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Published in 2017 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-017-1383-8
Abstract: The highly calcic anorthosite (An>95) from the Sittampundi Layered Complex (SLC) develops corundum, spinel and sapphirine that are hitherto not reported from any anorthositic rocks in the world. Petrological observations indicate the following sequence of…
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Keywords:
anorthosite sittampundi;
corundum;
highly calcic;
calcic anorthosite ... See more keywords
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Published in 2020 at "Acta Materialia"
DOI: 10.1016/j.actamat.2020.06.056
Abstract: Abstract We demonstrate that the early-stage oxidation of a CoCrFeNi multi-principal element alloy depends upon competition between kinetic and thermodynamic factors involving the relative diffusion rate of cations and oxygen, and how this couples to…
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Keywords:
thermodynamics;
corundum;
stage oxidation;
early stage ... See more keywords
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Published in 2020 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2020.07.004
Abstract: Abstract Corundum abrasives with good chemical stability can be fabricated into various free abrasives and bonded abrasive tools that are widely used in the precision machining of various parts. However, these abrasives cannot satisfy the…
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Keywords:
corundum abrasives;
advances fabrication;
corundum;
ceramic corundum ... See more keywords
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Published in 2020 at "Geoscience frontiers"
DOI: 10.1016/j.gsf.2020.04.009
Abstract: Abstract The temperature dependence of the Al2O3 solubility in bridgmanite has been determined in the system MgSiO3–Al2O3 at temperatures of 2750–3000 K under a constant pressure of 27 GPa using a multi-anvil apparatus. Bridgmanite becomes…
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Keywords:
corundum;
bridgmanite;
solubility;
solubility bridgmanite ... See more keywords
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Published in 2018 at "Technical Physics Letters"
DOI: 10.1134/s1063785018020219
Abstract: We have studied the mechanical properties (Vickers microhardness HV and fracture toughness KC) of nanostructured CaO–ZrO2–Al2O3 ceramic composites as dependent on the content of corundum (0 ≤ $$C_{Al_{2}O_{3}}$$CAl2O3 ≤ 25%) and the temperature of sintering…
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Keywords:
ceramic composites;
zro2 al2o3;
corundum;
al2o3 ceramic ... See more keywords
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Published in 2019 at "Minerals"
DOI: 10.3390/min9010049
Abstract: Greece contains several gem corundum deposits set within diverse geological settings, mostly within the Rhodope (Xanthi and Drama areas) and Attico-Cycladic (Naxos and Ikaria islands) tectono-metamorphic units. In the Xanthi area, the sapphire (pink, blue…
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Keywords:
ppm;
corundum;
pink;
geology ... See more keywords
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Published in 2022 at "Polymers"
DOI: 10.3390/polym14112173
Abstract: Recycling corundum abrasive powder in metakaolin-based geopolymer formulations is proposed to reduce the amount of waste to be treated or disposed of in landfills, allowing to decrease ecological damage as well as to reduce transport…
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Keywords:
waste;
corundum;
corundum abrasive;
abrasive powder ... See more keywords
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Published in 2017 at "Canadian Mineralogist"
DOI: 10.3749/canmin.1700014
Abstract: Gem-quality (cabochon) ruby-bearing occurrences (here termed PAR-1 and PAR-5) located near Paranesti, north eastern Greece have been systematically studied for the first time in this paper. Tectonically, the occurrences are located within the Nestos Shear…
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Keywords:
schist hosted;
corundum;
hosted ruby;
ruby deposit ... See more keywords