The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F11%3A00049764" target="_blank" >RIV/00216224:14740/11:00049764 - isvavai.cz</a>
Alternative codes found
RIV/68081723:_____/11:00366251
Result on the web
<a href="http://dx.doi.org/10.1016/j.pmatsci.2011.01.008" target="_blank" >http://dx.doi.org/10.1016/j.pmatsci.2011.01.008</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.pmatsci.2011.01.008" target="_blank" >10.1016/j.pmatsci.2011.01.008</a>

Result language
angličtina
Original language name
The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel
Original language description
We present a theoretical study of segregation of sp-elements (Al, Si, P, S,Ga, Ge, As, Se, In, Sn, Sb and Te) at the Sigma5(210) grain boundary (GB) and (210) free surface (FS) in fcc ferromagnetic Ni. Whereas there is a slight enhancement of magnetization at the clean GB and FS with respect to bulk nickel (3?7% and 24%, respectively), the studied impurities entirely kill or strongly reduce ferromagnetism at the GB/FS and in its vicinity so that magnetically dead layers are formed. This effect is due tothe hybridization of the impurity sp-states and Ni d-states. We determine the preferred segregation sites at the Sigma5(210) GB for the sp-impurities, their segregation enthalpies and strengthening/embrittling energies with their chemical and mechanicalcomponents. We find interstitially segregated Si and P and substitutionally segregated Al as a GB cohesion enhancer and interstitially segregated S, Ge, As, Se and substitutionally segregated Ga, In, Sn, Sb and Te as GB embrittlers in Ni
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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