Effect of aluminum coatings on the fatigue of alloy ZhS6U

1977 ◽  
Vol 9 (11) ◽  
pp. 1316-1320
Author(s):  
M. S. Belyaev ◽  
N. D. Zhukov ◽  
M. P. Krivenko ◽  
V. V. Terekhova
Keyword(s):  
Aluminum Coatings ◽  
Alloy Zhs6u

Life prolongation of far ultraviolet reflecting aluminum coatings by periodic recoating of the oxidized surface

1997 ◽  
Vol 135 (1-3) ◽  
pp. 60-64 ◽  
Author(s):  
Juan Ignacio Larruquert ◽  
JoséAntonio Méndez ◽  
JoséAntonio Aznárez
Keyword(s):  
Aluminum Coatings ◽  
Far Ultraviolet ◽  
Life Prolongation

Aluminum coatings on the internal surface of the body of color TV tubes

1990 ◽  
Vol 25 (4) ◽  
pp. 432-435
Author(s):  
B. S. Malkiel' ◽  
A. R. Gachkevich ◽  
Yu. R. Sosnovyi ◽  
R. F. Terletskii ◽  
G. V. Pokhumurskaya
Keyword(s):  
Internal Surface ◽  
The Body ◽  
Aluminum Coatings

scholarly journals Protective and strengthening coatings on reinforcing steels

2020 ◽  
Vol 96 (4) ◽  
pp. 39-46
Author(s):  
S.A. Vodennikov ◽  
◽  
V.O. Skachkov ◽  
O.S. Vodennikova ◽  
◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Electrochemical Oxidation ◽  
Mechanical Characteristics ◽  
Aluminide Coating ◽  
Structural Phase ◽  
Phase Changes ◽  
Electrolytic Deposition ◽  
Reinforcing Steel ◽  
Aluminum Coatings

A conceptually new technology for the application of aluminum coatings on 18G2C steel by the electrolytically deposited NaF-NaCl - AlF3 ionic melt method has been developed. To solve the tasks set in the work, a set of experimental and computational research methods was used: metallographic analysis, energy dispersion microanalysis, mechanical tests, and calculation of the oxidation rate of samples. The mechanical characteristics of the samples of reinforcing steel were determined on a rupture machine FP-100 at an active capture rate of 2.5 mm / min. The relationship between the rates of electrochemical oxidation of the aluminide coating, its mechanical properties, with the distribution of aluminum in the depth of the samples and its phase composition have been determined. The increase of mechanical characteristics of samples from 18G2S steel with an aluminum covering in comparison with usual reinforcing steel is shown. The sequence of structural-phase changes of metal in the process of aluminide coating is determined and its influence on mechanical and corrosion resistance is determined. Experimental evaluation of the rate of oxidation of 18G2C steel samples with aluminum coating under the conditions of sulfuric acid electrolyte at an electric current of 11 to 18 A has been conducted. The developed technology of electrolytic deposition of aluminum has scientific and practical interest for the construction industry. The developed coating makes it possible to increase the mechanical properties of steel by almost 12% and to increase the corrosion resistance. Keywords: aluminum coatings, 18G2C steel, electrochemical oxidation, electrolytic deposition.

Reduced erosion in helium implanted aluminum coatings

1976 ◽  
Vol 61 (1) ◽  
pp. 113-116 ◽  
Author(s):  
K.L. Wilson ◽  
G.J. Thomas ◽  
W. Bauer
Keyword(s):  
Aluminum Coatings

Deposition of aluminum coatings on bio-composite laminates

2018 ◽  
Author(s):  
L. Boccarusso ◽  
A. Viscusi ◽  
M. Durante ◽  
A. Astarita ◽  
D. De Fazio ◽  
...  
Keyword(s):  
Composite Laminates ◽  
Aluminum Coatings

Ultralow-temperature fabrication of chromium-free zinc-aluminum coatings based on polysilazane

2021 ◽  
pp. 125608
Author(s):  
Chuntao Li ◽  
Junfeng Wei ◽  
Mincong Chen ◽  
Xiaoxiao Guan ◽  
Xi Yang ◽  
...  
Keyword(s):  
Aluminum Coatings ◽  
Ultralow Temperature ◽  
Free Zinc

Influence of Preliminary Heat Treatment and Ball Milling of Aluminum Powder on Cold Spray Process

2021 ◽  
Vol 313 ◽  
pp. 127-135
Author(s):  
S.V. Klinkov ◽  
V.F. Kosarev ◽  
A.E. Chesnokov ◽  
A.V. Smirnov ◽  
V.S. Shikalov
Keyword(s):  
Heat Treatment ◽  
Ball Milling ◽  
Aluminum Powder ◽  
Cold Spraying ◽  
Preliminary Heat Treatment ◽  
Aluminum Powders ◽  
Aluminum Coatings ◽  
Spray Process ◽  
Spraying Process ◽  
Milled Powders

This paper presents the results of a study of the effect of preliminary heat treatment and ball milling of aluminum powder on the cold spraying process and the properties of the obtained coatings (porosity and microhardness). The ball milling of aluminum powder leads to an increase in specific surface area, a decrease in apparent density and a decrease in the value of the crystallite size, which indicates a decrease in grain size. It is shown that coatings deposited from ball milled powders have slightly higher coatings hardness averagely. The profilometry of aluminum coatings obtained under the same conditions from the initial and processed powders did not reveal significant changes in the form of coatings and their typical dimensions (width, thickness), which indicates the absence of significant changes in the deposition coefficient of the initial and processed aluminum powders. Ball milled powders on average correspond to slightly higher hardnesses of coatings.

scholarly journals Hygroexpansion and Surface Roughness Cause Defects and Increase the Electrical Resistivity of Physical Vapor Deposited Aluminum Coatings on Paper

Coatings ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 33 ◽  
Author(s):  
Martina Lindner ◽  
Julia Heider ◽  
Matthias Reinelt ◽  
Horst-Christian Langowski
Keyword(s):  
Surface Roughness ◽  
Relative Humidity ◽  
Moisture Content ◽  
Inductively Coupled Plasma ◽  
Physical Vapor Deposition ◽  
Eddy Currents ◽  
Unit Area ◽  
Substrate Roughness ◽  
Aluminum Coatings ◽  
Inductively Coupled

Aluminum coatings, which are applied by physical vapor deposition (PVD), have to be virtually defect-free in barrier applications for the packaging industry. When aluminum is applied to paper, hygroexpansion and substrate roughness can impair the aluminum coating. Neither effect is easy to detect by microscopy, but both can manifest as an increase in electrical resistance. Here, we quantified the effect of substrate paper hygroexpansion and surface roughness on the effective resistivity ρEFF of aluminum coatings. The sheet resistance of aluminum coated onto four different rough paper surfaces was measured via eddy currents at different relative humidity (0%–95%). The mass of aluminum per unit area was determined by inductively-coupled plasma mass spectrometry (ICP–MS). We calculated ρEFF based on the measured resistance and aluminum mass per unit area, combined with a value for aluminum density from the literature. The substrate roughness was proportional to ρEFF. Relative humidity correlated with the moisture content of the paper substrate according to the Guggenheim, Anderson, and De Boer (GAB) equation, whereas the moisture content showed a linear correlation with hygroexpansion. At relative humidity of up to 50%, hygroexpansion was linearly correlated with the increase in ρEFF, which is related to the mechanical straining and deformation of aluminum. At higher humidity, aluminum started to crack first on rough substrates and later on smooth substrates. The increase in ρEFF was larger on rough substrates. The findings highlight the need for information about substrate roughness, humidity, and hygroexpansion when eddy current measurement results are compared, and will help to ensure that aluminum coatings, applied by PVD, are defect-free.

scholarly journals Flame Spraying of Aluminum Coatings Reinforced with Particles of Carbonaceous Materials as an Alternative for Laser Cladding Technologies

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3467 ◽  
Author(s):  
Artur Czupryński
Keyword(s):  
Laser Cladding ◽  
Carbon Materials ◽  
High Strength ◽  
Preliminary Test ◽  
Flame Spraying ◽  
Test Results ◽  
Carbonaceous Materials ◽  
Aluminum Coatings ◽  
Cylinder Liners ◽  
Near Future

The article presents results of the preliminary research of mechanical properties of flame-sprayed aluminum coatings reinforced with carbon materials made on the construction steel S235J0 substrate. For reinforcement the following carbon materials were used: carbon nanotubes Nanocyl NC 7000 (0.5 wt.% and 1 wt.%) and carburite (0.5 wt.%). The properties evaluation was made using metallographic macroscope and microscope, chemical composition, microhardness, abrasion and erosion resistance studies. The obtained results were compared with aluminum powder coatings (EN AW 1000 series). It was proved that the flame spraying of aluminum coatings reinforced with particles of carbonaceous materials can be an effective alternative for laser cladding technology. The preliminary test results will be successively extended by further experiments to contribute in the near future to develop innovative technologies, that can be implemented in the automotive industry for production of components with high strength, wear resistance, good thermal conductivity and low density, such as brake shoes, cylinder liners, piston rings and gears.

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