scholarly journals Low Outgas Surface Treatment of Stainless Steel 316L Using Segregated Chromium Oxide Layer

2018 ◽  
Vol 61 (10) ◽  
pp. 675-680 ◽  
Author(s):  
A.N. ITAKURA ◽  
M. TOSA ◽  
T. YAKABE ◽  
N. MIYAUCHI ◽  
A. KASAHARA ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Treatment ◽  
Oxide Layer ◽  
Chromium Oxide ◽  
Stainless Steel 316L ◽  
Chromium Oxide Layer

Visualization and characterization of localized outgassing position on surface-treated specimens: Chromium oxide layer on stainless steel

2019 ◽  
Vol 492 ◽  
pp. 280-284
Author(s):  
Naoya Miyauchi ◽  
Tomoya Iwasawa ◽  
Taro Yakabe ◽  
Masahiro Tosa ◽  
Toyohiko Shindo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Chromium Oxide ◽  
Chromium Oxide Layer

Influence of Chromium Oxide Layer on Surface Tritium Contamination of Type 316 Stainless Steel

2011 ◽  
Vol 60 (4) ◽  
pp. 1499-1502 ◽  
Author(s):  
Yohei Ozeki ◽  
Yuji Hatano ◽  
Haruka Taniguchi ◽  
Masao Matsuyama
Keyword(s):  
Stainless Steel ◽  
Oxide Layer ◽  
Chromium Oxide ◽  
316 Stainless Steel ◽  
Chromium Oxide Layer

scholarly journals Penentuan Breakdown Voltage Karburasi Plasma dan Pemanfaatannya untuk Meningkatkan Kekerasan Stainless Steel 316L

PRISMA FISIKA ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 116
Author(s):  
Vanny Alpanesa Butar-Butar ◽  
Tjipto Sujitno ◽  
Boni Pahlanop Lapanporo
Keyword(s):  
Stainless Steel ◽  
Surface Treatment ◽  
Breakdown Voltage ◽  
Stainless Steel 316L

Penelitian bertujuan menentukan breakdown voltage karburasi plasma dan pemanfaatannya untuk meningkatkan kekerasan stainless steel 316L. Proses penentuan breakdown voltage karburasi plasma dilakukan dengan menggunakan gas CH4 dengan variasi tekanan 1; 1,2; 1,4; 1,6; 1,8; 2 mbar. Selain itu juga dilakukan proses surface treatment menggunakan gas CH4 dengan teknik karburasi plasma pada stainless steel 316L untuk meningkatkan kekerasan dengan variasi tekanan 1,2; 1,4; 1,6; 1,8 mbar. Breakdown voltage yang diperoleh dari perlakuan variasi tekanan berturut-turut sebesar 512; 540 ; 572,3; 602; 654,3; dan 655,7 volt, sedangkan nilai arus yang diperoleh berturut-turut 256; 457; 547; 708,3; 947,7; 986,7 mA. Hasil uji kekerasan menunjukkan nilai kekerasan optimum terjadi pada variasi tekanan 1,6 mbar dengan nilai kekerasan meningkat dari 109,4 VHN menjadi 228,6 VHN, atau meningkat sebanyak 108,88%.

A study of the electrophoretic deposition of polycaprolactone-chitosan-bioglass nanocomposite coating on stainless steel (316L) substrates

2021 ◽  
pp. 088391152110635
Author(s):  
Zahra Sadeghinia ◽  
Rahmatollah Emadi ◽  
Fatemeh Shamoradi
Keyword(s):  
Stainless Steel ◽  
Surface Treatment ◽  
Electrophoretic Deposition ◽  
Deposition Time ◽  
Sol Gel ◽  
Nanocomposite Coating ◽  
Deposition Method ◽  
Stainless Steel 316L ◽  
Gel Method

In this research, bioglass nanoparticles were synthesized via sol-gel method and a polycaprolactone-chitosan-bioglass nanocomposite coating was formed on SS316L substrate using electrophoretic deposition method. Then, the effects of voltage and deposition time on morphology, thickness, roughness, and wettability of final coating were investigated. Finally, biocompatibility and toxicity of the coating were evaluated. The results showed that increase of both time and voltage enhanced the thickness, roughness, and wettability of coating. Also, increase of deposition time increased the agglomeration. Therefore, it can be concluded that voltage of 20 V and time of 10 min are suitable for the formation of a uniform agglomerate-free coating. The presence of bioglass nanoparticles also led to the increase of roughness and improvement of polycaprolactone hydrophobicity. The results also showed higher bioactivity in polycaprolactone-chitosan-1% bioglass nanocomposite coating sample. This sample had a roughness ( Ra) of 1.048 ± 0.037 μm and thickness of 2.54 ± 0.14 μm. In summary, the results indicated that coating of polycaprolactone-chitosan-bioglass nanocomposite on SS316L substrate could be a suitable surface treatment to increase its in vivo bioactivity and biocompatibility.

scholarly journals Unravelling the Fe Effect on the Corrosion of Chromium Coatings: Chemical Composition and Semiconducting Properties

2021 ◽  
Author(s):  
Jonathan Leon ◽  
Sven Pletincx ◽  
Herman Terryn ◽  
Berkem Özkaya ◽  
Eva García-Lecina ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Chromium Oxide ◽  
Photoelectron Spectroscopy ◽  
Charge Carrier Density ◽  
Corrosion Performance ◽  
Polarisation Resistance ◽  
Semiconducting Properties ◽  
Chromium Oxide Layer ◽  
Order Of Magnitude ◽  
The Impact

Abstract A model trivalent chromium-based electroplating bath doped with different concentration of Fe was used to obtain the different metallic coatings. The impact of the Fe was investigated on the Cr layer and on its native passive film by a detailed characterisation using X-ray Photoelectron Spectroscopy (XPS), Angle Resolved XPS and Auger Electron Spectroscopy. Moreover, the semiconducting properties of their oxide layers were explored by Mott-Schottky and the corrosion performance by the linear polarisation resistance and kinetics of the oxide formation. Results revealed not only a homogeneous Fe distribution into the Cr layer but also the presence of an iron-chromium duplex oxide layer for concentrations ≥ 100 mg/L Fe in the bath. The Mott-Schottky analysis showed a p-n junction for such coatings due to the presence of an iron oxide layer on the top of a chromium oxide one which increases the total amount of point defects (charge carrier density) and drastically affects their corrosion resistance (the polarisation resistance decreased by one order of magnitude and their oxide layer showed slower kinetics and a higher passivation current). In contrast, coatings with a single chromium oxide layer showed a p-type semiconducting behaviour as well as the best corrosion performance.

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