Influence of overstoichiometric boron and titanium addition on the properties of RF magnetron sputtered tungsten borides

Tomasz Mościcki , Rafal Psiuk , Hanna Słomińska , Neonila Levintant-Zayonts , Dariusz Garbiec , Marcin Pisarek , Piotr Bazarnik , Szymon Nosewicz , Justyna Chrzanowska-Giżyńska

Abstract

In this work, (W,Ti)B2 films with different stoichiometric ratio Ti/W deposited on silicon and 304 stainless steel by radio frequency magnetron sputtering are presented. The coatings were deposited from plasma spark sintered targets obtained from the mixture of pure boron, tungsten and titanium powders. It is shown that during plasma spark sintering process using overstoichiometric boron and a low content of titanium change the WB2 to WB4 phase with almost no secondary phases. Subsequently, the impact of titanium content on the films properties is investigated systematically, including the chemical and phase composition, crystalline structure, surface and cross-section morphology. Simultaneously, nano-indentation test and ball-on-disk tribometery are performed to analyse the hardness and tribological properties of the films. It is shown that deposited films with titanium content of 3.6 and 5.5 at.% are formed in the zone T of the Thornton's Structural Zone Model. In opposite to α- WB2 magnetron sputtered coatings they are more flexible and hard nanocomposite coatings. The results show that the addition of titanium is apparently changing the film structure from nanocrystalline columnar to amorphous, very dense and compact structure with the addition of TiB2 phase. That films are simultaneously hard (H > 37.5 GPa), have high hardness to effective Young's modulus ratio values (H/E⁎ > 0.1) and elastic recovery (We > 60%) appropriate for tough and resistant to cracking materials. The presented (W,Ti)B2 films exhibit also tribological and corrosion properties better than unalloyed coatings.
Author Tomasz Mościcki - Institute of Fundamental Technological Research Polish Academy of Sciences (IPPT PAN) [Polish Academy of Sciences (PAN)]
Tomasz Mościcki,,
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, Rafal Psiuk
Rafal Psiuk,,
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, Hanna Słomińska
Hanna Słomińska,,
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, Neonila Levintant-Zayonts
Neonila Levintant-Zayonts,,
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, Dariusz Garbiec
Dariusz Garbiec,,
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, Marcin Pisarek - Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN) [Polish Academy of Sciences (PAN)]
Marcin Pisarek,,
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, Piotr Bazarnik (FMSE / DMD)
Piotr Bazarnik,,
- Division of Materials Design
, Szymon Nosewicz - Institute of Fundamental Technological Research Polish Academy of Sciences (IPPT PAN) [Polish Academy of Sciences (PAN)]
Szymon Nosewicz,,
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, Justyna Chrzanowska-Giżyńska - Institute of Fundamental Technological Research Polish Academy of Sciences (IPPT PAN) [Polish Academy of Sciences (PAN)]
Justyna Chrzanowska-Giżyńska,,
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Journal seriesSurface and Coatings Technology, [Surface and Coatings Technology], ISSN 0257-8972
Issue year2020
Vol390
Pages1-12
Publication size in sheets0.55
Article number125689
Keywords in EnglishSuperhard films; Ternary tungsten borides; RF magnetron sputtering; Wear resistance; Corrosion
ASJC Classification1600 General Chemistry; 2505 Materials Chemistry; 2508 Surfaces, Coatings and Films; 3104 Condensed Matter Physics; 3110 Surfaces and Interfaces
DOIDOI:10.1016/j.surfcoat.2020.125689
URL https://www.sciencedirect.com/science/article/pii/S0257897220303583
Languageen angielski
File
2.pdf 1.91 MB
Score (nominal)100
Score sourcejournalList
ScoreMinisterial score = 100.0, 09-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.359; WoS Impact Factor: 2018 = 3.192 (2) - 2018=3.11 (5)
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