Low-temperature nitriding of iron through a thin nickel layer

Autor:	A. M. Vredenberg, D.O Boerma, M. H. Pröpper, W.M. Arnoldbik, D. K. Inia
Přispěvatelé:	Faculty of Science and Engineering
Předmět:	inorganic chemicals Materials science Physics and Astronomy (miscellaneous) Hydrogen SURFACES Metallurgy chemistry.chemical_element Nitride HYDROGEN Oxygen Catalysis Nickel REDUCTION chemistry Chemical engineering Impurity FE(100) Layer (electronics) Nitriding
Zdroj:	ResearcherID Applied Physics Letters, 70(10), 1245-1247
ISSN:	0003-6951
Popis:	We present a new method for nitriding iron at low temperatures. First, iron is coated with a thin layer of nickel (similar to 36 nm), after which it is exposed to an NH3 atmosphere at temperatures below 300 degrees C. Underneath the nickel layer epsilon-Fe3-xN is formed at temperatures as low as 225 degrees C, while uncovered iron samples show a large uptake of oxygen after the same treatment. The nickel layer prevents the oxidation of iron by impurities in the NH3 gas, and acts as a catalyst for the decomposition of NH3. After decomposition the atomic nitrogen diffuses through the nickel layer towards the iron. With the process described, pore-free iron nitrides can be formed at low temperatures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9a1113ed7f8afb77d043eda08a8c65f http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:A1997WL86500020&KeyUID=WOS:A1997WL86500020 Zobrazit plný text záznamu