Iranian Company Produces Hard Nanostructure Coatings to Increase Life of Tools
Alireza Atashi Golestan, a representative of the company based at Islamic Azad University’s Damavand branch, told ANA that coatings are used in two main areas of decorative sector, which is suitable for parts like valves and furniture due to its high durability and variety of colors such as gold and blue, and another application is in the industrial sector, where the high hardness of these coatings increases the wear resistance of cutting tools like drills and dies and more than doubles their useful life.
“Hard nanostructure coatings in the mold-making sector increase the life of dies, reduce production costs, and improve the quality of parts,” he said.
Physical vapour deposition (PVD) is a process used to produce a metal vapour that can be deposited on electrically conductive materials as a thin, highly adhered pure metal or alloy coating.
In a relevant development in 2023, an Iranian nanotechnology company had also developed a PVD system which makes possible settlement of different materials with a variety of thicknesses on different substrates in a single or stacking form.
‘Sevin Plasma Surface Engineering’ company has made the product which can, for instance, deposit a sequence of multiple layers of TIN/TIAIN, with desired interfacial adhesion and high crack propagation resistance.
This system can deposit TiN and TIAIN in a z-stacking form with a nanometric thickness. Such a multilayer coating leads to good interfacial adhesion between deposited layers, desired adhesion to the underlying substrate, high abrasion resistance and hardness, and lower crack nucleation possibility due to lower residual stress.
The PVD product can be used for deposition of different materials on different substrates based on customer's demand, R&D for designing or selecting best coating and surface treatment for different operational conditions, R&D for the evaluation and characterization of nanostructured hard coatings and layers, deposition of hard coatings on tools (such as TIN, TIAIN. CrAIN and TiAISIN), coating of different instruments and parts in automobile industry (such as TIC, DLC, and CrNi) and offering the professional training to companies and industries in the surface engineering field.
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