Technologies available for licensing, investment, joint ventures and R&D contracts in Ukraine, Azerbaijan, Georgia, Moldova, Uzbekistan

Frontpage Slideshow (version 2.0.0) - Copyright © 2006-2008 by JoomlaWorks

Google Translate

Patenting Information

Tag Cloud



Free counters!

Home Material Sciences Soft magnetic amorphous and nanocrystalline alloys for industry

Soft magnetic amorphous and nanocrystalline alloys for industry

Description

Soft magnetic amorphous and nanocrystalline alloys in a number of applications (power pulse medium frequency transformers, current measuring transformers, electric motors, protective reactors, phase shift correctors, chokes etc.) already successfully substitute conventional crystalline rolled soft magnetic materials (transformer steel, permalloys) and ferrites. Realization of innovation developments of the G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine and the MELTA Ltd in the field of high-productivity technology of rapid (up to 106 K/s) quenching of melts (RQM) enables obtaining the materials with the unique magnetic, mechanical and chemical properties, particularly ribbons of amorphous alloys, which thickness doesn’t exceed 30-50μm. The Planar Flow Casting (PFC) method lies in the RQM technology as the well-known main component of nanotechnologies in metallurgical (micrometallurgy) and electrical industries.

Innovative Aspect and Main Advantages

Produced encapsulated amorphous and nanocrystalline tape wound cores made of new alloys and technology of their manufacture ensure high heat-time stability of their initial magnetic permeability and other magnetic characteristics. The high competitive ability of products caused by combination of high magnetic characteristics, thermal stability, mechanical strength, certain price attraction due to relatively low cost of production.

New amorphous and nanocrystalline cores with high heat-conducting outer insulation can work for long periods at the temperatures up to 1800C and frequencies 0.05 - 5MHz and are characterized by: initial magnetic permeability (at 100 kHz) ≥ 25000;
permeability drop at exposure 1300C for 2000 hrs ≤ 20%.


Areas of Application

In electronics, electrical engineering, aircraft industry.

The existing market requirements are today estimated at several hundreds of millions of small-sized (weighing from 0.1 to 3g) magnetic cores per year and demand for such products is redoubled each year in the world.

Examples of application and manufacture are as follows:

  • High grade compact electromagnetic noise filters (CMC) (high magnetic permeability at frequencies >100 kHz is important).
  • Matching small-size HF transformers (high values of saturation induction and initial permeability allow minimizing dimensions of transformers and added distortions of transformed or transmitted signals.
  • Chokes of differential filters of small dimensions (high Bs in combination with maximum low core losses at high timing frequencies and elevated temperatures, 140оС, is important).
  • Electron-optical information display and monitoring systems with minimum overall dimensions (high level of temperature stability and mechanical strength of cores are important).



Amorphous ribbon production process and magnetic cores made of it
Fig.1 Amorphous ribbon production process and magnetic cores made of it.

Stage of Development

Functioning prototypes of necessary technological equipment were designed and manufactured by IMP of NAS of Ukraine and by MELTA Ltd. Design documentation has been prepared for manufacture of equipment with annual output about 20 ton amorphous ribbons. Methods have been developed and equipment has been designed for manufacture of toroidal, rod and C-shaped tape wound cores, their heat and heat-magnetic treatment, encapsulation or overall polymeric coat; functioning prototypes of this equipment were manufactured.

New six grades of amorphous and nanocrystalline alloys have been developed and are now produced. In particular, nanocrystalline (FeSiB)96,6(CuNb)3,4–(MM-1N) and (FeSiB)96(CuNb)4 – (MM-11N) alloys showed themselves well and their small volumes are manufactured at the research and production company – MELTA Ltd. Beginning from 2000 the company produces annually about 1 ton of magnetic cores of various purpose as well as mass and overall dimensions.

Contact Details

Contact person: Valery V. Maslov, professor, D.Sc.
Developer: G.V.Kurdyumov Institute for Metal Physics, N.A.S. of Ukraine
Address: 36 Acad. Vernadsky Blvd., 03142 Kyiv, Ukraine
Phone/fax: +(380 44) 424 25 61,
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Producer: MELTA Ltd.
Viktor K. Nosenko, D.Sc.
Address: 36 Acad. Vernadsky Blvd., 03142 Kyiv, Ukraine
Phone/fax: +(380 44) 424 35 05,
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Add comment


Security code
Refresh

For additional technologies go to: http://www.stcu.int