𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effect of composition on hydration kinetics in volcanic glasses: Implications for dating

✍ Scribed by A.P.W Hodder

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
314 KB
Volume
103
Category
Article
ISSN
0021-9797

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Homogeneity of water content in obsidian
Homogeneity of water content in obsidian from the coso volcanic field: Implications for obsidian hydration dating
✍ Christopher M. Stevenson; Elizabeth Knaus; James J. Mazer; John K. Bates πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 770 KB

Users of the obsidian hydration dating method have routinely assumed that artifacts which originate from the same geological flow will be of the same chemical composition and thus hydrate at the same rate under equivalent conditions of temperature and relative humidity. Recent laboratory experimenta

The Effect of Platinum on Diffusion Kine
The Effect of Platinum on Diffusion Kinetics in Ξ²-NiAl: Implications for Thermal Barrier Coating Lifetimes
✍ Kristen A. Marino; Emily A. Carter πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 560 KB

## Abstract Platinum is added to thermal barrier coatings (TBCs) as it is observed empirically to extend their lifetime, but the mechanism by which Pt acts is unknown. Since Pt has been proposed to alter diffusivities in NiAl, a key component of TBCs, we use first‐principles quantum mechanics calcu

The effect of platinum on Al diffusion k
The effect of platinum on Al diffusion kinetics in Ξ²-NiAl: Implications for thermal barrier coating lifetime
✍ Kristen A. Marino; Emily A. Carter πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 647 KB

First-principles density functional theory calculations are used to study Al diffusion in b-NiAl. The activation energy and diffusion constant pre-exponential factors are calculated for five previously postulated Al diffusion mechanisms: next-nearest-neighbor Al jumps, the triple defect mechanism an