2007
DOI: 10.3989/cyv.2007.v46.i3.248
|View full text |Cite
|
Sign up to set email alerts
|

Estudio de un efecto alcalinotérreo mixto sobre algunas propiedades de vidrios del sistema CaO-MgO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>

Abstract: In the present work, we studied a "Mixed Alkaline-Earth Effect", i.e. the non-linear behaviour showed by the glass transition temperature as well as by the compressive strength of glasses of the CaO-MgO-Al 2 O 3 -SiO 2 system, when a part of the CaO contained in them was substituted by a BaO/SrO mixture, in variable molar proportions. An important factor for the occurrence of this phenomenon was the difference in atomic weight, ionic radii and field strength of the Ba 2+ and Sr 2+ ions in comparison with those… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
2
0
2

Year Published

2014
2014
2023
2023

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 9 publications
(5 citation statements)
references
References 19 publications
0
2
0
2
Order By: Relevance
“…They also believed that a formation of NBO-Ba-NBO bridges is responsible for the increase in the T g values when the BaO concentration rises-as it has been proposed earlier by Y. Hu, H-T. Tsai [20]. Then, M. Garza-García et al assumed that BaO acts like a stabilizer for the glassy matrix [19].…”
Section: Discussionmentioning
confidence: 78%
See 1 more Smart Citation
“…They also believed that a formation of NBO-Ba-NBO bridges is responsible for the increase in the T g values when the BaO concentration rises-as it has been proposed earlier by Y. Hu, H-T. Tsai [20]. Then, M. Garza-García et al assumed that BaO acts like a stabilizer for the glassy matrix [19].…”
Section: Discussionmentioning
confidence: 78%
“…On the other hand, considering the results of M. Garza-García et al [19], in silicate glasses, a kind of "stuffing effect" appears in samples with high BaO concentration caused by the big size of the Ba 2+ in the glass network. They also believed that a formation of NBO-Ba-NBO bridges is responsible for the increase in the T g values when the BaO concentration rises-as it has been proposed earlier by Y. Hu, H-T. Tsai [20].…”
Section: Discussionmentioning
confidence: 91%
“…Then, as we proposed in the Introduction section, this work has not found a straightforward relationship between the changes in the electrical response of this Tellurite glass and the ionic radius of the modifier oxide incorporated (as the expected behavior induced by modifier alkaline oxides, something that has been extensively discussed elsewhere) [26,27,28,29,30,31,32,33].This is a result that forces us to rethink the common expression for ionic conductivity: σ = q • N • μ (carrier charge; carrier concentration; carrier mobility); in which we assume that univalent and bivalent cations have the same behavior.…”
Section: Resultsmentioning
confidence: 83%
“…Ambos vidriados presentan cambios apreciables de aspecto cuando son sometidos al ataque de ácidos con una elevada concentración (Tabla 5.31). Dicho comportamiento se debe a que las fases cristalinas wollastonita y en menor medida anortita, fases presentes en proporciones notables en ambos vidriados, son atacadas con facilidad en ácidos fuertes, hecho, que ha sido documentado en la bibliografía (197,198,199,200) . Este es un comportamiento habitual observado en esmaltes mates de calcio en los que la presencia de anortita es elevada.…”
Section: Características Estéticas De Los Vidriados Obtenidosunclassified
“…No presentan cambios en el aspecto cuando se tratan con bases fuertes, aunque se aprecian ligeros cambios de aspecto cuando son tratados con ácido clorhídrico y láctico. Este comportamiento lo muestran los vidriados con una cantidad significativa de anortita y/o wollastonita en el vidriado final (196)(197)(198) ii. Para evaluar las propiedades mecánicas de los vidriados obtenidos como en casos anteriores, se seleccionaron los parámetros de dureza y tenacidad de los vidriados cuyos resultados se muestran en la Tabla 5.80. que los esmaltes son adecuados para el tipo de producto al que van destinados a gres porcelánico.…”
Section: Tabla 577 Coeficientes De Dilatación De Los Esmaltes Mab Y E...unclassified