IR Study of the Transformation of WF6 on a W Substrate

Autor:	V. V. Dushik, R. Kh. Zalavutdinov, N. V. Rozhanskii
Rok vydání:	2019
Předmět:	Materials science Hydrogen Infrared Substrate (chemistry) chemistry.chemical_element Chemical vapor deposition Tungsten 01 natural sciences 010305 fluids & plasmas Surfaces Coatings and Films Adsorption chemistry 0103 physical sciences Molecule Physical chemistry Thin film 010306 general physics
Zdroj:	Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 13:919-924
ISSN:	1819-7094 1027-4510
Popis:	A new IR-spectroscopy (infrared) technique allowing investigation of the transformation of gaseous WF6 on a W surface heated up to 860 K in a hydrogen and argon atmosphere is proposed. The weak chemical adsorption of WF6 on W substrates is observed. The intermediate reaction products of WF6 with solid W above 670 K are penta- and tetra-tungsten fluorides. The presence of other low-valent tungsten fluorides is possible in the form of adsorbed oligomeric molecules (dimers or trimers). It is shown that low-valent tungsten fluorides are strongly adsorbed on the surface of W. The adsorbed layers formed on the W substrate in the WF6 + H2 mixture and pure WF6 str identical in composition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d9b50c23cfe18dc72fe511ffce86835f https://doi.org/10.1134/s1027451019050264 Zobrazit plný text záznamu Full text from SpringerLink