Main Sector of relevance\IRC classification 5. Electronics, IT and Telecommunication
5.33 New low-coercitivity high-frequency composite materials for small-size inventor power supplies of various optoelectronic systems
Developers’ contact information
SSPA “The Scientific and Practical Materials Research Center of the National Academy of Sciences of Belarus”
19/1/225, P. Brovka Str., 220072 Minsk
Summary
As a result of the project realization on the basis of water-atomized iron powder of ASC 100.29 type, by ferritizing their surface, subsequent compressing and synthesizing, low-coercitivity high-frequency composite material with saturation induction of 2.2 T has been developed, which operates in the frequency range of up to 100 kHz with Curie temperature over 800 °C.
Description
Creating new magnetic materials with MIM-structure is based on
elaborating the existence basics of ferromagnetic alignment in the two-phase
system with metallic conductivity for a metal magnetic and solid-state
conductivity of an oxidic magnetic.
Developing of new magnetics required solving a number of technological problems
regarding iron powder particles surface ferritizing as well as specific methods
of its consecutive sintering.
As a result of the project realization the new patently-clean technique of
obtaining ferritic coatings on iron particles surface has been developed.
In the proposed technique iron powder is placed into a special mixing chamber
using oxidizing atmosphere – as a rule, air with the pressure range of 0.1-1
atm. Alongside with the powder an additional amount of metals is infused at the
ratio corresponding to their proportion in the required ferrite. During joint
processing of iron powder and metals within the temperature range of 500–600
°C, as a result of diffusion the metals are transferred onto the iron powder
surface with the subsequent forming of a thing ferrite layer due to its
interaction with atmospheric oxygen.
Technology type
Technical advantages and economic benefits
Applying methods of powder metallurgy for manufacturing transformer cores and electric motors using alloys with MIM-structure allows to considerably reduce energy losses and their costs.
Technology differentiation and uniqueness
On the basis of the developed materials breadboard models of various electrical devices are planned to be offered, such as welding machine with operating frequency of 5 kHz and capacity of up to 3 kW, inverter power supplies from 1.5 to 400 V, high-frequency motors, flow metering valves, etc.
Context in which technology was identified
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Technological keywords
Magnetic materials with MIM-structure, high-frequency low-coercitivity composite material, saturation induction of 2.2 T, frequency range up to 100 kHz, Curie temperature over 800 °C, transformer and electric motors cores, flow metering valves.
Development Stage
Intellectual property rights
Range of applications
On the basis of the developed materials breadboard models of various electrical devices are planned to be offered, such as welding machine with operating frequency of 5 kHz and capacity of up to 3 kW, inverter power supplies from 1.5 to 400 V, high-frequency motors, flow metering valves, etc.
Classifier Used at the EU Innovation Relay Centres
Preferable Regions
Practical experience
The method of obtaining high-frequency magnetic materials has
been optimized. Method optimization includes getting the required basic
parameters of magnetic materials – iron powders composition and coating
thickness, compressing and high-frequency synthesizing parameters. The main
characteristics of magnetic materials, specifically operating frequency range,
loss due to back magnetization and other parameters have been studied.
The new patently-clean technique of obtaining ferritic coatings on iron
particles surface has been developed.
Environmental impact
None.
Type of collaboration sought
Terms and restrictions
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Available technical assistance