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AlM2B2 (M = Cr, Mn,...
AlM2B2 (M = Cr, Mn, Fe, Co, Ni) : a group of nanolaminated materials
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- Kádas, Krisztina (author)
- Uppsala universitet,Materialteori
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- Iusan, Diana (author)
- Uppsala universitet,Materialteori
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- Hellsvik, Johan (author)
- KTH,Material- och nanofysik,Royal Inst Technol KTH, Sch Informat & Commun Technol, Dept Mat & Nanophys, Elect 229, S-16440 Kista, Sweden.
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- Cedervall, Johan (author)
- Uppsala universitet,Oorganisk kemi
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- Berastegui, Pedro (author)
- Uppsala universitet,Oorganisk kemi
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- Sahlberg, Martin, 1981- (author)
- Uppsala universitet,Oorganisk kemi
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- Jansson, Ulf, 1960- (author)
- Uppsala universitet,Oorganisk kemi
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- Eriksson, Olle, 1960- (author)
- Uppsala universitet,Materialteori
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(creator_code:org_t)
- Institute of Physics Publishing (IOPP), 2017
- 2017
- English.
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In: Journal of Physics. - : Institute of Physics Publishing (IOPP). - 0953-8984 .- 1361-648X. ; 29:15
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Combining theory with experiments, we study the phase stability, elastic properties, electronic structure and hardness of layered ternary borides AlCr2B2, AlMn2B2, AlFe2B2, AlCo2B2, and AlNi2B2. We find that the first three borides of this series are stable phases, while AlCo2B2 and AlNi2B2 are metastable. We show that the elasticity increases in the boride series, and predict that AlCr2B2, AlMn2B2, and AlFe2B2 are more brittle, while AlCo2B2 and AlNi2B2 are more ductile. We propose that the elasticity of AlFe2B2 can be improved by alloying it with cobalt or nickel, or a combination of them. We present evidence that these ternary borides represent nanolaminated systems. Based on SEM measurements, we demonstrate that they exhibit the delamination phenomena, which leads to a reduced hardness compared to transition metal mono-and diborides. We discuss the background of delamination by analyzing chemical bonding and theoretical work of separation in these borides.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- nanolaminated ternary borides
- phase stability
- elastic constants
- hardness
- scanning electron microscopy
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Kádas, Krisztina
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Iusan, Diana
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Hellsvik, Johan
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Cedervall, Johan
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Berastegui, Pedr ...
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Sahlberg, Martin ...
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show more...
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Jansson, Ulf, 19 ...
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Eriksson, Olle, ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Journal of Physi ...
- By the university
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Royal Institute of Technology
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Uppsala University