A review on the fatigue performance of micro-arc oxidation coated Al alloys with micro-defects and residual stress

Dai, Weibing; Zhang, Ce; Yue, Haitao; Li, Qiang; Guo, Chenguang; Zhang, Jianzhuo; Zhao, Guochao; Yang, Xinle

doi:10.1016/j.jmrt.2023.06.244

Cited by 20 publications

(5 citation statements)

References 131 publications

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“…It can be seen from the Fig. 4 that the newly formed phase is mainly Ce(PO) 4 [9][10][11][12]. Followed by the addition of 7.5 g/L (CH 3 CO 3 ) 3 Ce•xH 2 O, it can be seen in the EDS diagram that there is a clear presence of Ce elements.…”

Section: Resultsmentioning

confidence: 88%

“…However, because of low hardness and poor wear resistance [2,3], the application is limited. Micro-arc oxidation (MAO) [4,5], also known as plasma electrolytic oxidation (PEO), is a prospective method for surface modi cation of Al, Mg, Ti, Nb and Ta alloys [6]. The MAO layers are mainly affected by electrolyte and electrical parameters for preparation [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Micro-arc oxidation (MAO) [4,5], also known as plasma electrolytic oxidation (PEO), is a prospective method for surface modi cation of Al, Mg, Ti, Nb and Ta alloys [6]. The MAO layers are mainly affected by electrolyte and electrical parameters for preparation [4,5]. Pinghu Che et al [7] studied and showed that adding a certain amount of acetate cerium particles can form a cerium phosphate lubricating phase during MAO process.…”

Section: Introductionmentioning

confidence: 99%

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Excellent tribological properties of Al2O3/MoS2/Ce(PO4) composite layers in- situ prepared on 6082-T6 alloy

Li,

Shang

2024

Preprint

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Al2O3/MoS2/Ce(PO4) composite ceramic coating was in-situ prepared on aluminum alloy by micro-arc oxidation. The results show that the content of (CH3CO3)3Ce·xH2O has a great influence on the microstructure of the ceramic layer. When the addition amount is 7.5 g/L, the surface hardness of the ceramic layer is 961.97 HV, which is 1.8 times that of the unadded and 8.36 times that of the matrix. Tribological tests show that the moderate addition of (CH3CO3)3Ce·xH2O also significantly improves the wear resistance of the ceramic layer. Composite layer research can be developed and applied to other alloys to improve their friction properties.

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Excellent tribological properties of Al2O3/MoS2/Ce(PO4) composite layers in- situ prepared on 6082-T6 alloy

Li,

Shang

2024

Preprint

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“…Various surface modification and coating techniques have been applied to suppress the degradation of Mg alloys or even to endow them with improved cytocompatibility [1][2][3][4][5][6][7][8], osteogenesis ability [1][2][3][4][5][6], antibacterial ability [1][2][3][4][5][6], and antitumor ability [7,8]. Among these, micro-arc oxidation (MAO) has received considerable attention, since MAO coatings are generated via in situ oxidation and sintering on magnesium alloys [1,3,4,9], aluminum alloys [10][11][12][13], titanium alloys [14][15][16][17][18], and tantalum alloys [19], and therefore exhibit high hardness, good wear resistance, and corrosion resistance. Most importantly, the composition, structure, papers from 80 to 3000 grits, cleaned with tap and distilled water, and finally dried in an air stream.…”

Section: Introductionmentioning

confidence: 99%

Mutual Impact of Four Organic Calcium Salts on the Formation and Properties of Micro-Arc Oxidation Coatings on AZ31B Magnesium Alloys

Chen,

Shi,

Zhang

et al. 2024

Coatings

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Calcium phosphate (Ca–P) coatings provide an effective approach in current research and the clinical application of Mg alloys by endowing them with improved corrosion resistance, biocompatibility, and even bioactivity. Ca-containing coatings were prepared on AZ31B magnesium alloys using the micro-arc oxidation (MAO) technique and a combination of ethylenediaminetetraacetic acid calcium disodium (EDTA–Ca), calcium glycerophosphate (GP–Ca), calcium gluconate (CaGlu2), and calcium lactate (CaLac2) as the Ca source in a near-neutral solution. The respective and mutual impacts of the four calcium salts on the formation and properties of the coatings were investigated. Experimental results indicated that GP–Ca was more decisive than EDTA–Ca, CaGlu2, and CaLac2 in the formation, morphology, and, therefore, the corrosion resistance of the coatings. GP–Ca alone could not effectively incorporate Ca2+ ions into the coatings but it could combine with EDTA–Ca, CaGlu2, and CaLac2 to bring a synergistic effect in improving the Ca content of the coatings. The bifunctional structure of CaGlu2 and CaLac2, containing hydroxyl groups and carboxylic groups with anchoring effects, enabled them to enhance the Ca content of the coatings. However, due to minor differences in functional group orientation, CaGlu2 was a little more efficient than CaLac2 in increasing Ca content, while CaLac2 was a little more efficient than CaGlu2 in improving the corrosion resistance of the coatings. Finally, the total concentration of the four calcium salts, [Ca2+]T, should be controlled at a proper level; otherwise, excessively high [Ca2+]T would produce localized microbumps originating from coating ablation, eventually deteriorating the corrosion resistance of the coatings.

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“…Micro-arc oxidation (MAO) is a widely used surface treatment technique to modify magnesium alloys [ 3 , 4 , 5 , 6 ], aluminum alloys [ 7 , 8 , 9 , 10 , 11 , 12 ], titanium alloys [ 13 , 14 , 15 , 16 ], and tantalum alloys [ 17 ] by modulating electrolyte compositions and concentrations [ 18 , 19 , 20 ]. MAO technology can improve the corrosion resistance of magnesium alloys and introduce macro or trace elements such as phosphorus (P) and zinc (Zn) into MAO coating to produce functionalized coating.…”

Section: Introductionmentioning

confidence: 99%

Investigation of In Vitro Cytocompatibility of Zinc-Containing Coatings Developed on Medical Magnesium Alloys

Wang,

Liu,

Zhu

et al. 2023

Materials

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In a neutral solution, we investigated the effects of Na2[ZnEDTA] concentrations at 0, 6, 12, 18, and 24 g/L on surface morphology, chemical composition, degradation resistance, and in vitro cytocompatibility of micro-arc oxidation (MAO) coatings developed on WE43 (Mg-Y-Nd-Zr) magnesium alloys. The results show that the enhanced Na2[ZnEDTA] concentration increased the Zn amount but slightly decreased the degradation resistance of MAO-treated coatings. Among the zinc-containing MAO samples, the fabricated sample in the base solution added 6 g/L Na2[ZnEDTA] exhibits the smallest corrosion current density (6.84 × 10−7 A·cm−2), while the sample developed in the solution added 24 g/L Na2[ZnEDTA] and contains the highest Zn content (3.64 wt.%) but exhibits the largest corrosion current density (1.39 × 10−6 A·cm−2). Compared to untreated WE43 magnesium alloys, zinc-containing MAO samples promote initial cell adhesion and spreading and reveal enhanced cell viability. Coating degradation resistance plays a more important role in osseogenic ability than Zn content. Among the untreated WE43 magnesium alloys and the treated MAO samples, the sample developed in the base solution with 6 g/L Na2[ZnEDTA] reveals the highest ALP expression at 14 d. Our results indicate that the MAO samples formed in the solution with Na2[ZnEDTA] promoted degradation resistance and osseogenesis differentiation of the WE43 magnesium alloys, suggesting potential clinic applications.

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A review on the fatigue performance of micro-arc oxidation coated Al alloys with micro-defects and residual stress

Cited by 20 publications

References 131 publications

Excellent tribological properties of Al2O3/MoS2/Ce(PO4) composite layers in- situ prepared on 6082-T6 alloy

Excellent tribological properties of Al2O3/MoS2/Ce(PO4) composite layers in- situ prepared on 6082-T6 alloy

Mutual Impact of Four Organic Calcium Salts on the Formation and Properties of Micro-Arc Oxidation Coatings on AZ31B Magnesium Alloys

Investigation of In Vitro Cytocompatibility of Zinc-Containing Coatings Developed on Medical Magnesium Alloys

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