Effect of various ratios of nitric acid – chloride on electronic properties of passive films on AISI 304L stainless steel

2018 ◽  
Vol 109 (6) ◽  
pp. 522-531
Author(s):  
Nilay N. Khobragade ◽  
Ankur V. Bansod ◽  
Awanikumar P. Patil ◽  
Manish Bihade
Keyword(s):  
Stainless Steel ◽  
Nitric Acid ◽  
Electronic Properties ◽  
Acid Chloride ◽  
Passive Films ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Aisi 304L Stainless Steel

Mechanism of corrosion of AISI 304L stainless steel in the presence of nitric acid condensates

2000 ◽  
Vol 42 (10) ◽  
pp. 1685-1707 ◽  
Author(s):  
Fanny Balbaud ◽  
Gérard Sanchez ◽  
Pierre Fauvet ◽  
Gérard Santarini ◽  
Gérard Picard
Keyword(s):  
Stainless Steel ◽  
Nitric Acid ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Aisi 304L Stainless Steel

Development of Laser Cleaning for Metallic Equipment

2018 ◽  
Author(s):  
L. Carvalho ◽  
W. Pacquentin ◽  
M. Tabarant ◽  
J. Lambert ◽  
A. Semerok ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Scanning ◽  
Surface Defects ◽  
Complex Geometry ◽  
Laser Cleaning ◽  
304L Stainless Steel ◽  
Primary Coolant ◽  
Aisi 304L ◽  
Weight Percentage ◽  
Aisi 304L Stainless Steel

Laser cleaning study was performed on prepared samples using a nanosecond pulsed ytterbium fiber laser. To prepare samples, AISI 304L stainless steel samples were oxidized and implemented with non-radioactive contaminants in a controlled manner. In order to validate the cleaning process for metallic equipment polluted in nuclear installations, two types of contamination with europium (Eu) and with cobalt (Co) were studied. Eu was used as a simulator-product resulting from uranium fission, while Co — as an activation-product of nickel, which is a composing element of a primary coolant system of a reactor. The oxide layers have suffered laser scanning which was followed by the furnace treatment to obtain thicknesses in the range of 100 nm to 1 μm depending on the oxidation parameters [1] with a mean weight percentage of 1% of Eu and 1 % of Co in the volume of the oxide layer. Glow Discharge Optical Emission (GD-OES) and Mass Spectrometry (GD-MS) analyses have been performed to assess the efficiency of the cleaning treatment and to follow the distribution of residual contamination with a detection limit of 0.1mg/kg of Eu and Co. Decontamination rates up to 95.5 % were obtained. One of the identified reasons for this limitation is that the radionuclides are trapped in surface defects like micro cracks [2, 3]. Therefore, cleaning treatments have been applied on surface defects with controlled geometry and a micrometric aperture obtained by laser engraving and juxtaposition of polished sheets of AISI 304L stainless steel. The goal of this study is surface decontamination without either welding or inducing penetration of contamination into the cracks. GD-MS analysis and Scanning Electron Microscopy (SEM) were performed to analyze the efficiency of the treatment and the diffusion of contaminants in this complex geometry.

Effect of texture on corrosion behavior of AISI 304L stainless steel

2005 ◽  
Vol 54 (2) ◽  
pp. 141-147 ◽  
Author(s):  
B. Ravi Kumar ◽  
Raghuvir Singh ◽  
Bhupeshwar Mahato ◽  
P.K. De ◽  
N.R. Bandyopadhyay ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Corrosion Behavior ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Aisi 304L Stainless Steel
Sign in / Sign up

Export Citation Format

Share Document