Preparation method of carbon-ceramic brake material with strong oxidation resistance
An anti-oxidation, carbon-ceramic technology, applied in mechanical equipment, friction linings, gear transmission mechanisms, etc., can solve the problems of wear and friction interface stability, poor anti-oxidation performance of friction interface, etc., to reduce oxidation wear and improve anti-oxidation. The effect of oxidative power
Inactive Publication Date: 2020-04-24
山东道普安制动材料有限公司
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The invention relates to a preparation method of a carbon-ceramic brake material with strong oxidation resistance. The method is based on a three-dimensional needled carbon/ceramic brake material. A carbon/carbon-boron carbide composite material is obtained by introducing a CVI deposition B4C process technology between pyrolytic carbon and pyrolytic carbon; a siliconizing treatment is carried outafter a high-temperature treatment; the antioxidant carbon/carbon-boron carbide-silicon carbide composite material with a density of 1.9 g/cm<3> to 3.0 g/cm<3> is obtained; according to the method, the pyrolytic carbon matrix and the carbon fibers in the boron carbide layer can be effectively protected from being eroded by oxygen, meanwhile, the pyrolytic carbon layer outside the boron carbide layer is not influenced and reacts with molten silicon to generate silicon carbide, the integrity of the boron carbide layer is protected; the distribution uniformity of ceramic phases in each area is improved, the mechanical wear resistance of a carbon/carbon area is improved by utilizing the high hardness of boron carbide, the expansion path of cracks in the material failure process is prolonged through the multi-layer structure design, stress release is facilitated, the bearing capacity of the matrix is improved, and the strength and toughness of the brake material become better.
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Property | Measurement | Unit |
Density | 0.6 ~ 1.0 | g/cm³ |
Density | 1.3 ~ 1.7 | g/cm³ |
Density | 1.9 ~ 3.0 | g/cm³ |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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