Influence investigation of technological parameters on the properties of celsian­slavsonite ceramics

  • Ya. М. Pitak
  • G. V. Lisachuk
  • R. V. Krivobok
  • A. V. Zakharov
  • V. V. Voloshchuk
  • E. V. Chefranov
  • М. S. Maystat
Keywords: celsian, slavsonite, radiotransparent ceramics, dielectric constant, water absorption, open porosity, microstructure.

Abstract

The article discusses the manufacturing technological parameters of a radiotransparent ceramic celsian­slavsonite material Ba0.5Sr0.5Al2Si2O8 in a ratio of their crystalline phases of 50:50.

The technology for creating the prototype took place in two stages. The first stage — synthesis of combined celsian­slavsonote briquette was carried out in a silica furnace with an accelerated mode: the temperature set speed was 15 deg/min, the maximum firing temperature was 1300  C with holding for 1 hour. Then the synthesized briquette was ground in a planetary mill for 10 minutes (< 0.063 mm). The second stage took place at temperatures of 1300, 1350 and 1400  C with holding at a maximum temperature of 1, 2 and 3 hours.

Studies of samples on dielectric properties, water absorption and open porosity were carried out. The phase composition of obtained materials and their microstructure were investigated. The relationship between a dielectric constant and a grain size of the crystalline phase (Ba0.5Sr0.5Al2Si2O8) was established.

The best indicators had the samples burned at a temperature of 1300—1350  C in an oxidized environment, with holding at a maximum temperature of 1—2 hours (ε = 4.264.52, W = 1.842.31  %, Pоpen = 4.355.43  %).

Published
2019-12-31
How to Cite
PitakY. М., Lisachuk, G. V., Krivobok, R. V., Zakharov, A. V., Voloshchuk, V. V., Chefranov, E. V., & MaystatМ. S. (2019). Influence investigation of technological parameters on the properties of celsian­slavsonite ceramics. Scientific Research on Refractories and Technical Ceramics, 119, 82-88. https://doi.org/10.35857/2663-3566.119.08