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Ceramic-reinforced metal-matrix composite with optimized particle size and preparation method and application thereof

A composite material and metal-based technology, applied in the field of wear-resistant materials, can solve the problems of easy falling off, mechanical interface interface, fracture failure, etc., and achieve the effects of excellent mechanical properties, good interface connection and low cost.

Active Publication Date: 2018-12-18
一重集团(天津)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because of its small particle size, it is easy to produce a small interface between the ceramic particles and the substrate. When the substrate is worn and concave, it is easy to fall off as a whole; ceramic particles in the range of 1 mm to 5 mm are currently less studied. On the one hand, due to large The wetting angle between some ceramic particles and the metal matrix is ​​relatively large, which is prone to interface mechanical occlusion and hole defects during the preparation process, and the overall particle falls off during use; on the one hand, due to the large ceramic particles reinforced metal matrix composites It is easy to produce brittle cracks during the preparation process or during use, resulting in fracture failure, but because it is the main wear-resistant phase, the effect of the composite use mechanism of large particles is more prominent

Method used

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  • Ceramic-reinforced metal-matrix composite with optimized particle size and preparation method and application thereof
  • Ceramic-reinforced metal-matrix composite with optimized particle size and preparation method and application thereof
  • Ceramic-reinforced metal-matrix composite with optimized particle size and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0080] A ceramic reinforced metal matrix composite material with optimized particle size is used in the working area of ​​the roller sleeve of the vertical mill. The roller sleeve of the vertical mill includes a tetragonal optimized particle size ceramic particle reinforced metal matrix composite material and casting material. The casting material is high-resistant Grinding alloy powder; the thickness of the working area is 1 / 3 of the height of the roller sleeve of the overall vertical mill;

[0081] The tetragonal-optimized ceramic particle-reinforced metal matrix composite material is obtained by sintering the tetragonal-compacted ceramic-reinforced block through programmed temperature-controlled liquid phase sintering;

[0082] The tetragonal compacted ceramic reinforced blocks include metal matrix materials and reinforced phase ceramic particles; wherein, the reinforced phase ceramic particles are 40% of the volume percentage of the tetragonal compacted ceramic reinforced b...

Embodiment 2

[0107] An optimized particle size ceramic reinforced metal matrix composite for use in the work zone of a vertical mill liner comprising a cylindrical optimized ceramic particle reinforced metal matrix composite and a casting material that is highly wear resistant Alloy powder; the thickness of the working area is 1 / 2 of the height of the liner of the overall vertical mill;

[0108] The cylinder-optimized ceramic particle-reinforced metal-matrix composite material is obtained by sintering a cylinder-compacted ceramic reinforcement block through programmed temperature-controlled liquid phase sintering;

[0109] The ceramic reinforced blocks compacted by cylinders include metal matrix materials and reinforced phase ceramic particles; wherein, the reinforced phase ceramic particles are 40% of the volume percentage of the cylindrically compacted ceramic reinforced blocks; the reinforced phase ceramic particles It is 1mm~5mm ceramic particles 2-1, 0.01μm~0.1μm ceramic particles and...

Embodiment 3

[0133] A ceramic reinforced metal matrix composite material with optimized particle size is used in the working area of ​​the vertical mill roll cover. The vertical mill roll cover includes a hexagonal cylinder with optimized particle size ceramic particle reinforced metal matrix composite material and casting material. The casting material is High wear-resistant alloy powder; the thickness of the working area is 1 / 3 of the height of the roller sleeve of the overall vertical mill;

[0134] The hexagonal cylinder-optimized ceramic particle reinforced metal matrix composite material is obtained through programmed temperature-controlled liquid-phase sintering of a ceramic reinforcement block compacted by hexagonal cylinders;

[0135] The ceramic reinforced block compacted by hexagonal cylinders comprises a metal matrix material and ceramic particles of the reinforcing phase; wherein, the ceramic particles of the reinforced phase are 40% of the volume percentage of the ceramic rein...

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Abstract

The invention provides a ceramic-reinforced metal-matrix composite with an optimized particle size and a preparation method and application thereof, and belongs to the technical field of wear-resistant materials. The ceramic-reinforced metal-matrix composite with the optimized particle size comprises a metal base material and reinforcement-phase ceramic particles. The volume content of a reinforcement phase in the ceramic-reinforced metal-matrix composite with the optimized particle size is 20%-50%. The particle size of the reinforcement-phase ceramic particles is one or the combination selected from 1-0.1 [mu]m, 0.1-1 mm and 1-5 mm. The composite is prepared through a liquid-phase sintering method. The preparation method is simple in process and low in cost, various reinforcement mechanisms including a staggered reinforcement mechanism, a Orowan reinforcement mechanism, a hardening reinforcement mechanism, a deposition reinforcement mechanism and the like are adopted for the composite, and the reinforcement mechanisms generated by changes of the matrix microstructure interact to achieve excellent mechanical performance of the whole composite.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, and in particular relates to a ceramic-reinforced metal-matrix composite material with an optimized particle size and its preparation method and application. Background technique [0002] Ceramic particle reinforced metal matrix composites (MMC S ) usually have higher specific strength and specific stiffness than the matrix material, showing broad application prospects in industries, defense and transportation and other sectors. With the deepening of the research on particle-reinforced metal matrix composites, it can be found that particle shape, particle volume content, matrix properties and particle size have an important influence on the preparation of ceramic particle-reinforced iron-based alloy composites. Among them, the size of the reinforcing particles has a significant impact on the microscopic deformation mechanism, strength, and fracture of the heterogeneous material ...

Claims

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Application Information

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IPC IPC(8): B22F3/10B22F1/00C22C38/14C22C38/12C22C38/04C22C38/02C22C38/58C22C38/56C22C38/50C22C38/48C22C38/44C22C27/04C22C27/06C22C38/38C22C38/36C22C38/28C22C30/00C22C32/00C22C38/46B22C1/18B22C9/02B22C9/22C21D1/26C21D1/18C21D9/00
CPCB22C1/181B22C9/02B22C9/22B22F1/0003B22F3/101B22F3/1035C21D1/18C21D1/26C21D9/0068C22C27/04C22C27/06C22C30/00C22C32/0005C22C32/0026C22C32/0031C22C32/0047C22C32/0052C22C32/0068C22C38/002C22C38/02C22C38/04C22C38/12C22C38/14C22C38/28C22C38/36C22C38/38C22C38/44C22C38/46C22C38/48C22C38/50C22C38/56C22C38/58
Inventor 佟伟平李萍李笑
Owner 一重集团(天津)新材料有限公司
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