A New Environmentally Friendly Process Extends the Fatigue Life of Aluminium Alloys Used in Aerospace Components

11 June 2021 Current Affairs:Indian researchers have developed an environmentally friendly process that can provide excellent corrosion resistance to high-strength aluminium (Al) alloys widely used in aerospace, textile, and automotive applications. It entails using an electrochemical method to create an oxide film on a metallic substrate.

Highlights:
♦ To meet the growing demand for cleaner industrial processes, the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), an autonomous institute under the DST, has developed an environmentally friendly process called micro-arc oxidation (MAO). 
Micro-arc Oxidation (MAO):
♦ When compared to the HA process, the process using an alkaline electrolyte provides better wear and corrosion resistance. 
♦ It is a high-voltage driven anodic-oxidation process that produces an oxide film on metallic substrates via an electrochemical method. 
♦ The MAO process developed at ARCI has been patented both in India and internationally.
 

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