985 resultados para Illinois Office of Education. Dept. of Planning, Research, and Evaluation. Research and Statistics Section
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Mode of access: Internet.
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Original in Great Britain India Office Library.
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A method has been developed to obtain quantitative information about grain size and shape from fractured surfaces of ceramic materials. One elaborated a routine to split intergranular and transgranular grains facets of ceramic fracture surfaces by digital image processing. A commercial ceramic (ALCOA A-16, Al2O3-1.5% of CrO) was used to test the proposed method. Microstructural measurements of grain shape and size taken from fracture surfaces have been compared through descriptive statistics of distributions, with the corresponding measurements from polished and etched surfaces. The agreement between results, with the expected bias on grain size values from fractures, obtained for both types of surfaces allowed to infer that this new technique can be used to extract the relevant microstructural information from fractured surfaces, thus minimising the time consuming steps of sample preparation. (C) 2003 Elsevier Ltd. All rights reserved.
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Blank forms in Chinese and English.
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Mode of access: Internet.
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Mode of access: Internet.
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"January 1993."
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Mode of access: Internet.
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"SRS 76-05704."
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Description based on: 6th ed, 1979.