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Titolo:
MORPHOLOGY AND IONIC-CONDUCTIVITY OF POTASSIUM-SAMARIUM-SILICATES K2O-SM2O3-NSIO(2) (N=1-14)
Autore:
NAKAYAMA S; SADAOKA Y;
Indirizzi:
SHINAGAWA REFRACTORIES CO LTD,NEW MAT RES CTR BIZEN 705 JAPAN EHIME UNIV,FAC ENGN,DEPT APPL CHEM MATSUYAMA EHIME 790 JAPAN
Titolo Testata:
Electrochimica acta
fascicolo: 15, volume: 40, anno: 1995,
pagine: 2541 - 2546
SICI:
0013-4686(1995)40:15<2541:MAIOPK>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLID ELECTROLYTES; SENSOR;
Keywords:
POTASSIUM IONIC CONDUCTOR; LANTHANOID SILICATE; ALKALI SILICATE; SOLID-STATE ELECTROLYTE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
S. Nakayama e Y. Sadaoka, "MORPHOLOGY AND IONIC-CONDUCTIVITY OF POTASSIUM-SAMARIUM-SILICATES K2O-SM2O3-NSIO(2) (N=1-14)", Electrochimica acta, 40(15), 1995, pp. 2541-2546

Abstract

Ceramic-glass composites may be produced directly by the sintering ofraw mixtures with high SiO2 content. The ionic conductivity is lowered by increasing the SiO2 content. With potassium content below 15 mol%, the activation energy of conduction decreases with the potassium content, which is attributable to a decreasing potassium jump distance. The activation energy of K2O-Ln(2)O(3)-nSiO(2) decreases with increasing radius of Ln from Dy to Sm and increases from Sm to La. This behavior is attributed to changes of the electrostatic binding and strain energies of mobile potassium. The elution of potassium with water is depressed by an increase in SiO2 content and by a decrease in radius of Ln.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 00:24:49