Original Technology for Vapor Galvanizing in Hydrothermal Powder Mixtures with Usage of Secondary Conversion Materials

1. Original Technology for Vapor Galvanizing in Hydrothermal Powder Mixtures with Usage of Secondary Conversion Materials________________________________ • Research Design & Technology Institute for Welding & Protective Coatings with Pilot Production (WPC-I); 12-B Platonov Street, 220071 Minsk, Belarus http://www.wpc-i.ac.by ------------------------------------------------- • ISTC B-557 Project Manager: Dr. Naum Borde-mail: nbord@wpc-i.ac.by T +375-17-239-9863, +375-29-647-5701, F +375-17-210-1117

2. Research Design & Technology Institute for Welding & Protective Coatings with Pilot Production (WPC-I) • Established in 1992 • Staff: 160 total (20 Dr. of Tech Sciences) • Research Trends:Advanced Welding Materials; Specific Protective Coatings; Computer Technologies; Studies into Metallurgical Processes with Application of Thermodynamic Software • 8 Departments, 5 Research Laboratories, Pilot Production of special- and general-purpose welding materials/alloys, high-performance protective coatings

3. Research Design & Technology Institute for Welding & Protective Coatings with Pilot Production (WPC-I) • R&D studies into sherardizing started at the State Research and Production Powder Metallurgy Concern for about a decade ago. • The outcomes of primary trials have proved high potential of the proposed technology and expediency of its industrial implementation on a wide-scale basis. • Current Results: • R&D approach for development of technological processes for obtaining protective coating appl. thermodynamic simulation. • Pilot lot of items with improved Zn-coating properties.Laboratory furnaces adjusted to shielding gas atmosphere operation.

4. Thermo-Diffusion Zinc Coatings • Research Objective To understand the structure and phase composition of Zinc coatings and their anticorrosive effects, to elaborate technology for thermo-diffusion sherardizing with use of secondary military conversion materials • General Approach Preliminary hydrothermal treatment of zinc powder,optimization of composition of saturating medium via selection of components with allowances for their joint effect on zinc thermodynamic activity

5. Thermo-Diffusion Zinc Coatings • Key Technologies, Methods and Equipment • Vapor-phase galvanizing in hydrothermal mixtures; • selection of the required composition of controlled furnace atmosphere, • ensuring cyclicity of reduction-oxidizing processes; • laboratory muffle and shaft furnaces adjusted to operation with shielding gas atmosphere • Strong Points of WPC-I in the Project • Advanced R&D approaches, • thermodynamic simulation/computerization, • sherardizing temperature increases (improved kinetics of the process), • protective Zn-coatings with specified properties obtained

6. Thermo-Diffusion Zinc Coatings • Application Areas • Fixing items • Locking fixtures • Door screens and other items exposed to atmospheric corrosion; • Sheets and pipes; • Porous items from metal powders • Coating on special-purpose items subjected to agressive marine corrosion • Treatment of small-sized items of complex configuration, • Coating on items working in the open air - road signs, fences etc

7. Thermo-Diffusion Zinc Coatings • Core Advantages of this Technology - high profitability - environmental safety - technology can be implemented at any-size industrial SME and promote involvement of former “weapons” engineering and working staff into civilscience and economy.

8. Thermo-Diffusion Zinc Coatings • Project Technical Description • Obtainment of theoretical and practical information on basic phenomena of interaction of metal surface with zinc vapors in hydrothermal-treated special powder media • Development of thermodynamic model and software for prediction of such interaction' results, based on the principle of change in zinc thermodynamic activity depending on the treatment mode/regime and the composition of saturating medium

9. Thermo-Diffusion Zinc Coatings • Expected Outcomes • Original sherardizing technology, allowing to receive high-performance zinc coatings; • assured 3-5 times-increased corrosion resistance; • design of specific furnace installation for this technology implementation. The developed technology will allow realize reduction of saturating mixtures, as well as to use secondary conversion materials as special-purpose additions.

10. Thermo-Diffusion Zinc Coatings • Output • Tailored approach for development of special-purpose materials and protective coatings with application of thermodynamic simulation; • “Final product” of such process is high-performance zinc coatings with improved technological and operational properties; • Ready to use technologies for reclamation of hard/heavy metal scrap & obtainment of special alloying additions of type FeMeB/B,C (where Me-Cr,Ti,W,Si,Mn,Mo etc) are available

11. Thermo-Diffusion Zinc Coatings

12. Original Technology for Vapor Galvanizing in Hydrothermal Powder Mixtures with Usage of Secondary Conversion Materials • Cooperation Partners Zinc Development Center (Russian Federation), International Zinc Association Europe (HQ in Belgium) • Possible Cooperation • R&D Collaboration • License • Joint Lab • Technology Transfer • Joint Venture