(8): C22C33/00C23C18/32C04B38/06C04B35/622C04B35/48C04B35/10
CPCC22C33/00C22C33/006C23C18/1639C23C18/32C04B38/0615C04B35/48C04B35/10C04B35/622
Inventor 李专黄天行赵一博肖鹏
Owner CENT SOUTH UNIV
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