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Product Name: Machining Machinable Glass Ceramic Bars Model NO.: GT-0073 Material: Alumina Cement Shape: Pipe Type: Heat-Resistant Material Feature: Long Time Materials Refractoriness (?): 1580< Refractoriness< 1770 Trademark: SHANGTAO Transport Package: Plywood Case Specification: RoHS Origin: Shanghai Product Description Provide customers a comprehensive purchasing platform of industrial and electric heat ceramic productsDescriptionGongtao offers precision metallized ceramic components for the military, medical, and aerospace industries. Through spray, needle, and brush coatings or screen printing our capabilities allow us to metallize on flat, cylindrical, and complex ceramic bodies. Moly-Manganese and Tungsten-Manganese are the typical base coat materials used for metallization.In order to achieve welding between ceramic and metal, the ceramic surface must be firmly glued to a layer of metal film, the ceramic metal. The ceramic surface of the metal, making it not only has the characteristics of ceramics, but also has properties of a composite material of metal, while the surface of ceramics can also be used in ceramic metal metal seal area. Our existing technics include: be silver, molybdenum and manganese method, gold-plated law, tin law, law and other nickel metal ceramic technology, according to customer requirements for ceramic metal processing.Product description:1. Raw material: 95% alumina oxide ceramics2. Ceramic body and metal layer with the degree of thermal expansion coefficient, and good for thermal shock performance.3. Continuous dense layer of metalized coating, no spots, no cracks, no bubbles or be oxidized.4. Outer layer and the solid metal have a good binding.5. Dense ceramic body, no deformation, no cracks.6. GonGTAO custom metallized ceramic prototype to high volume production capacitymetallized types (optional):Ceramic + Mn-Mo platingCeramic + Ni platingCeramic + AG platingCeramic + Au platingCeramic + Sn platingCeramic + AG+Ni+Au or Sn platingApplications:Feed-through insulators, Headers, High-power receptacles, Insulating discs, Insulator rings and cylinders, Precipitator products, Power switches, Traveling wave tubes, Vacuum interrupters, Windows, Power grid tubes, X-ray tubesItemStandard valueRemarksDensity2.6 g/m³Porosity0.069%Water absorption0Hardness4-5MohsColorPure whiteThermal expansion coefficient72×10 -7 /°C100°C ~600°C average valueThermal conductivity1.71W/m.k25°CWorking temperature800°CBending Strength>108MPaCompress strength>508 MPaImpact Toughness>2.56KJ/ m 2Modulus of elasticity65GPaInsertion loss1~ 4×10 -3Room temperatureDielectric constant6-7"Dielectric strength>40KV/mmThickness of sample 1mmBulk density1.08×10 16 Ω.cm25°C1.5×10 12 Ω.cm200°C1.1×10 9 Ω.cm500°CGas efficiency at normal temperature8.8×10 -9 ml/s. cm 2Vacuum experienced for eight hoursHelium permeatingrate1×10 -10 ml/sAfter 500C burning,cool to room temperature.5%HC10.26mg/ cm 295°C,24 hours5%HF83mg/ cm 2"
