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High-entropy alloy ...
High-entropy alloy inspired development of compositionally complex superhard (Hf,Ta,Ti,V,Zr)-B-N coatings
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- Kretschmer, Andreas (författare)
- TU Wien, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria.
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- Kirnbauer, Alexander (författare)
- TU Wien, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria.
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- Pitthan, Eduardo (författare)
- Uppsala universitet,Tillämpad kärnfysik
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- Primetzhofer, Daniel (författare)
- Uppsala universitet,Tillämpad kärnfysik,Tandemlaboratoriet
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- Yalamanchili, Kumar (författare)
- Oerlikon Surface Solut AG, Iramalli 18, FL-9496 Balzers, Liechtenstein.
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- Rudigier, Helmut (författare)
- Oerlikon Surface Solut AG, Iramalli 18, FL-9496 Balzers, Liechtenstein.;OC Oerlikon Management AG, CH-8808 Pfaffikon, SZ, Switzerland.
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- Mayrhofer, Paul Heinz (författare)
- TU Wien, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria.
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TU Wien, Inst Mat Sci & Technol, Getreidemarkt 9, A-1060 Vienna, Austria Tillämpad kärnfysik (creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
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Ingår i: Materials & design. - : Elsevier. - 0264-1275 .- 1873-4197. ; 218
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Phase stability and mechanical properties of multimetal-boronnitride (Hf,Ta,Ti,V,Zr)-B-N is investigated by ab initio computations and experimental methods. (Hf,Ta,Ti,V,Zr)-B-N shows a strong energetic preference for the fcc NaCl-type structure over other structures up to a B:N ratio of 3.5. Reactively deposited (Hf,Ta,Ti,V,Zr)-B-N coatings show formation of X-ray amorphous BN, accompanied by a drastic hardness decrease with increasing B content. But non-reactively sputtered (Hf,Ta,Ti,V,Zr)-B-N coatings exhibit a single-phase fcc solid solution, up to the maximum B:N ratio of 1.12 studied, in good agreement with calculations. All non-reactively sputtered multimetal-boronnitride coatings contain a high Zr metal-fraction and approximate to 8at% C, stemming from impurities in the target. The single-phase coatings reach superhardness up to 46.3 GPa. Even after vacuum annealing to 1200 degrees C, the hardness of the coating with a B:N ratio of 1.03 is still 43.7 GPa, while that of ZrN0.72C0.28 decreased from 36.3 to 30.2 GPa. Our results demonstrate the importance of the deposition technique to deposit single-phased coatings with exceptional hardness and thermal stability. (C) 2022 The Authors. Published by Elsevier Ltd.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- PVD
- DFT
- Boronnitrides
- Superhard materials
- Entropy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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