4 Works

Hazards of electromagnetic radiation

Andrzej Jeleński
After a brief overview of the nature of electromagnetic (EM) radiation and its sources, the article presents selected findings concerning the risks caused by low-frequency EM fields emitted by 50 Hz high-voltage power lines and home appliances. These sources of radiation affect mainly the nervous system and may contribute to the development of cancer. On the other hand, the impact of high frequency EM fields emitted by radio and television transmitters, and mobile phones originate...

Influence of the rigid alumina particles added to ZrO2 ceramics stabilized with Y2O3 for its mechanical properties

Marek Boniecki, Przemysław Gołębiewski, Helena Węglarz, Anna Piątkowska, Magdalena Romaniec & Konrad Krzyżak
The effect of the phase added to ZrO2 ceramics on its mechanical properties, and in partcular on the fracture toughness, was examined using the example of Al2O3 - ZrO2 composite where ZrO2 was stabilized with 3 mol% of Y2O3. Composites of 20% wt. Al2O3 - 80 wt.% ZrO2 with different size of corundum grain were made. Vickers indenter crack resistance tests showed an increase of 21% in the value of this parameter for the samples...

Porous volumetric structures obtained by additive manufacturing technologies

Kamil Kaszyca, Wojciech Danilczuk & Rafał Zybała
The goal of our work was to develop bulk structures characterized by a variable, controlled porosity, using additive manufacturing techniques (3D printing). A technology for the fabrication of bulk materials with controllable porosity has been developed. For that purpose, the samples with constant porosity were designed and then prepared, which allowed us to learn the possible limit values. Thus, we were able to optimize the design process at the stage of the preparation of the...

Determination of the thickness of BN layers on the Al2O3 substrate by FT-IR spectroscopy

Małgorzata Możdżonek, Piotr Caban, Jarosław Gaca, Marek Wójcik & Anna Piątkowska

Registration Year

  • 2021
  • 2020

Resource Types

  • Data Paper


  • Institute of Electronic Materials Technology
  • Warsaw University of Technology
  • Lublin University of Technology