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Preparation method of hybrid synergistically reinforced iron-based wear-resistant material

A wear-resistant material, iron-based technology, used in metal material coating technology, metal processing equipment, liquid chemical plating, etc. Abrasiveness, the effect of short preparation time

Active Publication Date: 2021-06-01
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the vast majority of my country's engineering ceramic / metal parts are imported, and the wear resistance of domestic technology and foreign countries is quite different, and it is not enough to realize large-scale industrial production

Method used

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  • Preparation method of hybrid synergistically reinforced iron-based wear-resistant material
  • Preparation method of hybrid synergistically reinforced iron-based wear-resistant material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for preparing an alumina and zirconia hybrid synergistically reinforced iron-based wear-resistant material, comprising the following steps:

[0048] Step 1, Al 2 o 3 , ZrO 2 Pretreatment of ceramic particles;

[0049] Use a 3mm stainless steel sieve to screen out ceramic particles with a diameter greater than 3mm to ensure the uniformity of the particle size of the ceramic particles used; ultrasonically clean the screened ceramic particles in an alcohol solution with a volume percentage of 50% for 5 minutes , remove surface impurities and oil stains, and ensure that the interface between ceramic particles and metal substrates is clean;

[0050] Step 2, Al 2 o 3 , ZrO 2 Electroless nickel plating of ceramic particles; nickel plating steps are as follows:

[0051] a. Soak the ceramic particles in acetone for 3 minutes, then put them in 200g / L sodium hydroxide solution and 2.4mol / L hydrochloric acid solution for 20 minutes each, and perform ultrasonic clean...

Embodiment 2

[0073] Analyze and test the alumina and zirconia hybrid synergistically reinforced iron-based wear-resistant materials prepared in Example 1

[0074] ①Using the Archimedes drainage method to test the density of alumina and zirconia hybrid synergistically reinforced iron-based wear-resistant materials;

[0075] The test shows that the density of the iron-based wear-resistant material reinforced by the hybrid of alumina and zirconia is as high as 98%.

[0076] ② Use a metallographic microscope and a scanning electron microscope to observe the distribution of alumina and zirconia in the metal matrix and the interface bonding of particles / matrix; figure 2 (a) It can be seen that alumina and zirconia ceramic particles are evenly distributed inside the metal matrix, figure 2 (b) It can be seen that the interface between the ceramic particles and the metal substrate after nickel plating is clean and free of defects such as impurities;

Embodiment 3

[0078] The high-frequency pulse current sintering device is vertical, including a high-frequency pulse current sintering furnace (29) and an electric control box (27) connected to each other by wires (21);

[0079]The high-frequency pulse current sintering furnace (29) comprises a top base (10), a base (1) and a vacuum chamber (20) between the top base (10) and the base (1), the top base (10 ) is connected with a pressure motor (11), the top and bottom in the vacuum furnace chamber (20) are respectively provided with an upper electrode plate (9) and a lower electrode plate (2), the middle of the upper electrode plate (9) The lower part and the middle upper part of the lower electrode plate (2) are vertically connected with an upper electrode (8) and a lower electrode (3) respectively, and the lower end of the upper electrode (8) and the upper end of the lower electrode (3) are respectively connected with an upper pad Block (7) and lower pad (4), graphite mold (5) is arranged b...

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Abstract

The invention belongs to the technical field of preparation and application of wear-resistant materials, and particularly relates to a preparation method of a hybrid synergistically reinforced iron-based wear-resistant material. In order to solve the problem about how to add Al2O3 and ZrO2 ceramics into a metal matrix through an advanced preparation method, adjust the proportion of Al2O3 and ZrO2, ensure uniform dispersion of Al2O3 and ZrO2 in the material at the same time and avoid direct contact of Al2O3 and ZrO2 so as to meet the requirement of heavy industry for wear resistance of mechanical equipment parts, the preparation method of the hybrid synergistically reinforced iron-based wear-resistant material is provided. According to the method, Al2O3 and ZrO2 in a proper proportion are uniformly added into iron-based alloy through the advanced preparation technology, high-quality combination of ceramic particles in the material and the metal matrix is ensured, and the volume ratio of Al2O3 to ZrO2 is optimized and adjusted under the condition of adding a certain amount of the ceramic particles according to the actual working conditions, so that the wear resistance of the mechanical equipment parts is further improved. The method is also of great significance to economic development and social development in China.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of wear-resistant materials, and in particular relates to a preparation method of hybrid synergistically reinforced iron-based wear-resistant materials. Background technique [0002] As an important failure mode of service components, wear has become a major bottleneck that is difficult to break through in the rapid development of related industries. The annual consumption of metal materials due to wear and tear in my country is about 3 million tons, and the direct economic loss is about 100 billion yuan or more. Therefore, improving the wear resistance of mechanical equipment and parts can effectively reduce the operating costs of enterprises. At the same time, the improvement of wear resistance can reduce production pauses and cost increases caused by the consumption of a large amount of manpower and material resources. [0003] At this stage, the commonly used wear-resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02B22F9/04C23C18/36B22F3/105C22C33/02
CPCB22F9/04C23C18/36C23C18/1639B22F3/105B22F3/003C22C33/0228B22F2009/043B22F1/17Y02P10/25
Inventor 刘瑞峰王文先高翔赵威
Owner TAIYUAN UNIV OF TECH
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