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SOL GEL [1 record]
Record 1 - internal organization data 2009-10-09
Record 1, English
Record 1, Subject field(s)
- Chemical Engineering
Record 1, Main entry term, English
- sol-gel process
1, record 1, English, sol%2Dgel%20process
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- sol-gel method 1, record 1, English, sol%2Dgel%20method
correct
- sol-gel 2, record 1, English, sol%2Dgel
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A chemical synthesis technique for preparing gels, glasses, and ceramic powders. 3, record 1, English, - sol%2Dgel%20process
Record number: 1, Textual support number: 1 OBS
The sol-gel process generally involves the use of metal alkoxides, which undergo hydrolysis and condensation polymerization reactions to give gels. The production of glasses by the sol-gel method permits preparation of glasses at far lower temperatures than is possible by using conventional melting. It also makes possible synthesis of compositions that are difficult to obtain by conventional means because of problems associated with volatilization, high melting temperatures, or crystallization. 3, record 1, English, - sol%2Dgel%20process
Record 1, Key term(s)
- sol gel process
- sol gel method
- sol gel
Record 1, French
Record 1, Domaine(s)
- Génie chimique
Record 1, Main entry term, French
- méthode sol-gel
1, record 1, French, m%C3%A9thode%20sol%2Dgel
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Méthode sol-gel. Pour produire un guide optique ou un verre massif, différents procédés peuvent être utilisés. Parmi ces techniques, le procédé sol-gel est sans doute le plus simple et le moins onéreux. La méthode est basée sur l'utilisation d'un sol obtenu à partir de précurseurs d'alkoxydes métalliques ou organométalliques. Ce sol, solution contenant des particules en suspension, polymérise à basse température pour former un gel humide. Celui-ci sera densifié par recuit thermique pour donner un produit inorganique sous forme de gel sec, de verre ou de polycristal. Les atouts de la méthode sol-gel résident dans sa versatilité et dans la possibilité d'obtenir des matériaux de grande pureté (sous forme de blocs monolithiques, de poudres ou de couches minces), dont la composition est parfaitement contrôlée. 2, record 1, French, - m%C3%A9thode%20sol%2Dgel
Record 1, Spanish
Record 1, Textual support, Spanish
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