Process for Coating Tin-Free Steel with Layers of Metallic Chromium and Chromium Oxide

1969 ◽  
Vol 116 (3) ◽  
pp. 398 ◽  
Author(s):  
Nobuo Fukuda ◽  
Shigeru Yonezaki ◽  
Hajime Nitto ◽  
Minoru Kamada ◽  
Hidejiro Asano ◽  
...  
Keyword(s):  
Chromium Oxide ◽  
Metallic Chromium

The spalling of chromium oxide on an FeCr alloy

1966 ◽  
Vol 6 (11-12) ◽  
pp. 549-550 ◽  
Author(s):  
V HOWES
Keyword(s):  
Chromium Oxide ◽  
Fecr Alloy

Chemical deposition of hard composite coatings Ni–Cu–P–Cr2O3

2020 ◽  
pp. 179-181
Author(s):  
A.A. Abrashov A.A. ◽  
E.G. Vinokurov ◽  
M.A. Egupova ◽  
V.D. Skopintsev
Keyword(s):  
Chromium Oxide ◽  
Alkaline Solution ◽  
Composite Coatings ◽  
Chemical Deposition ◽  
Alkaline Solutions ◽  
Functional Surface ◽  
Heat Treated ◽  
Weakly Acid Solution ◽  
Coating Composition ◽  
Weakly Acidic Solution

The technological (deposition rate, coating composition) and functional (surface roughness, microhardness) characteristics of chemical composite coatings Ni—Cu—P—Cr2O3 obtained from weakly acidic and slightly alkaline solutions are compared. It is shown that coatings deposited from slightly alkaline solution contain slightly less phosphorus and chromium oxide than coatings deposited from weakly acid solution (2...3 % wt. phosphorus and up to 3.4 % wt. chromium oxide), formed at higher rate (24...25 microns per 1 hour of deposition at temperature of 80 °C), are characte rized by lower roughness and increased microhardness. The Vickers microhardness at 0.05 N load of composite coatings obtained from slightly alkaline solution and heat-treated at 400 °C for 1 hour is 13.5...15.2 GPa, which is higher than values for coatings deposited made of weakly acidic solution. The maximum microhardness of coatings is achieved at concentration 20 g/l of Cr2O3 particles. The technology of chemical deposition of Ni—Cu—P—Cr2O3 coatings formed in slightly alkaline solution is promising for obtaining of materials with increased hardness and wear resistance.

Technology for the production of nanostructured coatings from nanoparticles of tungsten carbide and metal chromium

2020 ◽  
pp. 117-124
Author(s):  
T. I. Bobkova ◽  
R. Yu. Bystrov ◽  
A. A. Grigoriev ◽  
E. A. Samodelkin ◽  
B. V. Farmakovsky
Keyword(s):  
Tungsten Carbide ◽  
Composite Powder ◽  
Nanostructured Coatings ◽  
Powder Materials ◽  
Metallic Chromium ◽  
Complex Processes ◽  
Functionally Gradient ◽  
High Microhardness ◽  
Gradient Coatings ◽  
Technological Methods

This paper presents results of a study of complex processes for producing composite powder materials from tungsten carbide and metallic chromium. Technological methods for the formation of functionally gradient coatings with high microhardness up to 426 HV through microplasma spraying technology are disclosed.

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

Chromium oxide dissolution in steels via short pulse laser processing

2013 ◽  
Vol 115 (4) ◽  
pp. 1469-1477 ◽  
Author(s):  
Evgeny Kharanzhevskiy ◽  
Sergey Reshetnikov
Keyword(s):  
Pulse Laser ◽  
Chromium Oxide ◽  
Laser Processing ◽  
Short Pulse ◽  
Oxide Dissolution ◽  
Short Pulse Laser

Surface modification of sintered magnesium oxide (MgO) with chromium oxide (Cr2O3) by pulsed laser irradiation in air and liquids

2021 ◽  
Author(s):  
Katia del Carmen Martínez Guzmán ◽  
Sadasivan Shaji ◽  
Tushar Kanti Das Roy ◽  
Bindu Krishnan ◽  
David Avellaneda Avellaneda ◽  
...  
Keyword(s):  
Surface Modification ◽  
Laser Irradiation ◽  
Magnesium Oxide ◽  
Chromium Oxide ◽  
Pulsed Laser ◽  
Pulsed Laser Irradiation
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