Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Anodization behavior of barrier-type Al2O3 films in aqueous sulfonic surfactant electrolytes
Autore:
Shimada, A; Takeda, M; Sakakura, M; Suzuki, T; Naoi, K;
Indirizzi:
Tokyo Univ Agr & Technol, Dept Appl Chem, Tokyo 1848588, Japan Tokyo Univ Agr & Technol Tokyo Japan 1848588 Chem, Tokyo 1848588, Japan
Titolo Testata:
ELECTROCHEMISTRY
fascicolo: 2, volume: 69, anno: 2001,
pagine: 117 - 121
SICI:
1344-3542(200102)69:2<117:ABOBAF>2.0.ZU;2-R
Fonte:
ISI
Lingua:
JPN
Soggetto:
ALUMINUM; LAYERS;
Keywords:
aluminium oxide; sulfonic surfactant; anodization; hydrophile-lipophile balance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Naoi, K Tokyo Univ Agr & Technol, Dept Appl Chem, 2-24-16 Naka Cho, Tokyo 1848588,Japan Tokyo Univ Agr & Technol 2-24-16 Naka Cho Tokyo Japan 1848588 pan
Citazione:
A. Shimada et al., "Anodization behavior of barrier-type Al2O3 films in aqueous sulfonic surfactant electrolytes", ELECTROCH, 69(2), 2001, pp. 117-121

Abstract

Barrier-type Al2O3 films were formed in aqueous solution containing sulfonate-based electrolytes by anodization of aluminum substrate without any particular surface treatment on it. The galvanostatic formation behavior of such "barrier-type" Al2O3 films was studied by measuring anode potential-timecurves. As the electrolytes, the authors selected sodium salts of n-dodecylbenzenesulfonate (DBS), butylnaphthalenesulfonate (BNS), and n-dodecylsulfate(SDS), mono, di, and trivalent naphthalenesulfonates, sulfonate polymers, and inorganic sulfate. Among them, DBS and BNS showed high coulombic efficiency(eta >90%) to form a barrier-type Al2O3, which is comparable to that of ammonium adipate. The eta was found to be high when HLB (Hydrophile-Lipophile Balance) of sulfonates is less than 40. Above 40(HLB > 40), the eta became lower than 50%. It is concluded that higher hydrophobicity of the electrolyte leads to higher capability to form a barrier-type Al2O3.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/01/20 alle ore 16:34:12