ZTA ceramic particles coated with aluminothermic reduction reaction powder as well as preparation method and application of ZTA ceramic particles

A ceramic particle and reaction technology is applied in the field of metal matrix composite materials and wear-resistant materials, which can solve the problems of low process difficulty coefficient, avoid complicated procedures, avoid increased wear amount, and enhance the effect of metallurgical interface bonding

Pending Publication Date: 2022-04-29
华清平耐磨科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of simple operation, low process difficulty coefficient and good surface modification of ceramic particles.

Method used

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  • ZTA ceramic particles coated with aluminothermic reduction reaction powder as well as preparation method and application of ZTA ceramic particles
  • ZTA ceramic particles coated with aluminothermic reduction reaction powder as well as preparation method and application of ZTA ceramic particles
  • ZTA ceramic particles coated with aluminothermic reduction reaction powder as well as preparation method and application of ZTA ceramic particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A preparation method of a wear-resistant vertical grinding roller, comprising the following steps:

[0063] Step 1, surface alloying of ZTA ceramic particles:

[0064] (1) Soak ZTA ceramic particles with an average particle size of 2 mm in water for 10 h, then wash them in ethanol for 3 times, and then dry them to obtain dried ZTA ceramic particles.

[0065] (2) Take the mass ratio as the aluminothermic reduction reaction powder: ZTA ceramic particles=1:3, weigh the aluminothermic reduction reaction powder and ZTA ceramic particles, and combine the weighed aluminothermic reduction reaction powder and binder (water glass , the mixture of polyvinyl alcohol, by mass ratio, water glass: polyvinyl alcohol=1:1) mixes and stirs (wherein, the quality of binding agent is 5% of the total mass of ZTA ceramic particles), then add the dried Stirring the ZTA ceramic particles, so that the aluminothermic reduction reaction powder is evenly coated on the surface of the dried ZTA ceram...

Embodiment 2

[0080] A method for preparing a wear-resistant high-pressure roller mill roller cover, comprising the following steps:

[0081] Step 1, surface alloying of ZTA ceramic particles:

[0082] (1) Cleaning of ceramic particles. First, ZTA ceramic particles with an average particle size of 3 mm were soaked in water for 24 hours, then put into ethanol, washed 4 times, and then dried to obtain dried ZTA ceramic particles.

[0083] (2) Thermite reduction reaction powder by mass ratio: ZTA ceramic particles=1:10, weigh the thermite reduction reaction powder and ZTA ceramic particles, and weigh the aluminotherm reduction reaction powder and binder (water glass , PAM, the mixture of phenolic resin, by mass ratio, water glass: PAM: phenolic resin=1:1:1) stirs (wherein, the gross mass of binding agent is 15% of ZTA ceramic particle gross mass), then add The dried ZTA ceramic particles are stirred, so that the aluminothermic reduction reaction powder is evenly coated on the surface of the d...

Embodiment 3

[0096] A method for preparing a wear-resistant liner, comprising the steps of:

[0097] Step 1, surface alloying of ZTA ceramic particles:

[0098] (1) Cleaning of ceramic particles, soaking ZTA ceramic particles with an average particle size of 2 mm in water for 12 hours, then washing them in ethanol for 3 times and drying to obtain dried ZTA ceramic particles.

[0099] (2) Thermite reduction reaction powder by mass ratio: ZTA ceramic particles=1:3, weigh the thermite reduction reaction powder and ZTA ceramic particles, and weigh the thermite reduction reaction powder and binder (water glass , PVA, the mixture of phenolic resin, by mass ratio, water glass: PVA: phenolic resin=1:1:1) stirs (wherein, the gross mass of binding agent is 8% of ZTA ceramic particle gross mass), then add The dried ZTA ceramic particles are stirred, so that the aluminothermic reduction reaction powder is evenly coated on the surface of the dried ZTA ceramic particles, and ZTA ceramic particles coate...

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Abstract

The invention discloses aluminothermic reduction reaction powder coated ZTA ceramic particles and a preparation method and application thereof, and belongs to the field of metal-based composite materials and wear-resistant materials. The aluminothermic reduction reaction powder coated ZTA ceramic particles are of a ZTA ceramic particle/aluminothermic reduction reaction powder core-shell structure, metallized ZTA ceramic particles obtained by conducting self-propagating sintering on the aluminothermic reduction reaction powder coated ZTA ceramic particles are combined with an alloy matrix, and the wear-resistant composite material is prepared. The prepared wear-resistant composite material is used as a part of a wear-resistant part and is combined with an application part (a roller mill roller sleeve, a vertical mill roller or a lining plate), so that the wear resistance of equipment is improved. Through the improvement of the preparation method, an interface with the width of 20-50 microns can be formed between the ZTA ceramic particles and the matrix, and the wear resistance of the wear-resistant composite material can be remarkably improved through the formation of the interface.

Description

technical field [0001] The invention relates to ZTA ceramic particles coated with aluminothermic reduction reaction powder, a preparation method and application thereof, and belongs to the technical field of metal matrix composite materials and wear-resistant materials. Background technique [0002] Ceramic particle-reinforced metal matrix composites, especially zirconia-toughened alumina ceramic (ZTA) particle-reinforced iron-based composites have excellent physical, chemical and mechanical properties, and have been widely used in many wear-resistant engineering components in recent years. The first prerequisite for the practical application of ZTA particle-reinforced iron-based composites is the close combination between ZTA particles and metal parts. However, due to the Fe / Al 2 o 3 and Fe / ZrO 2 The contact angles are as high as 140° and 116°, respectively, and the poor wettability of the interface has become one of the biggest problems in the preparation of composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/18B22F7/08B02C4/30B02C17/22C22C38/18C22C38/12C22C38/04C22C38/08C22C38/14C22C30/00C22C27/04C22C33/02C22C1/05C22C38/36C22C38/24C22C38/38C22C38/28C22C38/22C22C38/58C22C38/56C22C38/46C22C38/44C22C38/40C22C38/50
CPCB22F7/08B02C4/305B02C17/22C22C38/18C22C38/12C22C38/04C22C38/08C22C38/14C22C30/00C22C27/04C22C33/0228C22C1/05C22C38/36C22C38/24C22C38/38C22C38/28C22C38/22C22C38/58C22C38/56C22C38/46C22C38/44C22C38/40C22C38/50
Inventor 佟伟平
Owner 华清平耐磨科技(苏州)有限公司
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