Composition and adhesion of protective coatings on aluminum

Gnedenkov, Sergey V.; Khrisanfova, O. A.; Zavidnaya, A. G.; Sinebrukhov, S. L.; Гордиенко, П. С.; Iwatsubo, S.; Matsui, Akihiko

doi:10.1016/s0257-8972(01)01307-x

Cited by 107 publications

(43 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4. The result shows that some new peaks corresponding to the hydroxyapatite (HA) Journal of the Ceramic Society of Japan 120 [11] 548-550 2012 appear in the TF-XRD pattern of the hydrothermal treated MAO coating. That means the needle-like nano-crystals formed on the surface of MAO coating is HA.…”

Section: Resultsmentioning

confidence: 99%

Formation of HA/Al2O3 composite coating on NiTi alloy by micro-arc oxidation and hydrothermal treatment

Liu

Wang

Chen

et al. 2012

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

The ceramic coating was prepared in an electrolyte containing EDTA-Ca, NaAlO 2 and Na 3 PO 4 by Micro-arc oxidation. The surface of ceramic coating displays a rough, porous structure. The ceramic coating is composed of Al, Ti, Ni, O, Ca and P. Thinfilm X-ray diffraction shows that the ceramic coating is composed of Al 2 O 3 phase. After hydrothermal treatment, the porous composite coating consisting of Al 2 O 3 and hydroxyapatite was prepared on MAO-treated NiTi alloy.

show abstract

Section: Resultsmentioning

confidence: 99%

Formation of HA/Al2O3 composite coating on NiTi alloy by micro-arc oxidation and hydrothermal treatment

Liu

Wang

Chen

et al. 2012

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

show abstract

“…This technological approach is usually applied in so-called valve metals as aluminum, magnesium, or titanium to obtain surface advanced properties such as high electrical insulation, corrosion and wear resistance, and excellent performance [6][7][8]. The combination of the obtained properties leads to their wide applications in medical, oil and gas, automotive, and aerospace industries.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Oxide Coating Synthesized on an Aluminum Alloy by Plasma Electrolytic Oxidation in Molten Salt

et al. 2017

View full text Add to dashboard Cite

Plasma electrolytic oxidation (PEO) is a surface treatment process for obtaining oxide coatings with a high performance on valve metals. PEO is mostly performed in an aqueous solution electrolyte that limits the size of treated parts due to the fact that the system is heated. Therefore, the coating of large surfaces cannot be synthesized in an aqueous electrolyte. In the current work, an alternative approach of PEO treatment, whereby an aluminum 1050 alloy in nitrate molten salt at a temperature of 280 • C is applied, was investigated. The microstructure, phase and chemical compositions, and micro-hardness were examined using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and micro-hardness tests. The obtained results show that formed coating contains from two sub-layers: one is the outer sub-layer of the α-Al 2 O 3 phase and the second is its inner sub-layer. It was found that the formed coating was free of any contaminants originating from the electrolyte and had no cracks or pores, which are usually present in coatings formed by PEO treatment in an aqueous solution electrolyte.

show abstract

“…Moreover, in the MAO coating method, the composition of the oxide layer can be modified by adding different chemicals into the electrolyte solution [11]. This coating modifications can be used in the isolated areas owing to the dielectric properties and in the architectural areas through the ability of being produced with different colors [12]. Being an environmentally friendly coating method, the MAO method makes it possible to coat the surface of the materials such as Mg, Ti and Al having different mechanical and physical structural properties [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Wear Parameters of MAO Coated Aluminum Based on Taguchi Method

2017

IJAMAE

View full text Add to dashboard Cite

Abstract-Micro arc oxidation (MAO) coating method is the process of coating with hard, abrasion and corrosion resistant surface by immersing the substrate in an electrolytic liquid by the effect of electrochemical reaction through the plasma discharge.In the first step, the samples are coated aluminum oxide in the solution of potassium hydroxide, sodium aluminate and sodium phosphate. In the second step, coating is performed by adding 0,8 gr/lt Ti particles in the same solution. For both solutions, the frequency, voltage and processing time varied as 100-350 Hz, 450-550V, 10-30 min, respectively. After the coating process, measurements are carried out for analyzing the impact of experimental parameters (voltage, frequency and processing time) and Ti addition. Afterwards wear tests are applied on coated samples on block-on-disc abrasion test unit. The weights of the samples were recorded after 500, 1000 and 1500 m wear distance with 10 -5 g sensitive scales.After these experiments and tests, Taguchi method, a way to optimize the parameters which cannot be controlled during experiment. Various methods are used to determine the factor levels in this technique. The algorithm which will be used to solve multiresponse problem by using orthogonal arrays were explained. Consequently in this study, coatings and wear tests described above were carried out and variance analysis were performed by using ANOVA. The relevance of the results has been checked.

show abstract

Composition and adhesion of protective coatings on aluminum

Cited by 107 publications

References 3 publications

Formation of HA/Al<sub>2</sub>O<sub>3</sub> composite coating on NiTi alloy by micro-arc oxidation and hydrothermal treatment

Formation of HA/Al<sub>2</sub>O<sub>3</sub> composite coating on NiTi alloy by micro-arc oxidation and hydrothermal treatment

An Investigation of Oxide Coating Synthesized on an Aluminum Alloy by Plasma Electrolytic Oxidation in Molten Salt

Optimization of Wear Parameters of MAO Coated Aluminum Based on Taguchi Method

Contact Info

Product

Resources

About