Thermally activated transformations in metastable alumina coatings prepared by magnetron sputtering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43921137" target="_blank" >RIV/49777513:23520/14:43921137 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.surfcoat.2013.12.004" target="_blank" >http://dx.doi.org/10.1016/j.surfcoat.2013.12.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2013.12.004" target="_blank" >10.1016/j.surfcoat.2013.12.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermally activated transformations in metastable alumina coatings prepared by magnetron sputtering

Popis výsledku v původním jazyce

The present study focuses on characterization of transformation processes and understanding of transformation phenomena in magnetron sputtered alumina coatings with different as-deposited structures. Phase transformation sequences with thermodynamic andkinetic data were systematically analyzed by means of differential scanning calorimetry and ex-situ X-ray diffraction. It was found that thermal stability of a pure gamma-phase as-deposited structure exceeds 1100 °C. On the contrary, an amorphous as-deposited structure is thermally stable to approximately 900 °C when the amorphous to gamma phase transformation starts proceeding. Independently of as-deposited structure, the metastable gamma phase transforms to the stable alpha phase at temperature of approximately 1200 °C. Further, it was shown that the changes in transformation enthalpies for all observed transformations are close to each other while the kinetic of the phase transformations is influenced by the as-deposited structure of

Název v anglickém jazyce

Thermally activated transformations in metastable alumina coatings prepared by magnetron sputtering

Popis výsledku anglicky

The present study focuses on characterization of transformation processes and understanding of transformation phenomena in magnetron sputtered alumina coatings with different as-deposited structures. Phase transformation sequences with thermodynamic andkinetic data were systematically analyzed by means of differential scanning calorimetry and ex-situ X-ray diffraction. It was found that thermal stability of a pure gamma-phase as-deposited structure exceeds 1100 °C. On the contrary, an amorphous as-deposited structure is thermally stable to approximately 900 °C when the amorphous to gamma phase transformation starts proceeding. Independently of as-deposited structure, the metastable gamma phase transforms to the stable alpha phase at temperature of approximately 1200 °C. Further, it was shown that the changes in transformation enthalpies for all observed transformations are close to each other while the kinetic of the phase transformations is influenced by the as-deposited structure of

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F12%2F0393" target="_blank" >GAP108/12/0393: Tvrdé nanokompozitní vrstvy se zvýšenou houževnatostí a unikátními vlastnostmi</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Surface & Coatings Technology

ISSN

0257-8972

e-ISSN

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Svazek periodika

2014

Číslo periodika v rámci svazku

240

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

7-13

Kód UT WoS článku

000331989900002

EID výsledku v databázi Scopus

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