Thermal properties and crystallization of MgO-FeOx-P2O5 glassess

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912724" target="_blank" >RIV/00216275:25310/18:39912724 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s10973-018-6981-9" target="_blank" >http://dx.doi.org/10.1007/s10973-018-6981-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-018-6981-9" target="_blank" >10.1007/s10973-018-6981-9</a>

Result language

angličtina

Original language name

Thermal properties and crystallization of MgO-FeOx-P2O5 glassess

Original language description

Differential scanning calorimetry (DSC), dilatometry (TD) and X-ray diffraction have been used to study thermal behaviour and stability of glasses prepared simultaneously in Al2O3 or Pt crucibles in compositional series (40-x)MgO-xFe2O3-60P2O5 within the concentration range of x=0-40 mol% Fe2O3. Mössbauer spectra showed that all glasses with Fe2O3 contained both Fe(II) and Fe(III) ions. The contamination glasses from alumina crucibles ranged from 0.3 to 0.9 mol% Al2O3. The replacement of MgO by Fe2O3 resulted in a gradual decrease of glass transition temperature and dilatometric softening temperature, whereas thermal expansion coefficient did not changes significantly. The DSC curves showed that all glasses crystallize on heating in the broad temperature range 560-900oC. Crystallization temperature decreases with increasing Fe2O3 content. The highest tendency towards crystallization was found for the glass containing 40 mol% Fe2O3. X-ray diffraction measurements showed that the major compounds formed by glass crystallization were Mg(PO3)2, Fe(PO3)3, Fe3(P2O7)2 and FePO4. All thermoanalytical studies showed differences in thermal behaviour of glasses prepared in Al2O3 or Pt crucibles.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Volume of the periodical

132

Issue of the periodical within the volume

2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

843-850

UT code for WoS article

000428957300004

EID of the result in the Scopus database

2-s2.0-85040773406