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Wear resisting material and preparation method thereof

A technology of wear-resistant materials and raw materials, applied in the field of wear-resistant alloy materials, can solve the problems of inability to guarantee deformation, ignoring the influence of corrosion resistance, wear resistance and stability, and inability to take into account the hardness and plasticity of alloy castings, so as to strengthen the surface. Wear resistance and corrosion resistance, improve production efficiency, improve the effect of alloy wear resistance

Active Publication Date: 2019-06-11
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above invention evenly distributes diamond particles and boron carbide particles in the aluminum alloy matrix to enhance the wear resistance of the aluminum alloy material. Although it can enhance the hardness and wear resistance of the alloy material, it ignores the corrosion resistance and hardness of the material surface The impact on wear resistance and stability cannot guarantee the deformation of the material due to wear for a long time, and the raw material composition is simple, the process is simple, there is no post-casting thermal processing measures, and the hardness and plasticity of the alloy casting cannot be considered

Method used

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  • Wear resisting material and preparation method thereof
  • Wear resisting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Prepare wear-resistant material as follows:

[0033] 1. Preparation of raw materials:

[0034] The relative weight ratio of aluminum nitride, aluminum oxide, molybdenum disilicide and graphite is 1:1:1.1:0.01; the aluminum nitride, aluminum oxide, molybdenum disilicide and graphite are all in the form of fine powder, with an average particle size of 10 μm.

[0035] The micro-arc oxidation electrolyte contains 6g / L sodium borate, 6g / L sodium silicate, 0.4g / L sodium hydroxide, 1.2g / L boric acid and silicon carbide micropowder with a particle size of 200nm.

[0036] Sodium silicate is Na 2 SiO 3 9H 2 O, where Na 2 O content was 19.6 wt%, Na 2 O and SiO 2 The ratio is 1.02; the content of sodium hydroxide is ≥ 80 wt %; the content of boric acid is ≥ 99.6 wt %; the sodium borate is sodium borate decahydrate.

[0037] Cu, Mn, Mg, Sn, Ru, Ni, Lu, Mo, Fe, Al all use simple substance as raw material, and the purity is greater than 99.9%; Sr uses aluminum-str...

Embodiment 2

[0050] Embodiment 2: prepare wear-resistant material as follows:

[0051] 1. Preparation of raw materials:

[0052] The relative weight ratio of aluminum nitride, aluminum oxide, molybdenum disilicide and graphite is 1:1:1.4:0.01; the aluminum nitride, aluminum oxide, molybdenum disilicide and graphite are all in the form of fine powder, with an average particle size of 13 μm.

[0053] The micro-arc oxidation electrolyte contains 9g / L sodium borate, 10g / L sodium silicate, 0.9g / L sodium hydroxide, 2.7g / L boric acid, 8mL / L triethanolamine, 2.5mL / L hydrogen peroxide, 0.5g / L L EDTA and silicon carbide powder with a particle size of 800nm.

[0054] Sodium silicate is Na 2 SiO 3 9H 2 O, where Na 2 O content was 23.5 wt%, Na 2 O and SiO 2 The ratio is 1.05; the content of sodium hydroxide is ≥ 80 wt %; the content of boric acid is ≥ 99.6 wt %; the sodium borate is sodium borate decahydrate.

[0055] Cu, Mn, Mg, Sn, Ru, Ni, Lu, Mo, Fe, Al all use simple substance as raw materi...

Embodiment 3

[0068] Embodiment 3: prepare wear-resistant material as follows:

[0069] 1. Preparation of raw materials:

[0070] The relative weight ratio of aluminum nitride, aluminum oxide, molybdenum disilicide and graphite is 1:1:1.3:0.01; the aluminum nitride, aluminum oxide, molybdenum disilicide and graphite are all in the form of fine powder, with an average particle size of 12 μm.

[0071] The micro-arc oxidation electrolyte contains 7.5g / L sodium borate, 8g / L sodium silicate, 0.6g / L sodium hydroxide, 2g / L boric acid and silicon carbide micropowder with a particle size of 500nm, and the micro-arc oxidation electrolyte also includes 6.5mL / L triethanolamine, 2mL / L hydrogen peroxide, 0.3g / LEDTA.

[0072] Sodium silicate is Na 2 SiO 3 9H 2 O, where Na 2 O content was 21.2 wt%, Na 2 O and SiO 2 The ratio is 1.04; the content of sodium hydroxide is ≥ 80 wt %; the content of boric acid is ≥ 99.6 wt %; the sodium borate is sodium borate decahydrate.

[0073] Cu, Mn, Mg, Sn, Ru, Ni...

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Abstract

The invention discloses a wear resisting material. Aluminum nitride, aluminum oxide, molybdenum disilicide and graphite powder particles are uniformly distributed in an aluminum alloy basal body; a composite micro-arc oxidation layer is distributed on the surface of the aluminum alloy basal body; the aluminum nitride, the aluminum oxide and the molybdenum disilicide are high in hardness to prominently improve the hardness and the wear resistance of the material; and through graphite powder, the antifriction can be improved. Through the composite micro-arc oxidation layer on the surface, the alloy surface wear resistance and corrosion resistance can be effectively improved. Strengthening phases of such elements as Sn, Ru, Sr, Lu, Cu, Mn, Mg, Mo and Fe in an alloy are in dispersion strengthening to improve mechanical performances of the material. In a preparation method, through a mode of attaching mixed powder on a pure aluminum metal wire, the mixed powder is positioned in the center of mother alloy liquid during casting, so that the quick dispersion and the homogenization of micropowder particles are facilitated, and the production efficiency is improved; and micro-arc oxidation film forming parameters and conditions are optimized, so that the hardness and the smoothness degree of oxide ceramic films are improved, the film thickness is reduced, and the wear resistance of the material is effectively improved.

Description

technical field [0001] The invention relates to the field of wear-resistant alloy materials, in particular to a wear-resistant aluminum alloy material and a preparation method thereof. Background technique [0002] Ceramic materials have the incomparable advantages of high strength, high hardness, high wear resistance and high temperature resistance, but at the same time, they also expose the disadvantages of great brittleness, poor machinability and high manufacturing cost. It is applied to easy-to-process metals and On the surface of its alloy material, the advantages of metal and ceramics are combined, which can not only exert the high strength and high toughness of the matrix alloy, but also highlight the high hardness provided by the ceramic material to the metal surface, and comprehensively improve the wear resistance and durability of the metal surface. corrosion performance. The film layer formed by electroplating and ceramic spraying is not dense and has poor bondi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/03C25D11/08
CPCC22C21/00C22C1/026C22C1/03C22C1/1036C22C32/0005B22D27/20C25D11/024C25D11/026C25D11/08C25D15/00C22C1/1047
Inventor 赵浩峰夏俊张椿英李紫嫣
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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