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 Thick-film NTC thermistor materials

Thick-film NTC thermistor materials

Description

Mixed transition-metal manganite ceramics of NiMn2O4-CuMn2O4-MnCo2O4 system are widely used as functional materials for thick-film pastes. An essential problem is to retain a high level of temperature sensitivity for the prepared thick-film thermistors. This problem is resolved mainly by proper pastes formation and correctly arranged sintering route.

At the present, the prepared thick-film NTC (negative temperature coefficient) thermistors possessing the following characteristics:

  • nominal sheet resistivity 1,000 kOm/m2,
  • temperature sensitivity 3500 K

Can be fabricated via conventional screen-printing technological route. The further research aimed on development of thick-film materials with lower values of nominal sheet resistance is foreseen in the future.

Innovative Aspect and Main Advantages

The developed functional thick-film materials – spinel-type thermistor ceramics composits – are patented in Ukraine. According to the environmental policy of the European Union, the lead-free thick films are proposed. In comparison to discrete analogues (Fig. 1), these thick-film thermistors are distinguished by:

  • design flexibility
  • preparation miniaturization and
  • construction cost effectiveness.

Areas of Application

  • Temperature Compensation
  • Temperature Measurement & Control

thick-film thermistors and bulk analogue
Fig. 1 View of planar-type thick-film thermistors
and bulk analogue (for comparison)

Stage of Development

We look for further application possibilities of the developed thick-film materials. Cooperation for further research is also appropriate.

Contact Details

Lviv Regional Department of Academy of the Technological Sciences of Ukraine
Contact person: Dr. N. Vakiv
202, Stryjska st., Lviv, 79031, Ukraine
Tel: 38 0322 631065;
Fax: 38 0322 94 9735
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