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Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material and preparation method thereof

A composite material and high-temperature-resistant technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve serious wear and tear problems, achieve good mechanical properties, reduce friction coefficient and wear rate, and fast sintering speed

Inactive Publication Date: 2019-12-13
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When iron-based metal materials are applied to sliding bearings, the wear is serious and there are great disadvantages

Method used

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  • Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material and preparation method thereof
  • Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material and preparation method thereof
  • Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] This embodiment provides a Ti 3 AlC 2 -Fe alloy-based high temperature resistant self-lubricating composite material, the preparation method of which is:

[0027] According to the volume percentage, add 5% Ti with a particle size of 40 mesh 3 AlC2 , and the rest are mixed Fe alloy powders with a particle size greater than 150 meshes. The volume percentage of the Fe alloy powder components is 15% Cu powder, 1% Ni powder, 5% Cr powder, and the rest is Fe powder. The above powders are processed by a planetary ball mill Carry out uniform ball mixing. The mixing process is carried out in an argon atmosphere. Alcohol is used as a dispersant. The amount added is 4ml per 100g of mixed powder. , running alternately in forward and reverse directions, once every 30 minutes; after drying the uniformly mixed powder, put it into a cylindrical mold for pre-compression molding, the pressure is 15MPa, the holding time is 15s, and then the pre-pressed block is dried; The dried pre-pre...

Embodiment 2

[0029] This embodiment provides a Ti 3 AlC 2 -Fe alloy-based high temperature resistant self-lubricating composite material, the preparation method of which is:

[0030] Add 10% Ti with particle size of 100 mesh according to volume percentage 3 AlC 2 , and the rest are mixed Fe alloy powders with a particle size greater than 150 meshes. The volume percentage of the Fe alloy powder components is 15% Cu powder, 1% Ni powder, 5% Cr powder, and the rest is Fe powder. The above powders are processed by a planetary ball mill Carry out uniform ball mixing. The mixing process is carried out in an argon atmosphere. Alcohol is used as a dispersant. The amount added is 5ml per 100g of mixed powder, the ball-to-material ratio is 4:1, the speed of the ball mill is set to 350r / min, and the ball milling time is 1h , running alternately in forward and reverse directions, once every 30 minutes; after drying the uniformly mixed powder, put it into a cylindrical mold for pre-compression moldi...

Embodiment 3

[0032] This embodiment provides a Ti 3 AlC 2 -Fe alloy-based high temperature resistant self-lubricating composite material, the preparation method of which is:

[0033] According to the volume percentage, add 15% Ti with a particle size of 30 mesh 3 AlC 2 , and the rest are mixed Fe alloy powders with a particle size greater than 150 meshes. The volume percentage of Fe alloy powder components is 15% Cu powder, 2% Ni powder, 3% Cr powder, and the rest is Fe powder. The above powders are processed by a planetary ball mill Carry out uniform ball mixing. The mixing process is carried out in an argon atmosphere. Alcohol is used as a dispersant. The amount added is 6ml per 100g of mixed powder, the ball-to-material ratio is 4:1, the ball mill speed is set to 300r / min, and the ball milling time is 1h , running alternately in forward and reverse directions, once every 30 minutes; after drying the uniformly mixed powder, put it into a cylindrical mold for pre-compression molding, t...

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Abstract

The invention provides a Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material and a preparation method of the Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material, and belongs to the field of lubricating materials. The composite material is prepared by mixing and sintering raw materials and comprises the following raw materials of,by mass percentage, 25-50% of Ti3AlC and the balance of a Fe alloy. The Fe alloy comprises, by mass percentage, 1-15% of Cu powder, 0.1-5%% of Ni powder, 0.5-5% of Cr powder and the balance Fe powder.The Ti3AlC2-Fe alloy-based high-temperature-resistant self-lubricating composite material has the advantages of fatigue resistance, impact resistance, high temperature resistance, strong bearing capacity and the like, can achieve self-lubricating performance, reduces the friction coefficient, has better self-lubricating performance under high-temperature conditions, and is suitable for manufacturing a self-lubricating material under severe working conditions.

Description

technical field [0001] The invention relates to the field of lubricating materials, in particular to a Ti 3 AlC 2 -Fe alloy-based high temperature resistant self-lubricating composite material and preparation method thereof. Background technique [0002] Although ordinary Fe-based lubricating materials are cheap and have excellent mechanical properties such as fatigue resistance, impact resistance, and strong load-carrying capacity, their high-temperature friction and wear properties have always limited their use. [0003] Liu Kexin et al. adopted Ti 3 AlC 2 Added as a reinforcing phase to metal Al, Ti was prepared by spark plasma sintering (SPS) 3 AlC 2 / Al composites, to study the effect of sintering temperature on the relative density, hardness and friction coefficient of composites. The results show that: with the increase of sintering temperature, the relative density and hardness of the composite material also increase. When the sintering temperature is 550℃, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/42C22C38/50C22C38/56C22C38/06C22C33/02B22F1/00B22F9/04B22F3/02B22F3/105
CPCC22C38/42C22C38/50C22C38/56C22C38/06C22C33/0228C22C33/0257B22F9/04B22F3/02B22F3/105B22F2009/043B22F2009/042B22F2003/1051B22F2999/00B22F1/052B22F2201/20
Inventor 李艳国邹芹袁东方娄志超焦子剑代利峰
Owner YANSHAN UNIV
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