Multilayer metallic material with sacrificial pitting protection

Title of project: Multilayer metallic material with sacrificial pitting protection
Cluster: Power efficiency, energy saving, nuclear power engineering
Technology Tags or Keywords: Multilayer metallic material, bimetal, pitting, corrosion, arc welding, explosion welding.
Title: Multilayer metallic material with sacrificial pitting protection
Summary: The material may be used in mechanical engineering, oil-and-gas production, chemical industry,metallurgy and other field as a structural material operating in extremely aggressive media.
Technology Benefits: The technology improves operation life of equpment 5-15 times in comparison with stainless steels depending on medium's aggresivity.
It enables to perform low-cost and safe external diagnostics of corrosion processes, including ultrasonic examination.
The technology provides operability at high temperatures (up to 750°С).
It may consist of a minimum of expensive components. The material can be obtained through explosion welding.
Technology Applications: The material may be used in mechanical engineering, oil-and-gas production, chemical industry,metallurgy and other field as a structural material operating in extremely aggressive media.

International PCT Application number: PCT/RU2008/000620
Title of PCT application: Multilayer material with enhanced corrosion resistance (variants) and methods of its manufacturing
PCT application Date: 30.12.2012
PCT application description (abstract): The present invention concerns development of variants of structural multilayer materials of enhanced corrosion resistance, containing consecutively joint external base layers, being in direct contact with working aggressive media on one or two sides of the multilayer material, and alternating internal base and internal sacrificial layers, placed between external base layers. Herewith, base layers are made of metallic materials featuring a state of passivity over a long period of time with further development of pitting corrosion in them, and internal sacrificial layers, being in contact with aggressive media as corrosion pits penetrate deeply through previous external and internal base layers, are characterized by development of general corrosion and perform a sacrificial function in relation to external and internal base layers. The methods of manufacturing of such materials are suggested.
National application Number: 201100552
Title of national application: Multilayer material with enhanced corrosion resistance (variants) and methods of its manufacturing
National application Date: 26.09.2008
Patent Number: RU16878
Patent title: Multilayer material with enhanced corrosion resistance (variants) and methods of its manufacturing
Patent Date: 30.08.2012
Patent description (abstract): The present invention concerns development of variants of structural multilayer materials of enhanced corrosion resistance, containing consecutively joint external base layers, being in direct contact with working aggressive media on one or two sides of the multilayer material, and alternating internal base and internal sacrificial layers, placed between external base layers. Herewith, base layers are made of metallic materials featuring a state of passivity over a long period of time with further development of pitting corrosion in them, and internal sacrificial layers, being in contact with aggressive media as corrosion pits penetrate deeply through previous external and internal base layers, are characterized by development of general corrosion and perform a sacrificial function in relation to external and internal base layers. The methods of manufacturing of such materials are suggested.
Country of validity of patent: Azerbaijan republic, Kyrgyz republic, Armenian republic, Belarus republic, Kazakhstan republic, Tadjikistan republic, Russian Federation, Turkmenistan, Moldova republic
 
Organization/Company Name: LLC "RОМЕТ"
Country: Russia