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High Temperature Materials Laboratory (HTML) Helps solve materials problems that limit the efficiency and reliability of advanced energy conversion systems More information is available at www.ms.ornl.gov/htmlhome Department of Energy (DOE)-Oak Ridge National Laboratory (ORNL) The Laboratory is designed to help solve materials problems that limit the efficiency and reliability of advanced energy conversion systems. The HTML includes the six user centers which are available to researchers in industry, universities, and federal laboratories. The facility has two major objectives: - Conduct research that will assist U.S. industry in meeting challenges from foreign competitors in materials related to transportation. - Assist in educating and training materials researchers. Instruments available at the user centers have extensive capabilities for characterizing the microstructure, microchemistry, physical, and mechanical properties of materials over a wide range of temperatures: Materials Analysis User Center Atomic structure, Nano-scale composition, Surface morphology, Surface chemistry Mechanical Characterization and Analysis User Center The Mechanical Characterization and Analysis Group (MCAG) specializes in the the mechanical characterization of structural materials, including high-temperature materials. MCAG performs mechanical testing and analysis, develops test methods and supplemental analytical techniques, and conducts finite-element stress analyses and life-prediction analyses of monolithic ceramics, ceramic composites, and ceramic coatings. Numerous mechanical test frames are available to visiting researchers from industry and academia. Capabilities to conduct tension, compression, flexure and micromechanical tests in controlled environments and at elevated temperatures on standard and customized specimens. Staff has expertise with a wide range of materials, mechanical test designs, finite-element and analytical modeling, life-prediction analysis, statistical design, and failure analysis. Machining and Inspection Research User Center Performs research and development in machining, inspection, and tribology of ceramics and other high performance materials. Thermophysical Properties User Center Studies thermal stability, thermal expansion, specific heat, transformation temperatures, thermal diffusivity, and thermal conductivity of materials as a function of temperature and/or environment Residual Stress User Center The RSUC facilities include laboratory x-ray, synchrotron x-ray, and neutron diffraction instruments. Neutron diffraction is complementary to the traditional x-ray diffraction because of the great differences in a material's absorption of the two radiation types. Neutrons can penetrate many millimeters into most engineering materials, while x-rays are absorbed within a surface layer several micrometers thick. Thus, neutron diffraction can be used to probe strains throughout the volume of a material while X-rays are used to measure the strain in a shallow layer very near the surface. Diffraction (X-Ray and Neutron) User Center The Diffraction User Center includes both room temperature and furnace-equipped x-ray, synchrotron, and neutron diffractometers. The high temperature x-ray diffractometer is a theta-theta diffractometer (specimen remains horizontal at all times) with a specimen-heating furnace capable of operation at 3000 K and a position sensitive detector for high speed measurements. The X-ray furnace is used for studies of materials properties at temperatures up to 2700oC in vacuum and up to 1600oC in air. Keywords: Materials Sciences-Ceramics, refractories, and glass Resource tags: Expertise; Federal laboratories, centers, and facilities; User facility
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