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Preparation method for silicon carbide aluminum matrix brake disc material

A silicon-aluminum carbide-based, brake disc technology, applied in the direction of brake discs, mechanical equipment, brake types, etc., can solve the problems of reinforced phase shedding, high density, complex manufacturing process, etc., and achieve improved tensile strength and durability. Effect

Inactive Publication Date: 2017-05-31
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Composite materials with ceramic particles, whiskers, and fibers as reinforcements are the most common, and they perform well under steady state or low loads; however, they have poor toughness and weak impact resistance, and will appear as Brittle fracture, reinforcement phase shedding, etc., which make it difficult to exert the wear resistance of the composite material, and poor reliability when used as a workpiece
The three-dimensional porous prefabricated body as a reinforced composite material improves the bearing capacity to a certain extent, but the preparation process of the prefabricated body is complicated.
Although the traditional metal-based ceramic composites mentioned above all have relatively good mechanical properties, good wear resistance and corrosion resistance, and have both thermal and electrical conductivity, their density is relatively high and the manufacturing process is complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare silicon carbide ceramic hollow spheres with a diameter of 5 mm by conventional methods; put the prepared silicon carbide ceramic hollow spheres into hydrofluoric acid with a concentration of 56% by mass for pickling treatment, and then put them into an electric furnace to preheat to 400°C and keep for 3 hours.

[0021] Place a piece of porous ceramics with an aperture of 0.5mm and a thickness of 10mm at the bottom of the mold, set the total volume of the silicon carbide ceramic hollow balls to be 50% of the volume of the mold, determine the number of silicon carbide ceramic hollow balls, and then place the pretreated A predetermined number of silicon carbide ceramic hollow spheres are put into the mold; during the placement process, the stacking method is taken into account, so that each silicon carbide ceramic hollow sphere is in a stable state in the mold; the top layer of silicon carbide ceramic hollow spheres is covered with a piece of 5mm graphite plate wit...

Embodiment 2

[0027] Prepare silicon carbide ceramic hollow balls with a diameter of 5 mm by conventional methods; put the prepared silicon carbide ceramic hollow balls into hydrofluoric acid with a concentration of 58% by mass for pickling treatment, and then put them into an electric furnace to preheat to 600°C and keep for 4 hours.

[0028] Place a piece of porous ceramics with an aperture of 0.5mm and a thickness of 10mm at the bottom of the mold, set the total volume of the silicon carbide ceramic hollow balls to be 50% of the volume of the mold, determine the number of silicon carbide ceramic hollow balls, and then place the pretreated A predetermined number of silicon carbide ceramic hollow spheres are put into the mold; during the placement process, the stacking method is taken into account, so that each silicon carbide ceramic hollow sphere is in a stable state in the mold; the top layer of silicon carbide ceramic hollow spheres is covered with a piece of 5mm graphite plate with a ...

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Abstract

The invention discloses a preparation method for a silicon carbide aluminum matrix brake disc material. Silicon carbide-aluminum is adopted to serve as a matrix material, so that the overall density and strength of the composite material are adjusted; and furthermore, tensile strength and durability are improved through a mode of adding inorganic particles for cladding the material.

Description

technical field [0001] The invention relates to the field of composite material manufacturing, in particular to a method for preparing a silicon carbide aluminum-based brake disc material. Background technique [0002] Brake discs play a vital role in the braking system of a car, and a brake disc with excellent performance is one of the prerequisites for safe driving of a car. Although after years of application and development, from the early asbestos brake discs to the widely used cast iron brake discs, there are some defects in environmental protection and quality, which cannot fully meet the market demand. The rapid development of the automobile industry, the substantial increase in automobile production, the requirements for reducing energy consumption and strengthening environmental protection for the lightweight of automobile materials have forced people to continuously carry out research on automobile brake discs. [0003] Aluminum alloy car brake discs have the fol...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C21/00C22C32/00F16D65/12
CPCF16D65/125C22C1/1036C22C21/00C22C32/0063C22C1/1073
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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