The heat protection of highly forced diesel pistons by anodic microarc oxide coating

Чигринова, Н. М.; Чигринов, В. Е.; Kukharev, A. A.

doi:10.1007/bf02758404

Cited by 7 publications

(3 citation statements)

References 1 publication

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“…In this case, higher current density is required to achieve a region of microarc discharges, as compared to oxida tion of low silicon ones. A decrease in the coating growth efficiency may also be related to the etching processes resulting in an increase in the actual pro cessed surface area [13]. The suggested technique (W99/31303) of suppressing the screening effect due to silicon inclusions that consists in setting a high ini tial current density to achieve the microarc mode with further decrease (five to sixfold) to the calculated value proves to consume much power and be econom ically unprofitable.…”

Section: Introductionmentioning

confidence: 98%

Formation of microplasma coatings on high-silicon aluminum alloy and their characteristics

Slonova

Terleeva

Belevantsev

et al. 2012

Prot Met Phys Chem Surf

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This work presents the results of studying the electrochemical microplasma formation of coatings based on the AK21 alloy of hypereutectic composition in silicate-alkali electrolyte. It is found that the boundary size of primary silicon inclusion in the alloy and additional cathodic surface treatment affect sig nificantly the shape of voltage chronograms and growth dynamics of the coating thickness. It is shown that thick (more than 180 μm) layered coatings with a mosaic inner layer structure formed by fragments on the basis of the aluminum forms (amorphous Al(OH) 3 , α , δ , γ Al 2 O 3 ) in the matrix of amorphous SiO 2 are formed on this alloy at all the applied treatment modes and silicon crystal sizes. It is found that the coating inner layer structure is regularly related to the limiting dimensions of primary silicon crystals. In addition, introduction of an additional cathodic component in the high voltage polarization modes of the electrolytecoating-alloy system yielded a pronounced positive effect in the pattern of inner layer microhardness distri bution that also characteristically depends on the limiting dimensions of primary silicon crystals in the initial samples.

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Section: Introductionmentioning

confidence: 98%

Formation of microplasma coatings on high-silicon aluminum alloy and their characteristics

Slonova

Terleeva

Belevantsev

et al. 2012

Prot Met Phys Chem Surf

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“…However, all types of such coatings present cracking problems and layer separation due to high-frequency thermal loads. At the moment, the development of TBC for combustion engine pistons using the micro-arc oxidation (MAO) process arouses considerable interest worldwide [4][5].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of t he Micro - Arc Oxide Coating Effect on Thermal Properties of an Aluminium Alloy Piston Head

Dudareva¹,

Dombrovskiy²,

Kalschikov³

et al. 2015

JESTR

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The purpose of the present study is to investigate the influence of differently sized microarc oxidation coatings, applied to the bottom of pistons made with an Al-12Si-Mg-Cu-Ni alloy, on its thermal properties by simulating the operation of a real engine. This study is based on the premise that the alumina coating thickness affects the heat transfer and temperature distribution in the piston. The analysis of thermal properties of pistons and suggestions for the optimal thermal barrier coating thickness are presented.

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“…Porous titanium dioxide can be compounded by many kinds of methods, among which are sol-gel method, chemical vapor deposition method, physical vapor deposition method, hydrothermal reaction method, electrochemical anodic oxidation method, liquid phase deposition method, sputtering method, and the micro-arc oxidation [1][2][3] . Microarc oxidation is a relative new method which prepared ceramic film on the surface of titanium, aluminum, magnesium and zirconium [4][5][6] . In this study, the micro-arc oxidation was used to prepare titanium dioxide film on the titanium matrix and characterized and made photocatalyst experiments on the titanium dioxide film.…”

Section: Introductionmentioning

confidence: 99%

Research on Compounding Porous Titanium Dioxide Film by MAO and Photocatalyst

Sun

2012

AMR

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The heat protection of highly forced diesel pistons by anodic microarc oxide coating

Cited by 7 publications

References 1 publication

Formation of microplasma coatings on high-silicon aluminum alloy and their characteristics

Formation of microplasma coatings on high-silicon aluminum alloy and their characteristics

Experimental Study of t he Micro - Arc Oxide Coating Effect on Thermal Properties of an Aluminium Alloy Piston Head

Research on Compounding Porous Titanium Dioxide Film by MAO and Photocatalyst

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