SURFACE-COMPOSITION OF PTCO ALLOYS - RESULTS OF IMPROVED THERMODYNAMIC CALCULATIONS INCORPORATING DATA FROM A BULK CRITICAL-STATE

Authors
HOFER W MEZEY LZ
Citation
W. Hofer et Lz. Mezey, SURFACE-COMPOSITION OF PTCO ALLOYS - RESULTS OF IMPROVED THERMODYNAMIC CALCULATIONS INCORPORATING DATA FROM A BULK CRITICAL-STATE, Fresenius' journal of analytical chemistry, 358(1-2), 1997, pp. 169-170
Citations number
11
Categorie Soggetti
Chemistry Analytical
Journal title
Fresenius' journal of analytical chemistry → ACNP
ISSN journal
09370633
Volume
358
Issue
1-2
Year of publication
1997
Pages
169 - 170
Database
ISI
SICI code
0937-0633(1997)358:1-2<169:SOPA-R>2.0.ZU;2-A
Abstract
The new approach for the calculation of surface composition profiles o f binary alloys (MTCIP-2A: Modern Thermodynamic Calculation of Interfa ce Properties - Second Approximation), applied so far for low-index su rfaces of PtNi, PtCo and PtRh, is further improved and applied for PtC o, leading to a better overall agreement with the experimental data, e specially in the previously problematic case of Pt25Co75(111). For tha t, the Gibbsian thermodynamic conditions for critical states and other changes, such as the calculation of surface free energies (used here when improving the description of lattice distortion release), have be en included.