scholarly journals Corrosion Behavior of Bismuth in Concentrated Sulphuric Acid Solution and Stability of its Surface Oxide Film

2022 ◽  
pp. ArticleID:22012
Author(s):  
A S. Mogoda ◽  
Keyword(s):  
Oxide Film ◽  
Acid Solution ◽  
Sulphuric Acid ◽  
Corrosion Behavior ◽  
Sulphuric Acid Solution ◽  
Surface Oxide ◽  
Surface Oxide Film

scholarly journals Passivation-Induced Physicochemical Alterations of the Native Surface Oxide Film on 316L Austenitic Stainless Steel

2019 ◽  
Vol 166 (11) ◽  
pp. C3376-C3388 ◽  
Author(s):  
Zuocheng Wang ◽  
Francesco Di-Franco ◽  
Antoine Seyeux ◽  
Sandrine Zanna ◽  
Vincent Maurice ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Oxide Film ◽  
Surface Oxide ◽  
Surface Oxide Film ◽  
316L Austenitic Stainless Steel ◽  
Native Surface

Effect of hydride formation on corrosion behaviour of Zr–1%Nb alloy in sulphuric acid solution

2016 ◽  
Vol 51 (3) ◽  
pp. 195-200 ◽  
Author(s):  
I. M. Gharatloo ◽  
A. N. Golikand ◽  
M. B. Fathi ◽  
R. S. Gharabagh ◽  
I. Hasanzadeh
Keyword(s):  
Acid Solution ◽  
Sulphuric Acid ◽  
Corrosion Behaviour ◽  
Sulphuric Acid Solution ◽  
Hydride Formation

Study on Regeneration Ability of Oxidation Film on Ignition-Proof Magnesium Alloy Added with RE

2011 ◽  
Vol 284-286 ◽  
pp. 1665-1670
Author(s):  
Zheng Hua Deng ◽  
Hua Ji Li ◽  
Wei Bin Li
Keyword(s):  
Magnesium Alloy ◽  
Oxide Film ◽  
Room Temperature ◽  
Surface Film ◽  
Surface Oxidation ◽  
Surface Oxide ◽  
Regeneration Ability ◽  
Surface Oxide Film ◽  
Oxidation Performance

The ZM5-0.1%RE magnesium alloy was heated to 800°C, when the surface oxide film was formed, the ZM5-0.1% RE Magnesium alloy which had being oxidized obtained by removing the surface oxidation film on the ZM5-0.1%RE magnesium alloy at room temperature. TGA curve, oxidaxion kinetics curves at constant temperatuers of the alloy and XRD spectrum of the surface film were analyzed in order to investigate the sureface oxidation behavior.The results show that the alloy still has anti-oxidation performance, And the oxide inerease occurred mostly between 400°C and 700°C，a layer of tight oxide film with 4-5.5um and composed of RE2O3, MgO, Al2O3and Mg17Al12was formed on the surface of magnesiurn alloy. The tight surface oxide film prevented the further oxidation of the base magnesiurn alloy, It show that the regeneration ability of oxidation film on ZM5-0.1%RE Magnesium Alloy was good.

Development and Research of Copper Covering for Intensification of Cold Stamping of Products from Stainless Steels

2021 ◽  
Vol 316 ◽  
pp. 809-813
Author(s):  
Vladimir V. Karzhavin ◽  
Lev V. Maltsev ◽  
Viktoriya V. Bakina
Keyword(s):  
High Temperature ◽  
Acid Solution ◽  
Sulphuric Acid ◽  
Stainless Steels ◽  
Diffusion Zone ◽  
Pure Copper ◽  
Sulphuric Acid Solution ◽  
Fused Salts ◽  
Substitution Type ◽  
Cold Stamping

The copper covering put in fused salts of chlorides at temperature of 450-500cC and preventing scuffs on the surface of steel of type 12X18H10T at cold stamping of case products and fixture was investigated. Metallurgical surveys have shown: 1) except cover zone and zone of base metal there is also transition zone, representing substitution type of solution; 2) in the course of application there is superficial alloying, due to penetration of atoms of copper deep into metal and diffusions of doping steel elements in coating material under the influence of melts's high temperature. The schedule of change of concentration of copper in diffusion zone allows to conclude that the copper covering consists not of pure copper, and that the alloy contains only 94% of copper; other 6% represent the chrome and the titanium diffusing in copper covering. It is established also that, despite strong cohesion with basis, the covering is completely removed from surface of the stamping details being dissolved in standard sulphuric acid solution.

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