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Naslov:Evolution of chemically induced cracks in alkali feldspar: thermodynamic analysis
Avtorji:ID Abart, Rainer (Avtor)
ID Petrishcheva, Elena (Avtor)
ID Habler, Gerlinde (Avtor)
ID Sutter, Christoph (Avtor)
ID Fischer, Franz Dieter (Avtor)
ID Predan, Jožef (Avtor)
ID Kegl, Marko (Avtor)
ID Rammerstorfer, Franz G. (Avtor)
Datoteke:.pdf RAZ_Abart_Rainer_2022.pdf (2,79 MB)
MD5: 7A09D6C934EFF60EF404ED2B5D716A59
 
URL https://link.springer.com/article/10.1007/s00269-022-01183-9
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:A system of edge cracks was applied to polished (010) surfaces of K-rich gem-quality alkali feldspar by diffusion-mediated cation exchange between oriented feldspar plates and a Na-rich NaCl–KCl salt melt. The cation exchange produced a Na-rich layer at and beneath the specimen surface, and the associated strongly anisotropic lattice contraction lead to a tensile stress state at the specimen surface, which induced fracturing. Cation exchange along the newly formed crack flanks produced Na-enriched diffusion halos around the cracks, and the associated lattice contraction and tensile stress state caused continuous crack growth. The cracks nucleated with non-uniform spacing on the sample surface and quickly attained nearly uniform spacing below the surface by systematic turning along their early propagation paths. In places, conspicuous wavy cracks oscillating several times before attaining their final position between the neighboring cracks were produced. It is shown that the evolution of irregularly spaced towards regularly spaced cracks including the systematic turning and wavyness along the early propagation paths maximizes the rate of free energy dissipation in every evolutionary stage of the system. Maximization of the dissipation rate is suggested as a criterion for selection of the most probable evolution path for a system undergoing chemically induced diffusion mediated fracturing in an anisotropic homogeneous brittle material.
Ključne besede:chemically induced fracturing, alkali feldspar, crack spacing, wavy cracks, dissipation rate, thermodynamic extremal principle
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.05.2022
Leto izida:2022
Št. strani:15 str.
Številčenje:Vol. 49, art. no. 14
PID:20.500.12556/DKUM-84738 Novo okno
UDK:539.3
COBISS.SI-ID:106807299 Novo okno
DOI:10.1007/s00269-022-01183-9 Novo okno
ISSN pri članku:1432-2021
Datum objave v DKUM:17.07.2023
Število ogledov:299
Število prenosov:31
Metapodatki:XML DC-XML DC-RDF
Področja:Ostalo
:
ABART, Rainer, PETRISHCHEVA, Elena, HABLER, Gerlinde, SUTTER, Christoph, FISCHER, Franz Dieter, PREDAN, Jožef, KEGL, Marko in RAMMERSTORFER, Franz G., 2022, Evolution of chemically induced cracks in alkali feldspar: thermodynamic analysis. Physics and chemistry of minerals [na spletu]. 2022. Vol. 49, no. 14. [Dostopano 30 marec 2025]. DOI 10.1007/s00269-022-01183-9. Pridobljeno s: https://dk.um.si/IzpisGradiva.php?lang=slv&id=84738
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Gradivo je del revije

Naslov:Physics and chemistry of minerals
Skrajšan naslov:Phys. chem. miner.
Založnik:Springer
ISSN:1432-2021
COBISS.SI-ID:513719065 Novo okno

Gradivo je financirano iz projekta

Financer:FWF - Austrian Science Fund
Program financ.:Internationale Projekte
Številka projekta:I 4404
Naslov:Diffusion-diffusive phase transformations in alkali feldspar

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:kemično povzročeno lomljenje, alkalni feldspar, razmik razpok, valovite razpoke, stopnja disipacije, termodinamično ekstremno načelo


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