Synergistic effect of three corrosion-resistant elements on corrosion resistance in concentrated hydrochloric acid

Authors
Katagiri, H Meguro, S Yamasaki, M Habazaki, H Sato, T Kawashima, A Asami, K Hashimoto, K
Citation
H. Katagiri et al., Synergistic effect of three corrosion-resistant elements on corrosion resistance in concentrated hydrochloric acid, CORROS SCI, 43(1), 2001, pp. 171-182
Citations number
32
Categorie Soggetti
Material Science & Engineering
Journal title
CORROSION SCIENCE
ISSN journal
0010938X → ACNP
Volume
43
Issue
1
Year of publication
2001
Pages
171 - 182
Database
ISI
SICI code
0010-938X(200101)43:1<171:SEOTCE>2.0.ZU;2-S
Abstract
The best combination of small additions of corrosion-resistant elements in enhancing the corrosion resistance in 6 M HCl open to air at 303 K is exami ned for amorphous Ni-16P-4B alloys by adding chromium, tantalum and molybde num The highest corrosion resistance is obtained by the additions of all th ree corrosion-resistant elements. The Ni-5Cr-5Ta-5Mo-16P-4B alloy is immune to corrosion. The most protective passive film for med on the Ni-5Cr-5Ta-( 3-5)Mo-16P-4B alloys consists of outer double oxyhydroxide of Ta5+ and Cr3 and inner Mo4+ oxide. (C) 2000 Elsevier Science Ltd. All rights reserved.