Results 1 to 10 of about 22,595 (252)

An oxide coating impedance measurement during micro-arc oxidation

Journal of Physics: Conference Series, 2021
Abstract The impedance instrument converter of oxide layers formed by micro-arc oxidation (MAO) is developed. It allows continuous non-destructive testing of electric parameters of the synthesized coatings (resistance and capacitance) and electrolyte conductivity to assess the degree of degradation. The instrument converter consists of a
P E Golubkov, E A Pecherskaya, O V Karpanin, O A Melnikov, A V Pecherskiy, O A Timokhina   +5 more
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Research Progress of Tribological Properties of Titanium Alloy Micro - Arc Oxidation Coatings

, 2022
The titanium alloy has excellent specific strength and is a light metal alloy suitable for lightweight design. However, its low surface hardness and poor wear resistance seriously limit its practical application.
XIE Feng - kuan, ZHANG Hao, LIU Qian
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Study on Microstructure and Properties of Aa7075 Coated by Micro Arc Oxidation

Journal of Materials Research and Technology, 2023
Effect of ageing temperature on the properties of 7075 aluminum alloy coated by micro arc oxidation (MAO) technology has been investigated. The precipitates formed at various ageing temperatures are observed by transmission electron microscope (TEM), which would significantly influence the properties of the MAO coating.
Xing Qi, Bo Jiang, Ziqiu Jiang, Yafeng He, Renguo Song   +4 more
openaire   +2 more sources

Trattamenti elettrochimici di micro-arc oxidation : strategie per migliorare le proprietà superficiali delle leghe di magnesio [PDF]

, 2022
LAUREA MAGISTRALEIl magnesio e le sue leghe di stanno affermando come uno dei metalli a più alto interesse applicativo degli ultimi anni. Lo sviluppo, sia dal punto di vista economico che di ricerca, si riflette in impieghi sempre più ottimizzati in ...
Meazza, Francesco
core  

Large-Arc Discharge Mechanism and Avoidance in Micro-Arc Oxidation of Magnesium Alloy

, 2022
The large-arc discharge problem occurs in the processing of magnesium alloy by micro-arc oxidation. It will cause local ablation of ceramic coating and even magnesium alloy matrix material.
Ke-Xin Guan, Hui Dong, Li-Shuang Wang, Jian-Tao Yao   +3 more
core   +1 more source

Measurement of oxide coating thickness in the micro-arc oxidation process

Journal of Physics: Conference Series, 2020
Abstract The requirements to methods for measuring the oxide coatings thickness are formulated, allowing measurements to be carried out directly in the process of their formation in real time, which is a necessary condition for the controlled synthesis of coatings with desired properties.
P E Golubkov, E A Pecherskaya, T O Zinchenko, V A Baranov, G V Kozlov, Y V Shepeleva   +5 more
openaire   +1 more source

Initial stages of AZ91 Mg alloy micro-arc anodizing: Growth mechanisms and effect on the corrosion resistance

, 2014
10th International Symposium on Electrochemical Methods in Corrosion Research (EMCR), Maragogi, BRAZIL, NOV 18-23, 2012International audienceIn the framework of the new ecological regulations, micro-arc oxidation (MAO) appears as an alternative to usual ...
Martin, Julien, Henrion, Gérard, Rocca, Emmanuel, Veys-Renaux, Delphine, Martin, J.   +4 more
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Preparation of Compact Micro-Arc Oxidation Coatings on Aluminum Alloys

, 2010
In this paper, a hard and thin coating with no loose layer was formed on the surface of the aluminum LC4 by bipolar micro-arc oxidation power, and the influence of ratio J of the negative current density to the positive current density on the thickness h
T.J. Wang, Jun Zhao, J.J. Xi, Pei Nian Wu   +3 more
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Research Status on Friction and Wear Characteristics of Micro-Arc Oxidation Coatings Prepared by Different Methods

, 2023
Magnesium，aluminum，titanium and their alloys have been widely used in machinery，aerospace，biomedicine and other fields，owing to the advantages of high specific strength，rich resources and good processing performance.However，the disadvantage of poor wear ...
WANG Hao, LI Qing-da, LIU Ai-lian, HU Chun-ying, ZHAO Sheng-xue, HU Jun
core   +1 more source

Forming Ceramic Coating on Al2024 by Scanning Micro-Arc Oxidation

, 2010
Micro-arc oxidation (MAO) is a novel technique to deposit ceramic coatings on the surface of valve metals such as Al, Mg, Ti and their alloys. The oxide films prepared by this technique have a dense structure, high adhesion and excellent integrated ...
Peng Xiang Lv, Shi Chun Di, Guan Xin Chi, Jin Cheng Liu, Dong Bo Wei   +4 more
core   +1 more source