Published May 31, 1979
| Version v1
Patent
Open
Chemical etching technique for monocrystals based on beryllium oxide
Description
A chemical etching technique for chrysoberyl monocrystals (BeAl2O4) to reveal and identify different defects of crystal structure is proposed. The technique consists in chemical polishing of samples in a sodium metaphosphate melt at 900-1000 deg C during 30-40 min and selective etching in a caustic potassium melt at 360-400 deg C during 5-20 min. Using light microscopy the structural defect density is estimated through etched pits
Availability note (English)
MF available from INIS under the Report Number.Files
15046053.pdf
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Additional details
Additional titles
- Original title (Russian)
- Способ химического травления монокристаллов на основе окиси бериллия
Publishing Information
- Imprint Pagination
- 5 p.
- IPC:
- Int. Cl. C 30B 33/00; C 30B 29/22.
- IPC
- Int. Cl. C 30B 33/00; C 30B 29/22.
- Patent number
- SU patent document 1006552/A/
INIS
- Country of Publication
- USSR
- Country of Input or Organization
- USSR
- INIS RN
- 15046053
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; BERYLLIUM OXIDES; CHEMICAL POLISHING; CRYSTAL DEFECTS; ETCHING; MOLTEN SALTS; MONOCRYSTALS; POTASSIUM HYDROXIDES; SODIUM PHOSPHATES
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BERYLLIUM COMPOUNDS; CHALCOGENIDES; CRYSTAL STRUCTURE; CRYSTALS; HYDROGEN COMPOUNDS; HYDROXIDES; OXIDES; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; POLISHING; POTASSIUM COMPOUNDS; SALTS; SODIUM COMPOUNDS; SURFACE FINISHING
Optional Information
- Notes
- 1 tab.