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Innovative Solutions For High-Performance Ceramic Components
Copper-carbon composite material
Muyee Ceramics independently developed and obtained a national invention patent for copper-carbon composite materials, using an electrodeposition method to prepare a three-dimensional network copper skeleton. The three-dimensional network porous copper material has a porosity of 40%-95%, a pore size of 0.3-2.0mm, and certain mechanical properties. The graphite filled into the copper network can use purified natural graphite or artificial graphite, and after sintering, a composite material with low resistance, good conductivity, good self-lubrication, and low counter-wear is obtained. Comparison of the performance of the three-dimensional network copper-carbon composite material produced by this patent with foreign carbon sliders:Serial NumberUnitMuyee Three-dimensional Copper Network Copper-carbon Composite Carbon SliderPanTrac Copper-infiltrated Carbon SliderHoffmann Pure Carbon Slider1Carbon bar density g/cm³2.33.31.782Flexural strength MPa3255303Compressive strength MPa59110404Impact toughness J/cm²0.390.150.15Resistivity at 20℃ μΩ·m49386Wear g / 1000km0.220.460.80 Compared with the currently widely used pure carbon sliders and metal-impregnated carbon sliders in China, the three-dimensional network copper-carbon composite material carbon sliders produced by this invention patent have many advantages:(1) Light weight and small inertia, low probability of wire detachment during operation, and not easy to generate arcs;(2) Low resistivity and good conductivity, low operating heat generation;(3) Significantly improved impact toughness, not easy to break during operation, high reliability;(4) Good self-lubrication of carbon bars, low self-wear, saving high-speed rail operating costs;(5) Low hardness, low wear on the contact line, greatly extending the service life of the contact wire.
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