Corrosion Behavior of Tantalum and Niobium in Hydrobromic Acid Solutions (II) on Passive Films and Hydrogen Absorption

CORROSION ◽  
1989 ◽  
Vol 45 (7) ◽  
pp. 548-553 ◽  
Author(s):  
I. Uehara ◽  
T. Sakai ◽  
H. Ishikawa ◽  
H. Takenaka
CORROSION ◽  
1986 ◽  
Vol 42 (8) ◽  
pp. 492-498 ◽  
Author(s):  
I. Uehara ◽  
T. Sakai ◽  
H. Ishikawa ◽  
E. Ishii ◽  
M. Nakane

Author(s):  
V. Vignal ◽  
C. Voltz ◽  
S. Thiébaut ◽  
M. Demésy ◽  
O. Heintz ◽  
...  

AbstractThe microstructure of two sets of 316L alloys (SLM and wrought structure) is determined using SPECTROMAXx stationary metal analyzer, FE-SEM/EDS and XRD. The physical–chemical properties of the passive films are also investigated by means of XPS, Auger after sputtering and electrochemical impedance spectroscopy measurements. Differences and similarities between the two sets of alloys are then identified. The corrosion behavior of alloys is investigated in NaCl solution at the macro- and microscale (microcapillary technique). It was found that the inclusion/particles cleanliness is the first-order parameter explaining differences between 316L(WS) and 316L(SLM). In the absence of particles (pure matrix), the two sets of alloys have the same corrosion behavior. Residual stresses, the average grain size, the PREN and the passive films properties are of second order.


2012 ◽  
Vol 85 (4) ◽  
pp. 138-143
Author(s):  
Takehiro HAMAMURA ◽  
Masatoshi KUBOUCHI ◽  
Saiko AOKI ◽  
Osamu YOSHIDA ◽  
Tetsuya SAKAI

CORROSION ◽  
1960 ◽  
Vol 16 (2) ◽  
pp. 70t-72t ◽  
Author(s):  
DAVID SCHLAIN ◽  
CHARLES B. KENAHAN ◽  
WALTER L. ACHERMAN

Abstract Chemical and galvanic corrosion experiments at 35 C show that ductile vanadium is resistant to corrosion in substitute ocean water. It is also resistant in 60 percent sulfuric and 20 percent hydrochloric acids but corrodes rapidly in nitric acid solutions. Vanadium is less noble than stainless steel and copper and more noble than aluminum, magnesium and steel (SAE 4130) in substitute ocean water. 6.3.18


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