Dimensional accuracy material surface
List dimensional accuracy material surface
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Cmc material introduction
ceramic matrix composites (cmc) are a type of composite material that is composited with ceramics as a matrix and various fibersit is a high-performance composite material formed by implanting high-temperature-resistant continuous ceramic fibers into a ceramic matrix
the manufacturing cycle is long, the cost is high, and the prepared composite material has high porosityceramic matrix composites can greatly improve the reliability and consistency of materials while maintaining the excellent performance of a single ceramic material such as high temperature resistance, high strength, and low densitythe ceramic matrix composite material has a low density (only 1/3~1/4 of the superalloy), and can be used in components such as combustion chambers, regulating plates/sealing plates, and can directly reduce the mass by about 50%
ceramic matrix composites refer to the introduction of reinforcing materials into the ceramic matrix to form a composite
carbon ceramic composite
carbon ceramic composite
material with the introduced reinforcing material as the dispersed phase and the ceramic matrix as the continuous phasecomparison of preparation processes of ceramic matrix composites
chemical vapor infiltration (cvi)
during the preparation process, the fiber damage is small, the prepared ceramic matrix has high purity and complete crystal form, and the mechanical properties of the composite material are high1-2 μm is deposited on the carbon fiber preform by vapor deposition technology; phenolic resin, carbon black, ethanol, ultrafine silicon carbide powder, polyvinylpyrrolidone and tetramethylammonium hydroxide are prepared in proportion to make a mixed slurry; the slurry is pressurized and impregnated into the above-mentioned carbon fiber prefabricated body in a vacuum environment to obtain a composite material green body; the above-mentioned green body is heated and solidified; the cured green body is placed in a vacuum furnace for high-temperature siliconization reaction to obtain a high-density, high-performance carbon-silicon carbide ceramic composite materialunder the condition of no cooling structure, it can be used for a long time at 1200°c
high stabilitycontinuous fiber reinforced ceramic matrix composites have been widely used in aerospace, national defense and other fieldsin general, it is carried out in conjunction with other methodsin particular, it has a non-catastrophic fracture mode different from that of a single ceramic, which has attracted great attention from researchers all over the world
high temperature resistance
liquid silicon infiltration (lsi)
first, carbon fiber is woven into a three-dimensional fabric (hereinafter referred to as carbon fiber preform); a layer of simple silicon with a thickness of 0the working temperature of ceramic matrix composites is as high as 1650°c, which can simplify or even eliminate the cooling structure, optimize the engine structure, and increase the working temperature of the enginetubes, missile radomes, space shuttle nose cones, aircraft brake discs, and high-end automobile brake discs have become an important branch of the field of composite materialsit has the characteristics of high temperature resistance, wear resistance, high temperature creep resistance, low thermal conductivity, low thermal expansion coefficient, chemical corrosion resistance, high strength, high hardness and wave penetration, and is widely used in many fields such as aerospacethrough the optimization of the preparation process, especially the composition and structure design of the interface layer, the mechanical properties of ceramic matrix composites have been qualitatively improved compared with single-phase ceramicscom/news/ceramic-matrix-composite-cmc-material-professional-manufacturer-in-chinaceramic matrix composites can maintain high stability in high temperature environments, even in aerobic environments, which reduces the development and application costs of thermal protective coatingsit has high strength and high toughnesswith the advancement of fiber preparation technology and other related technologies, people have gradually developed effective methods for preparing such materials, making the preparation technology of fiber-reinforced ceramic matrix composites increasingly mature
excellent mechanical propertiesoverview of ceramic matrix composites——advantages
lightweightceramic matrix composites can be divided into two categories according to the continuity of the reinforcement: continuously reinforced composites and discontinuously reinforced composites
continuous fiber-reinforced ceramic matrix composites are the most outstanding type of materials in ceramic matrix
carbon ceramic composite c/sic
carbon ceramic composite c/sic
compositesIndia
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Our company can produce large amount of isostatic graphite material with stable and reliable quality
application of isostatic graphite material:
semiconductor monocrystalline silicon, polycrystalline silicon, ceramic sintering, electric spark machine, vacuum sintering furnace, electronic products, tungsten carbide sintering, vacuum furnace, diamond sintering, sealing products, graphite mold, metal smelting, continuous casting and mold manufacturing, metal smelting, glass, electronic industry, etc
we are manufacturer of graphite material and products in china, with stable and reliable quality05 11
ifs-w6 8 105 18
ifs-1b 14 105 11
sizes of isostatic graphite material: in mmour material: moled graphite, isostaitc graphite, vibration graphite, extruded graphite, mechanical graphite and carbon brush materialsφ567*520; φ558*521; φ650*470; φ755*638; φ560*560; φ550*630; φ630*1070; φ490*190; 755*365*365; 755*265*265; d680*800…
features of isostatic graphite material:
properties of isotropic, structural balance, high conductivity, high purity, high strength, high density, high mechanical strength; the superior thermal shock, high temperature resistance, resistance to oxidation and corrosion; fine-grained,, low receptivity, and easy for precision machining85 46 9–12 45 85 120 205 13
ifs-h6 14 1e （100-600）℃ (10-6/℃) ash content (％) porosity %
ifs-1a 14 1
all sizes available, standard bulk density: 168 51 13 38 86 085 65 11–13 51 115 85 591 70 11–13 60 135 85 5our products were sold throughout the country and exported to europe, america, southeast asia and other countries and regions which enjoy a high reputation all over the worldproducts: graphite rods, graphite pipes, mechanical seals and bearings, carbon brushes and graphite bipolar plate9 53 8–9 55 95 140 505 11
ifs-h7 8 191 53 8–9 58 100 140 578 56 9–10 43 85 0
data sheet as bellow:
type grain size um bulk density (g/cm3) hardness （shore） specific resistance (μω•m) bending strength (mpa) compressive strength (mpa) thermal conductivity (w/m•k）) c05 16
ifs-2a 12 104
ifs-2b 14 1
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