Method for preparing nonstoichiometric ratio magnesia alumina spinel single crystals
A non-stoichiometric ratio, magnesium-aluminum spinel technology, applied in chemical instruments and methods, single crystal growth, single crystal growth, etc., can solve the problems of high cost, difficult growth, and less use
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0030] MgO, Al 2 o 3 The high-purity raw materials are weighed according to the molar ratio of 1:1.5, and the total weight is 0.5Kg. After mechanically mixing evenly, use a press machine at 40kg / cm 2 It is pressed into a cake under a certain pressure and then sintered at 1200°C for 20 hours in a neutral nitrogen atmosphere. The furnace is evacuated and filled with high-purity nitrogen, and the temperature is raised to 1900°C to melt and prepare for growth. The pulling speed was 1 mm / h, and the rotation speed was 15 rpm. After growing the crystal, it was slowly lowered to room temperature, and the crystal was taken out. The crystals are colorless, transparent, complete and of good quality.
Embodiment 2
[0032] MgO, Al 2 o 3 The high-purity raw materials are weighed according to the molar ratio of 1:1.5, and the total weight is 1Kg. After mechanically mixing evenly, use a press machine at 20kg / cm 2 It is pressed into a cake under a certain pressure and then sintered at 1200°C for 10 hours in a neutral nitrogen atmosphere. The furnace is vacuumed and filled with high-purity argon, and the temperature is raised to 1900°C to melt and prepare for growth. The pulling speed was 1.5 mm / h, and the rotation speed was 10 rpm. After growing the crystal, it was slowly lowered to room temperature, and the crystal was taken out. The crystals are colorless, transparent, complete and of good quality.
Embodiment 3
[0034] MgO, Al 2 o 3 The high-purity raw materials are weighed according to the molar ratio of 1:2, and the total weight is 0.5Kg. After mechanically mixing evenly, use a press machine at 30kg / cm 2 It is pressed into a cake under a certain pressure and then sintered at 1400°C for 20 hours in a neutral nitrogen atmosphere. The furnace is vacuumed and filled with high-purity nitrogen, and the temperature is raised to 1900°C to melt and prepare for growth. The pulling speed was 1.5 mm / h, and the rotation speed was 15 rpm. After growing the crystal, it was slowly lowered to room temperature, and the crystal was taken out. The crystals are colorless, transparent, complete and of good quality.
PUM

Abstract
Description
Claims
Application Information

- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com