Subsolidus Area of the MgO-P2O5-Cr2O3 system: Synthesis, Properties and Application of Magnesium-chromium Phosphates as Colouring Substances
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39921881" target="_blank" >RIV/00216275:25310/24:39921881 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10973-023-12870-2" target="_blank" >https://link.springer.com/article/10.1007/s10973-023-12870-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-023-12870-2" target="_blank" >10.1007/s10973-023-12870-2</a>
Alternative languages
Result language
angličtina
Original language name
Subsolidus Area of the MgO-P2O5-Cr2O3 system: Synthesis, Properties and Application of Magnesium-chromium Phosphates as Colouring Substances
Original language description
Phase relations in the subsolidus area of the MgO-P2O5-Cr2O3 system were reinvestigated. The reactions were carried out by the method of multi-stage calcination of samples in the temperature range of 350-1150 °C. As a result of the conducted research, a new pyrophosphate with the formula Mg5Cr2(P2O7)4 was discovered. This compound, crystallizing in the orthorhombic system, most likely exhibits the Fe5(2+)Fe2(3+)(P2O7)4 structure. The infrared spectrum of the new pyrophosphate was presented. Mg5Cr2(P2O7)4 melts incongruently at 1330 °C depositing Mg3Cr4(PO4)6. The developed division of the MgO-P2O5-Cr2O3 system into subsidiary subsystems differs significantly from the one known from the literature. First of all, unlike in the literature, it takes into account the existence of the compound just discovered, as well as the other two phosphates, i.e. Mg3Cr4(PO4)6 and Cr2P4O13. The melting points of mixtures of phases coexisting in the equilibrium state were estimated by the pyrometric method. All phosphates (V) with mixed cations, i.e. Mg5Cr2(P2O7)4, Mg3Cr4(PO4)6 and MgCr2(P2O7)2, were tested for their use for colouring lead-free glaze fired once at 1050 °C. It turned out that the investigated phosphates act as dyes and ceramic layers of good quality and interesting colours were obtained. The optimal concentration of the applying phosphates was close to 3 mass%.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20303 - Thermodynamics
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermal Analysis and Calorimetry
ISSN
1388-6150
e-ISSN
1588-2926
Volume of the periodical
149
Issue of the periodical within the volume
19
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
10465-10475
UT code for WoS article
001156094400003
EID of the result in the Scopus database
2-s2.0-85185130969