Structure and antiwear behavior of micro-arc oxidized coatings on aluminum alloy

Tian, Jun; Luo, Z.P.; Qi, Shangkui; Sun, Xiaojun

doi:10.1016/s0257-8972(01)01671-1

Cited by 173 publications

(76 citation statements)

References 11 publications

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“…In the case of relatively thin coating obtained by 1 min anodizing, the E O 1s core-level peak is located at 531.4 eV (Fig. 7a) that is in agreement with the value determined for the polycrystalline Al 2 O 3 [25][26][27][28].…”

Section: Resultssupporting

confidence: 87%

Plasma electrolytic ceramic-like aluminum oxide coatings on iron

et al. 2009

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The process characteristics of plasma-assisted electrochemical treatment of iron in aluminate electrolyte consisted of aqueous 0.1 M NaAlO 2 ? 0.05 M NaOH have been studied. It has been shown that in the range of DC voltages from 260 to 340 V, it is possible to deposit dense ceramic-like coatings with the thickness increased from 0.3-0.5 lm after 1 min deposition time to 25-30 lm for 1 h of deposition. The coatings were examined by X-ray diffractometry, Fourier-transformed infrared, X-ray photoelectron spectroscopy, scanning electron microscopy, and an electrochemical potentiodynamic voltammetry. It is shown that in pre-spark conditions (100-200 V) and on the initial stages of micro-arc anodizing the forming films contain, along with amorphous aluminum oxide/hydroxide, a substantial amount of iron oxide/hydroxide. The coatings obtained by micro-arc anodizing at 260-360 V for 10-60 min represent amorphous aluminum oxide with inclusions of crystalline corundum phase. The films with a thickness of 4-15 lm deposited at the anodizing voltage of 320-360 V exhibited the uniformity and good corrosion protection properties after sealing with common agents.

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Section: Resultssupporting

confidence: 87%

Plasma electrolytic ceramic-like aluminum oxide coatings on iron

et al. 2009

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“…Jun Tian et al [40] investigated the structure and antiwear behavior of PEO coatings on 2A12 Al alloy. The samples were fabricated by PEO treatment in the electrolyte composed of Na 2 SiO 3 (30g/L), NaOH (5g/L), with current density controlled to below 10 The aforementioned studies revealed that the PEO ceramic coatings can sharply increase the wear resistance and decrease the wear rate, compared to the uncoated substrates.…”

Section: Friction and Wear Behavior Of Peo Coatings Under Heavy Loadsmentioning

confidence: 99%

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Li¹,

Liang²,

Wang³

2013

Modern Surface Engineering Treatments

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“…However, these alloys exhibit poor tribological behavior and anti-oxidation resistance at high temperatures. Microarc oxidation (MAO) is a new surface modification technique widely investigated in recent years and employed to produce different kinds of coatings on Ti alloys with improved properties [1][2][3][4][5][6][7][8]. Basically, the composition of the MAO coating depends on the substrate (Mg, Al, or Ti alloy) and the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Modified Micro-arc Oxidation Coating Using Al2O3 Particles on Ti6Al4V

Li¹,

Zhang²

2017

J Material Sci Eng

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A micro-arc oxidation coating on Ti6Al4V alloy was modified by addition of micro-Al 2 O 3 particles to a sodium phosphate solution. The coating structure and phase were characterized by scanning electron microscopy and X-ray diffraction, and the oxidation resistance and thermal shock properties of the coating were investigated. Results showed that a coating denser than the original coating was produced. This new coating was composed of Al 2 TiO 5 and TiO 2 . The oxidation resistance and thermal shock property of the coating improved with addition of Al 2 O 3 particles to the electrolyte relative to the sample prepared without the particles in the electrolyte. Moving Al 2 O 3 particles were adsorbed on the coating surface and penetrated through it. As a result, the phase structure and properties of the original coating were modified.

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Structure and antiwear behavior of micro-arc oxidized coatings on aluminum alloy

Cited by 173 publications

References 11 publications

Plasma electrolytic ceramic-like aluminum oxide coatings on iron

Plasma electrolytic ceramic-like aluminum oxide coatings on iron

Plasma Electrolytic Oxidation Coatings on Lightweight Metals

Preparation of a Modified Micro-arc Oxidation Coating Using Al2O3 Particles on Ti6Al4V

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