High-Speed Anode Dissolution of Heat-Resistant Chrome–Nickel Alloys Containing Tungsten and Rhenium: III. Chloride–Nitrate Solutions
Închide
Conţinutul numărului revistei
Articolul precedent
Articolul urmator
321 2
Ultima descărcare din IBN:
2019-01-05 16:27
SM ISO690:2012
DIKUSAR, Alexandr; IVANENKOV, I; SAUSHKIN, Boris; SILKIN, Serghei; YUSHCHENKO, S.P.. High-Speed Anode Dissolution of Heat-Resistant Chrome–Nickel Alloys Containing Tungsten and Rhenium: III. Chloride–Nitrate Solutions . In: Surface Engineering and Applied Electrochemistry. 2007, nr. 4(43), pp. 231-238. ISSN 1068-3755.
EXPORT metadate:
Google Scholar
Crossref
CERIF
BibTeX
DataCite
Dublin Core
Surface Engineering and Applied Electrochemistry
Numărul 4(43) / 2007 / ISSN 1068-3755 /ISSNe 1934-8002

High-Speed Anode Dissolution of Heat-Resistant Chrome–Nickel Alloys Containing Tungsten and Rhenium: III. Chloride–Nitrate Solutions

Pag. 231-238

Dikusar Alexandr1, Ivanenkov I, Saushkin Boris, Silkin Serghei2, Yushchenko S.P.
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 T.G. Shevchenko State University of Pridnestrovie, Tiraspol
 
Disponibil în IBN: 28 noiembrie 2013


Rezumat

The anodic dissolution rates of two heat-resistant tungsten (12 wt %) and tungsten and rhenium (8 wt % W : 6 wt % Re) alloys in chloride, nitrate, and chloride–nitrate (30 g/l NaCl : 120 g/l NaNO3) electrolytes have been compared. An excess of the critical current density icrit depending on the hydrodynamic conditions leads to (i) the decreasing dependence of the current efficiency on the current density and (ii) the independence of the dissolution rate on the solution content. The mass-transfer mechanism, which determines the dissolution rate and the structure of superficial layers at i > icrit, is discussed. Data on the chemical content of the surface layers depending on the machining modes are presented. The modes of the electrochemical dimensional machining (ECDM) of the parts made of these alloys are offered to attain the best performance parameters for machining.