Disc brake friction pair for heavy-duty vehicle and manufacturing method thereof
A technology of disc brakes and friction pairs, applied in the direction of brake types, brake components, brake discs, etc., can solve problems such as high temperature structural instability and frictional performance instability
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[0061] In the present invention, the preparation method of the carbon fiber toughened multi-element ceramic-metal composite material preferably comprises the following steps:
[0062] (1) Making carbon fiber or carbon fiber cloth into a three-dimensional weaving structure, a two-dimensional carbon cloth laminated structure or a needle-punched carbon fiber felt structure to obtain a carbon fiber prefabricated body;
[0063] (2) Depositing a pyrolytic carbon protective layer on the carbon fiber surface of the carbon fiber prefabricated body by chemical vapor infiltration, and then injecting the suspension slurry into the carbon fiber prefabricated body by using a suspension injection method;
[0064] (3) using chemical vapor infiltration to densify the prefabricated body injected with the suspension slurry to obtain a porous C / C prefabricated body;
[0065] (4) In a vacuum environment or in a protective gas, the Cu-Ti-Si alloy is melted by reaction infiltration, infiltrated into...
Embodiment 1
[0105] Carbon fiber or carbon fiber cloth is made into a three-dimensional woven structure, a two-dimensional carbon cloth laminated structure or a needle-punched carbon fiber felt structure to obtain a carbon fiber prefabricated body, using propylene as a carbon source, and performing chemical vapor infiltration at a holding temperature of 850°C. The time is 6 hours;
[0106] Ti with a particle size of 1 μm 3 SiC 2 , B with a particle size of 1 micron 4 C and Si powder with a particle size of 2 microns are added into a 5% polyvinyl alcohol (PVA) aqueous solution to obtain a suspension slurry, wherein Ti 3 SiC 2 The powder accounts for 4% of the volume fraction of the PVA aqueous solution, B 4 C powder accounts for 6% of the volume fraction of the PVA aqueous solution, Si powder accounts for 4% of the volume fraction of the PVA aqueous solution, and then the suspension slurry is injected into the carbon fiber prefabricated body by the suspension injection method, with prop...
Embodiment 2
[0113] Carbon fiber or carbon fiber cloth is made into a three-dimensional woven structure, a two-dimensional carbon cloth laminated structure or a needle-punched carbon fiber felt structure to obtain a carbon fiber prefabricated body, using propylene as a carbon source, and performing chemical vapor infiltration at a holding temperature of 850°C. The time is 5 hours;
[0114] Ti with a particle size of 1 μm 3 SiC 2 , B with a particle size of 1 micron 4 C and Si powder with a particle size of 2 microns are added into a 5% polyvinyl alcohol (PVA) aqueous solution to obtain a suspension slurry, wherein Ti 3 SiC 2 The powder accounts for 4% of the volume fraction of the PVA aqueous solution, B 4 C powder accounts for 6% of the volume fraction of the PVA aqueous solution, Si powder accounts for 4% of the volume fraction of the PVA aqueous solution, and then the suspension slurry is injected into the carbon fiber prefabricated body by the suspension injection method, with prop...
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