Articolul precedent |
Articolul urmator |
536 0 |
SM ISO690:2012 APELFELD, A., KRIT, Boris, SOUMINOV, I., MOROZOVA, N.. EMT 1 P Innovative prospects of nanostructural surface modifying by electrolyte plasma. In: Materials Science and Condensed Matter Physics, Ed. 6, 11-14 septembrie 2012, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2012, Editia 6, p. 270. ISBN 978-9975-66-290-1. |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Materials Science and Condensed Matter Physics Editia 6, 2012 |
||||||
Conferința "Materials Science and Condensed Matter Physics" 6, Chișinău, Moldova, 11-14 septembrie 2012 | ||||||
|
||||||
Pag. 270-270 | ||||||
|
||||||
Descarcă PDF | ||||||
Rezumat | ||||||
This report deals with one of methods of Surface Treatment at Electrolytic Plasma – Micro Discharge Oxidizing (MDO). MDO – is a perspective process of surface treatment which received recently more and more broad distribution for obtaining multifunctional coatings and finding application in the most various industries. Subjects for processing are so-called valve metals and their alloys (aluminum, magnesium, titanium, tantalum, niobium, zirconium etc.), i.e. metals, whose oxide films, formed by an electrochemical way, have one-direction conductivity in metal-oxideelectrolyte system. The surface treatment in electrolytic plasma takes the beginning from conventional anodizing, however it has a number of essential differences, namely: the process is being conducted at voltage on the order above than at anodizing (up to 1000 V); alternating and pulse rather than direct current are mainly used; weak-alkaline electrolytes in main are apply. Electric discharges are concentrated into nano- and micro-dimensioned porous (Fig. 1) what allow to obtain high-temperature metastable phases (in discharge channels T≈2000-5000 К and P≈106 Pa [1]). In a combination with high speed of cooling there is possible to receive ceramic-like coating with adjustable in a broad range its composition, structure and properties and to use them as wear- and corrosion-resistant, electricinsulating and heat-resistant, and also as decorative coatings.figureFig. 1. View of the MDO surface morphology. Fig. 2. Share of the surface processing market. We have a big experience of the MDO equipment production and technologies introductions as well the understanding that commercializations of MDO have a much aspects and features which influence on its market position (Fig. 2). Joint analyses with Baker Tilly Audit shows that the market of coverings has a huge capacity, but MDO ocupated only 1% of them. Trend of growth of this market is very strong (19% till 2015), market of equipment – else more, up to 25% [2]. Active promotion of MDO should stir barriers (rather high cost of the equipment, technical restrictions, state government regulation etc.) and show its attractive features. We try to overcome all difficulties and troubles. |
||||||
|