Effect of LiF on Hot-Pressing of MgO |
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| Authors: | MARK W. BENECKE NORMAN E. OLSON JOSEPH A. PASK |
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| Affiliation: | Inorganic Materials Research Division, Lawrence Radiation Laboratory, and Department of Mineral Technology, College of Engineering, University of California, Berkeley, California 94720 |
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| Abstract: | Transparent polycrystalline specimens can be fabricated from fine MgO powder with a small LiF addition by a two-step process: hot-pressing and heat-treating. The LiF addition allows MgO to be hot-pressed to near theoretical density at reduced temperatures and stresses. The stress-temperature-time conditions must be designed to attain a hot-pressed density of at least 99.5% of the theoretical density of MgO to obtain a transparent specimen during the subsequent heat treatment used in this study. Possible densification mechanisms are discussed. |
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