Effect of Si addition on mechanical properties and high temperature oxidation resistance of Ti-B-Si hard coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43921178" target="_blank" >RIV/49777513:23520/14:43921178 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.surfcoat.2013.12.011" target="_blank" >http://dx.doi.org/10.1016/j.surfcoat.2013.12.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2013.12.011" target="_blank" >10.1016/j.surfcoat.2013.12.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Si addition on mechanical properties and high temperature oxidation resistance of Ti-B-Si hard coatings

Popis výsledku v původním jazyce

In this work, nanocrystalline Ti-B-Si coatings were prepared by magnetron sputtering using co-deposition from TiB2 and Si targets. A Si addition causes decrease of hardness and effective Young's elastic modulus of the coating. Annealing in high vacuum increases the content of crystalline TiB2 phase that in turn leads to enhanced hardness. High resolution thermogravimetry together with x-ray diffraction (XRD), electron probe microanalysis (EPMA), x-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) is used to investigate the processes associated with exposure to air at elevated temperatures. The formation of nanocrystalline Ti-Si-O oxide scale after exposure to air at 500 °C is related to B2O3 release. Increased Si content suppresses the growth of crystal phase and contributes to the high temperature oxidation resistance. At 800 °C the oxidized scale formed the layered structure of globular TiO2, columnar TiO2 and amorphous borosilicate.

Název v anglickém jazyce

Effect of Si addition on mechanical properties and high temperature oxidation resistance of Ti-B-Si hard coatings

Popis výsledku anglicky

In this work, nanocrystalline Ti-B-Si coatings were prepared by magnetron sputtering using co-deposition from TiB2 and Si targets. A Si addition causes decrease of hardness and effective Young's elastic modulus of the coating. Annealing in high vacuum increases the content of crystalline TiB2 phase that in turn leads to enhanced hardness. High resolution thermogravimetry together with x-ray diffraction (XRD), electron probe microanalysis (EPMA), x-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) is used to investigate the processes associated with exposure to air at elevated temperatures. The formation of nanocrystalline Ti-Si-O oxide scale after exposure to air at 500 °C is related to B2O3 release. Increased Si content suppresses the growth of crystal phase and contributes to the high temperature oxidation resistance. At 800 °C the oxidized scale formed the layered structure of globular TiO2, columnar TiO2 and amorphous borosilicate.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

—

Svazek periodika

2014

Číslo periodika v rámci svazku

240

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

48-54

Kód UT WoS článku

000331989900007

EID výsledku v databázi Scopus

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