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Ceramics: Materials
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The 20th century has produced the greatest advancement in ceramics and materials technology since humans have been capable of conceptive thought. The extensive metallurgical developments in this period have now produced almost every conceivable combination of metal alloys and the capabilities of those alloys are fairly well known and exploited. The push for ever faster, more efficient, less costly production techniques continues today. As the limits of metal-based systems are surpassed, new materials capable of operating under higher temperatures, higher speeds, longer life factors and lower maintenance costs are required to maintain pace with technological advancements. Metals, by virtue of their unique properties: ductility, tensile strength, abundance, simple chemistry, relatively low cost of production, case of forming, case of joining, etc. have occupied the vanguard position in regard to materials development.
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Recently, there have been advances in ceramics which include bio-ceramics, such as dental implants and synthetic bones. Hydroxyapatite, the natural mineral component of bone, has been made synthetically from a number of biological and chemical sources and can be formed into ceramic materials. Orthopedic implants made from these materials bond readily to bone and other tissues in the body without rejection or inflammatory reactions. Because of this, they are of great interest for gene delivery and tissue engineering scaffolds. Most hydroxy apatite ceramics are very porous and lack mechanical strength and are used to coat metal orthopedic devices to aid in forming a bond to bone or as bone fillers. They are ... used as fillers for orthopedic plastic screws to aid in reducing the inflammation and increase absorption of these plastic materials.
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Superconductive Components, Inc., dba SCI Engineered Materials, manufactures ceramics and metals for advanced applications such as thin film batteries, superconductors, and advanced optical systems. SCI Engineered Materials ... provides materials for thin film applications used in photovoltaic, electronic switches, hardness and decorative coatings. SCI Engineered Materials is a global materials supplier with clients in more than 40 countries. Additional information is available at http://www.sciengineeredmaterials.com.
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Art 126 is a beginning course in ceramics. The student is expected to develop skills in various forming methods. Sensitivity to the materials, to aesthetic design, and to individual and imaginative use of the materials is expected.
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ANSYS users can import material properties from a growing collection of more than 55,000 material data sheets from MatWeb including hundreds of various metals, plastics and ceramics. These data sheets include precise descriptions of material properties, the majority of which originate from testing by the manufacturers.
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This term refers to those materials, such as porous ceramics and metals, that have a natural ability to fill pores by capillary action. This means the pores and channels of a ceramic have a highly charged pore surface that attracts and bonds the polar molecules of water and other polar fluids. The net effect is called "wicking" the ability to pull fluids into the material and transport that fluid by capillary forces. Soilmoisture ceramics are all hydrophilic.
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