Preparation method of high-strength high-toughness bionic-function surface wear resistance composite material

A technology of composite materials and bionic functions, which is applied in the field of processing and preparation of bionic wear-resistant composite materials, can solve the problems of high production cost, small scope of application, complex processing technology, etc., to save production costs, improve processing efficiency, and simplify processing steps Effect

Inactive Publication Date: 2014-07-30
JILIN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the above measures have many disadvantages
For example: ①The method of improving the wear resistance and anti-wear performance by changing the composition of the material has its application range limitations. Different materials require different material ratios, so it is not easy to achieve application and promotion; The method of wear resistance will affect the performance of other aspects, and cannot meet the requirements for materials with multiple properties in actual production; ③ For the development and research of new materials, there are generally high production costs, complicated processing technology and common problems. problems such as small scope of application

Method used

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  • Preparation method of high-strength high-toughness bionic-function surface wear resistance composite material
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  • Preparation method of high-strength high-toughness bionic-function surface wear resistance composite material

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Effect test

Embodiment 1

[0033] Preparation of biomimetic wear-resistant composite material containing 90wt.% TiC ceramics in hard unit body

[0034] From the raw powder of the hard unit body, get Al powder (average particle size less than 70 μm, purity 99.0%), Ti powder (average particle size less than 70 μm, purity 99.0%) and C powder (average particle size less than 40 μm, purity 99.0%) ). The above-mentioned three kinds of powders are mixed with the content of Al being 10wt.%, the content of Ti powder and C powder being 90wt.%, and the molar ratio of Ti powder and C powder is 1:1. A circular pit 1 with a depth of 5 mm, a diameter of 5 mm, and a center distance of 15 mm is processed on the carbon steel substrate 5, such as figure 1 shown. After the raw powder of the hard unit body is fully mixed and uniform, it is placed in the uniformly distributed circular pits 1 and compacted at a compaction rate of 60% of its theoretical density. Put the carbon steel base body with the hard unit body materia...

Embodiment 2

[0036]Preparation of biomimetic wear-resistant composite material containing 70wt.% TiC ceramics in hard unit body

[0037] From the raw powder of the hard unit body, get Al powder (average particle size less than 65 μm, purity 99.0%), Ti powder (average particle size less than 65 μm, purity 99.0%), C powder (average particle size less than 35 μm, purity 99.0%) ). The above-mentioned three kinds of powders have an Al content of 30wt.%, and the combined content of Ti powder and C powder is 70wt.%, and the Ti powder and C powder are mixed evenly in a molar ratio of 1:1. On the carbon steel substrate 5, the depth is 5 mm, the width is 5 mm, and the stripe-shaped pits 3 with a spacing of 10 mm are processed, such as image 3 shown. After the raw powder of the hard unit body is fully mixed and uniform, it is placed in the uniformly distributed stripe-shaped pits 3 and compacted according to a compaction rate of 60% of its theoretical density. Put the carbon steel substrate 5 loa...

Embodiment 3

[0039] Preparation of biomimetic wear-resistant composite material containing 50wt.% TiC ceramics in hard unit body

[0040] From the raw powder of the hard unit body, get Al powder (average particle size less than 60 μm, purity 99.0%), Ti powder (average particle size less than 60 μm, purity 99.0%), C powder (average particle size less than 35 μm, purity 99.0%) ). The content of the above three powders is 50wt.%, the content of Ti powder and C powder is 50wt.%, and the molar ratio of Ti powder and C powder is 1:1. A circular pit 1 with a depth of 5 mm, a diameter of 7 mm, and a center distance of 17 mm is machined on the carbon steel substrate 5 . After the raw powder of the hard unit body is fully mixed and uniform, it is placed in evenly distributed circular pits and compacted at a compaction rate of 60% of its theoretical density. Put the carbon steel substrate 5 loaded with the hard unit body material into the vacuum heating device, pass in argon gas after completing th...

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Abstract

The invention discloses a preparation method of a high-strength high-toughness bionic-function surface wear resistance composite material, wherein carbon steel is taken as a base material, round pits with different intervals and ratios of pit-depth to pit-diameter or strip-shaped pits with different intervals and ratios of pit-depth to pit-width are processed in the surface of a smooth carbon steel base, original powder of an Al-Ti-C system hard unit is put into the pits and compacted, an in-situ endogenous TiC-Al base metal composited-structure hard unit is prepared through a sintering technique, and so that the high-strength high-hardness high-toughness bionic wear resistance composite material is manufactured. The bionic wear resistance composite material prepared according to the preparation method provided by the invention not only is good in wear resistance, but also is low in production cost, convenient in processing and manufacturing, and wide in scope of application. The effective method is provided to solve the problems of abrasion resistance of a part in the process.

Description

technical field [0001] The invention relates to a method for processing and preparing a bionic wear-resistant composite material used under friction or abrasive wear conditions. technical background [0002] The wear problem of mechanical parts widely exists in various fields of machining. The damage of mechanical parts caused by wear not only affects the processing quality of products and reduces production efficiency, but also frequently replaces worn parts and easily causes large economic losses and waste of resources. Therefore, improving the wear resistance and wear resistance of mechanical parts is an urgent problem in the engineering field. In order to solve this problem, researchers at home and abroad are not only working hard to improve the wear resistance of materials in more traditional ways, but also devoting themselves to developing new materials. But all there are more weak points in the above measures. For example: ①The method of improving the wear resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F7/08
Inventor 梁云虹赵骞韩丽丽李秀娟张志辉任露泉
Owner JILIN UNIV
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