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Low-angle grain boundaries in synthetic calcite crystals

✍ Scribed by Dr. C. C. Desai


Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
278 KB
Volume
16
Category
Article
ISSN
0232-1300

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πŸ“œ SIMILAR VOLUMES


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## Abstract The main types of low‐angle boundaries (LAB) in single crystals with diamond‐type lattice are determined. The scheme of dislocation alignments formation in thermal stress field of growing crystal which allows to derive types of possible LAB and their distribution in crystal is proposed.

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## Abstract Natural single crystals of calcite have been cleaved along (100) planes and cleavage faces have been etched in 2% and 3% citric acid solutions. Etching produces twin boundaries oriented in γ€ˆ010〉 directions. The etch pits on the two sides of the twin boundary are oppositely oriented. It

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## Abstract Low‐angle boundaries in Si single crystals grown from the melt in [111], [100], [112], [110], [118] and [115] directions were investigated by chemical etching, copper decoration technique and X‐ray topography. β€” LAB of four types were found in planes parallel to the crystal growth axes.

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Ahatraet-A study has been made using transmission electron microscopy of the pinning of grain boundaries in aluminium during grain growth by fine dispersions of alumina particles. The boundary parameters have been determined with precision and the pinning effects measured using an approach due to As