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|Title:||Effect of Impurities on the Strength of CaF₂ Single Crystals|
|Department:||Metallurgy and Materials Science|
|Keywords:||Materials Science and Engineering;Metallurgy;Materials Science and Engineering|
|Abstract:||<p>Pure and doped CaF₂ single crystals were grown from melts by Czochralski technique. The doped crystals contained two levels of Na⁺, K⁺, V³⁺ and Y³⁺ impurities. The crystals were subsequently annealed and analysed for impurities. Samples were mechanically tested in compression at 450 and 600°C, and the 0.1% proof stress noted. An attempt was made to explain the observed hardening by Fleischer's theory of solid solution hardening in the case of V³⁺ and Y³⁺ -doped CaF₂ and by precipitation hardening theory in the case of Na⁺ and K⁺ -doped crystals.</p>|
|Appears in Collections:||Open Access Dissertations and Theses|
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