Deposition, Morphological, and Mechanical Evaluation of W and Be-Al2O3 and Er2O3 Co-Sputtered Films in Comparison with Pure Oxides

Compact and defect-free high melting point oxide strengthened metallic matrix configurations are promising to resolve the hydrogen permeation and brittleness issues relevant to the fusion research community. Previous studies on oxide addition to metallic matrix demonstrated a mitigation in brittlene...

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Autores principales:	Mihail Lungu, Cornel Staicu, Flaviu Baiasu, Alexandru Marin, Bogdan Butoi, Daniel Cristea, Oana Gloria Pompilian, Claudiu Locovei, Corneliu Porosnicu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	DC and RF magnetron sputtering plasma metal oxide thin and compact films morphology and roughness chemical state crystalline structure coating hardness and adhesion Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/4df699625d704d08b6b3241db7353291
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spelling	oai:doaj.org-article:4df699625d704d08b6b3241db73532912021-11-25T17:17:10ZDeposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides10.3390/coatings111114302079-6412https://doaj.org/article/4df699625d704d08b6b3241db73532912021-11-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1430https://doaj.org/toc/2079-6412Compact and defect-free high melting point oxide strengthened metallic matrix configurations are promising to resolve the hydrogen permeation and brittleness issues relevant to the fusion research community. Previous studies on oxide addition to metallic matrix demonstrated a mitigation in brittleness behavior, while deposition techniques and material configurations are still to be investigated. Thus, here, we report the structural, morphological, and mechanical characterization of metal-oxides thin layers co-deposited by radio frequency (RF)and direct current (DC) magnetron sputtering. A total of six configurations were deposited such as single thin layers of oxides (Al<sub>2</sub>O<sub>3</sub>, Er<sub>2</sub>O<sub>3</sub>) and co-deposition configurations as metal-oxides (W, Be)—(Al<sub>2</sub>O<sub>3</sub>, Er<sub>2</sub>O<sub>3</sub>). The study of films roughness by atomic force microscopy (AFM) method show that for Al<sub>2</sub>O<sub>3</sub> metallic-oxides is increased to an extent that could favor gaseous trapping, while co-depositions with Be seem to promote an increased roughness and defects formation probability compared to W co-depositions. Lower elastic modulus on metal-oxide co-depositions was observed, while the indentation hardness increased for Be and decreased for W matrix configurations. These outputs are highly relevant for choosing the proper compact and trap-free configuration that could be categorized as a permeation barrier for hydrogen and furtherly studied in laborious permeation yield campaigns.Mihail LunguCornel StaicuFlaviu BaiasuAlexandru MarinBogdan ButoiDaniel CristeaOana Gloria PompilianClaudiu LocoveiCorneliu PorosnicuMDPI AGarticleDC and RF magnetron sputtering plasmametal oxide thin and compact filmsmorphology and roughnesschemical statecrystalline structurecoating hardness and adhesionEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1430, p 1430 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	DC and RF magnetron sputtering plasma metal oxide thin and compact films morphology and roughness chemical state crystalline structure coating hardness and adhesion Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	DC and RF magnetron sputtering plasma metal oxide thin and compact films morphology and roughness chemical state crystalline structure coating hardness and adhesion Engineering (General). Civil engineering (General) TA1-2040 Mihail Lungu Cornel Staicu Flaviu Baiasu Alexandru Marin Bogdan Butoi Daniel Cristea Oana Gloria Pompilian Claudiu Locovei Corneliu Porosnicu Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
description	Compact and defect-free high melting point oxide strengthened metallic matrix configurations are promising to resolve the hydrogen permeation and brittleness issues relevant to the fusion research community. Previous studies on oxide addition to metallic matrix demonstrated a mitigation in brittleness behavior, while deposition techniques and material configurations are still to be investigated. Thus, here, we report the structural, morphological, and mechanical characterization of metal-oxides thin layers co-deposited by radio frequency (RF)and direct current (DC) magnetron sputtering. A total of six configurations were deposited such as single thin layers of oxides (Al<sub>2</sub>O<sub>3</sub>, Er<sub>2</sub>O<sub>3</sub>) and co-deposition configurations as metal-oxides (W, Be)—(Al<sub>2</sub>O<sub>3</sub>, Er<sub>2</sub>O<sub>3</sub>). The study of films roughness by atomic force microscopy (AFM) method show that for Al<sub>2</sub>O<sub>3</sub> metallic-oxides is increased to an extent that could favor gaseous trapping, while co-depositions with Be seem to promote an increased roughness and defects formation probability compared to W co-depositions. Lower elastic modulus on metal-oxide co-depositions was observed, while the indentation hardness increased for Be and decreased for W matrix configurations. These outputs are highly relevant for choosing the proper compact and trap-free configuration that could be categorized as a permeation barrier for hydrogen and furtherly studied in laborious permeation yield campaigns.
format	article
author	Mihail Lungu Cornel Staicu Flaviu Baiasu Alexandru Marin Bogdan Butoi Daniel Cristea Oana Gloria Pompilian Claudiu Locovei Corneliu Porosnicu
author_facet	Mihail Lungu Cornel Staicu Flaviu Baiasu Alexandru Marin Bogdan Butoi Daniel Cristea Oana Gloria Pompilian Claudiu Locovei Corneliu Porosnicu
author_sort	Mihail Lungu
title	Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
title_short	Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
title_full	Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
title_fullStr	Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
title_full_unstemmed	Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides
title_sort	deposition, morphological, and mechanical evaluation of w and be-al<sub>2</sub>o<sub>3</sub> and er<sub>2</sub>o<sub>3</sub> co-sputtered films in comparison with pure oxides
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4df699625d704d08b6b3241db7353291
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Deposition, Morphological, and Mechanical Evaluation of W and Be-Al<sub>2</sub>O<sub>3</sub> and Er<sub>2</sub>O<sub>3</sub> Co-Sputtered Films in Comparison with Pure Oxides

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