Aluminum oxide ceramic friction material prepared from aluminum profile industrial waste residue and preparation method thereof

A technology of alumina ceramics and industrial waste slag, which is applied in the field of preparing alumina ceramic friction materials from aluminum profile industrial waste slag, can solve the problems of high cation charge, high sintering temperature, and low diffusion coefficient, and achieve high activity, high mechanical strength, Good overall performance

Inactive Publication Date: 2011-09-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the preparation of alumina ceramic materials is mainly based on industrial alumina as the main raw material, because Al 2 o 3 Its own cationic charge is large, the radius is small, and the ionic bond is strong, which leads to its large lattice energy, low diffusion coefficient and high sintering temperature.

Method used

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  • Aluminum oxide ceramic friction material prepared from aluminum profile industrial waste residue and preparation method thereof
  • Aluminum oxide ceramic friction material prepared from aluminum profile industrial waste residue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put 100g of aluminum profile industrial waste slag into a ball mill tank and carry out wet ball milling, according to the mass ratio of material: ball: water = 1: 2: 1 mixture (material refers to aluminum profile industrial waste, water is deionized water, and ball is alumina small balls), milled for 4 hours, filtered through a 250-mesh sieve, dried in a drying oven at 120°C, and then calcined in a high-temperature furnace at a temperature of 1000°C and a heating rate of 150°C / h , the holding time is 1h, after natural cooling, the calcined aluminum profile industrial waste slag clinker is obtained; the calcined aluminum profile industrial waste slag clinker is then subjected to wet ball milling, according to the mass ratio material: ball: water = 1: 2: 1 mixing, ball milling After 8 hours, pass through a 250 mesh sieve again, and then obtain the used aluminum waste slag clinker after drying the sieved slurry; according to the aluminum waste slag clinker: clay: talc: TiO ...

Embodiment 2

[0031] The present embodiment differs from Example 1 in that: according to aluminum waste slag clinker: clay: talc: TiO 2 : Hexagonal BN=75:15:4:2:4, batching. The alumina ceramic friction material prepared in this example has a bending strength of 224Mpa, a microhardness of 9.02Gpa, a friction coefficient of 0.675, and a wear rate of 6.81×10 -6 mm 3 (N·m) -1 .

Embodiment 3

[0033] The present embodiment differs from Example 1 in that: according to aluminum waste slag clinker: clay: talc: TiO 2 : Hexagonal BN=80:10:4:2:4, batching. The alumina ceramic friction material prepared in this example has a flexural strength of 258Mpa, a microhardness of 9.64Gpa, a friction coefficient of 0.642, and a wear rate of 6.03×10 -6 mm 3 (N·m) -1 .

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Abstract

The invention discloses a method for preparing an aluminum oxide ceramic friction material from aluminum profile industrial waste residue. The method comprises the following specific steps: (1) pretreating the aluminum profile industrial waste residue; (2) preparing the raw materials of the aluminum oxide ceramic friction material: preparing the raw materials, wherein the weight ratio of aluminum waste residue clinker to clay to talc to TiO2 to hexagonal boron nitride (BN) is (70-85):(5-20):(4-5):(1-2):4; performing the tertiary ball milling on the prepared raw materials, drying, and sieving with a 30-mesh sieve; (3) moulding the aluminum oxide ceramic friction material; and (4) sintering to obtain the aluminum oxide ceramic friction material. The friction material has the advantages of high mechanical strength and good friction and wear performance; the content of aluminum oxide in the aluminum profile industrial waste residue is up to 90%; the particles of the aluminum profile industrial waste residue are ultrafine and have high activity; and on the basis, a defined amount of sintering additive is added so as to effectively reduce the sintering temperature, save the energy and reduce the consumption.

Description

technical field [0001] The invention relates to a method for preparing an alumina ceramic friction material, in particular to a method for preparing an alumina ceramic friction material by using aluminum profile industrial waste slag. Background technique [0002] At present, the treatment methods of industrial waste slag in my country are still relatively backward, mainly for agricultural use and simple landfill, which not only seriously affects the normal production of aluminum factories, causes secondary pollution, but also occupies a large amount of land, and makes many useful chemicals in waste slag Component loss and waste, so the treatment and comprehensive utilization of industrial waste residue in aluminum profile factories is very important. [0003] al 2 o 3 Ceramics are cheap, have high elastic modulus, good wear resistance, chemical stability, high temperature stability and mechanical stability, and are currently the most widely used structural and functional c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 曾令可牛艳鸽王慧程小苏刘平安高富强刘艳春
Owner SOUTH CHINA UNIV OF TECH
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