Silver tricalcium is a binary inorganic compound of silver and calcium with the formula Ca 3 Ag, crystals.
| Silver tricalcium | |
|---|---|
| General | |
| Systematic name | Silver tricalcium |
| Traditional names | Tricalcium silver |
| Chem. formula | Ca 3 Ag |
| Rat formula | AgCa 3 |
| Physical properties | |
| condition | crystals |
| Molar mass | 228.10 g / mol |
| Density | 2.7 g / cm³ |
| Thermal properties | |
| T. melt. | 484; 490 ° C |
| T. decomp. | 475 ° C |
| Enthalpy of Education | -11.0 [1] kJ / mol |
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Silver tricalcium forms crystals of rhombic syngony , space group P nma , cell parameters a = 0.799 nm , b = 0.686 nm , c = 1.017 nm , Z = 4 , structure of the type of triple iron carbide [2] [3] [4] [5] .
The compound melts congruently at a temperature of 460 ° C (484 ° C [1] ) or is formed by a peritectic reaction at a temperature of 475 ° C [5] .
Notes
- ↑ 1 2 P. Franke, D. Neuschütz. Ag-Ca (Silver - Calcium). Thermodynamic Properties of Inorganic Materials // Landolt-Börnstein - Group IV Physical Chemistry. - 2007.- T. 19B5 . - S. 1-4 . - DOI : 10.1007 / 978-3-540-45280-5_7 .
- ↑ State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
- ↑ B. Predel. Ag-Ca (Silver - Calcium). Supplement // Landolt-Börnstein - Group IV Physical Chemistry. - 2006. - T. 12A . - S. 1-2 . - DOI : 10.1007 / 10793176_23 .
- ↑ B. Predel. Ag-Ca (Silver-Calcium) // Landolt-Börnstein - Group IV Physical Chemistry. - 1991 .-- T. 5a . - S. 1-2 . - DOI : 10.1007 / 10000866_17 .
- ↑ 1 2 MR Baren. The Ag − Ca (Silver-Calcium) system // Bulletin of Alloy Phase Diagrams. - 1988. - T. 9 , No. 3 . - S. 228-231 . - DOI : 10.1007 / BF02881269 .