REFRACTORY CERAMIC COMPOSITES Types RS-99-45 and RS-99-60
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REFRACTORY CERAMIC COMPOSITES Types RS-99-45 and RS-99-60 ZIRCAR Refractory Composites, Inc. produces a comprehensive range of advanced high performance ceramic-ceramic composites and related products. Our materials are used around the world in demanding thermal, structural and electrical insulating applications at temperatures from 600°C(1112°F) to 1650°C(3002°F). For over twenty-five years we have been a problem solver working with many industries to resolve their thermal management problems. ZRCI Refractory Sheet Type RS-99-60 and RS-99-45 are comprised of 99% alumina. These “All-Alumina” materials are strong, uniform, rigid, refractory structure composed of alpha alumina fibers and high purity inorganic binders. Type RS-99-60 and RS-99-45 have a high purity alumina bond making them well suited for use in high vacuum and reducing enviroments where silica cannot be tolerated, such as power metal and MIM furnaces with H2 atmospheres. They also have high electrical resistivity at elevated temperatures allowing them to be used in direct contact with resistance heating elements. They exhibite superior hot strength and dimensional stability to 1650°C (3000°F). RS-99-60 has a density of 60 lbs/ft³ (1 gm/cc) and RS-9945 has a density of 45 lbs/ft³ (.72 gm/cc) ZRCI Refractory Sheet low density fiber reinforced ceramic composites are available as boards, cylinders and custom shapes. They have a fine open pore structure, high porosity and low thermal conductivity. These materials are fabricated as true composite laminates. They can be constructed into near net complex shapes. They can also be machined to tight exacting tolerances with ordinary shop tools and equipment. Their superior machinability and dimensional stability plus low heat capacity make them ideal for use as setters, supports and process fixtures in both continuous and batch firing furnaces. They contain no organic binders and will not smoke or produce odors when heated. They show excellent resistance to chemical attack and are not affected by oil or water. They are, however, affected by hydrofluoric acid, phosphorous acid and strong alkalis. SUGGESTED APPLICATIONS • • • • • • • • Primary thermal insulation in low mass furnaces and thermal process systems operating to 1650°C (3002°F) Thermal insulation, supports and process fixtures in Hot Isostatic Presses (HIP) furnaces and other thermal process systems operating to 1650°C (3002°F). High temperature setters, supports and process fixtures. Thermal insulation in bright annealing furnaces and other thermal process systems with hydrogen gas atmospheres operating to 1550°C (2822°F). Thermal insulation, supports and fixtures Solid Oxide Fuel Cells operating to 1550°C (2822°F). Backup thermal insulation in furnaces and thermal process systems operating to temperatures exceeding 2000°C (3632°F). Launders, distribution boxes, pouring spouts, hot tops and others involving molten metal contact. Electrical insulation in high temperature systems operating to 1550°C (2822°F). ZIRCAR Refractory Composites, Inc. P.O. BOX 489, FLORIDA, NY 10921-0489 Tele: (845) 651-2200, Fax: (845) 651-1515 e-mail: sales@zrci.com Home page: http://www.zrci.com Technical Data Bulletin No. ZRCI-040 January 2003 This information, which is subject to change, is offered solely for your consideration and should not be taken as a warranty or representation for which we assume legal responsibility. It is not to be understood as permission or recommendation to practice a patented invention without a license and the user should dete

REFRACTORY CERAMIC COMPOSITES Types RS-99-45 and RS-99-60 TYPE Nominal Composition, wt% Al2O3 Linear Shrinkage , % after 4 hrs. at 1200°C(2192°F) SiO2 Organic content Density, gm/cc(pcf) Porosity, % Max. Use Temp. *, °C(°F) Modulus of Rupture**, MPa(psi) Compressive Strength**, MPa (psi) at 10% compression Thermal Conductivity, W/m°K(BTU/hr. ft² °F/in) 427°C(800°F) 900°C(1652°F) 1200°C(2192°F) 1650°C(3992°F) Thermal Expansion, * Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the material experiences. **...