Design and formulation of polyurethane foam used for porous alumina ceramics
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Polymer Research"
DOI: 10.1007/s10965-018-1535-1
Abstract: The present work studied a simple direct foaming method for preparation of porous alumina ceramics by expansion of a ceramic suspension based on polyurethane (PU) foam system. The effects of polyurethane formulas including catalyst composition,… read more here.
Keywords: foam; polyurethane; alumina ceramics; polyurethane foam ... See more keywords
Aluminum Oxide and Alumina Ceramics (Review). Part 2. Foreign Manufacturers of Alumina Ceramics. Technologies and Research in the Field of Alumina Ceramics1
Sign Up to like & getrecommendations! Published in 2019 at "Refractories and Industrial Ceramics"
DOI: 10.1007/s11148-019-00305-1
Abstract: This paper contains information on foreign manufacturers of alumina ceramics, and mainly, fine technical ceramics. The data concerning mechanical, thermal, and dielectric properties of the products manufactured by different companies are presented. Several methods for… read more here.
Keywords: ceramics review; manufacturers alumina; foreign manufacturers; aluminum oxide ... See more keywords
Improved transparency and hardness in α-alumina ceramics fabricated by high-pressure SPS of nanopowders
Sign Up to like & getrecommendations! Published in 2017 at "Ceramics International"
DOI: 10.1016/j.ceramint.2016.09.150
Abstract: Abstract Nanocrystalline alumina powder with an average crystallite size of ≤50 nm has been consolidated by spark plasma sintering (SPS) and hot pressing (HP) with a view to achieving dense, fine grained alumina bodies that display… read more here.
Keywords: transparency hardness; improved transparency; alumina ceramics; hardness alumina ... See more keywords
Enhanced properties of pure alumina ceramics by oscillatory pressure sintering
Sign Up to like & getrecommendations! Published in 2017 at "Ceramics International"
DOI: 10.1016/j.ceramint.2017.12.133
Abstract: Abstract A novel oscillatory pressure sintering (OPS) process to consolidate high-quality pure alumina ceramics is reported. The microstructure of the ceramics prepared by OPS develops into a higher final density, a smaller and a narrower… read more here.
Keywords: enhanced properties; pure alumina; alumina ceramics; pressure sintering ... See more keywords
Dielectric breakdown strength of alumina ceramics reinforced by fractal dendritic Ca9Al(PO4)7 as the second crystalline phase
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2020.154811
Abstract: Abstract In polycrystalline ceramics, charge trapping property has important impact on the dielectric breakdown strength (DBS). In this work, alumina ceramics with Ca9Al(PO4)7(CAP) as the second crystalline phase were synthesized using coarse alumina as main… read more here.
Keywords: alumina; breakdown strength; fractal dendritic; dielectric breakdown ... See more keywords
Optical, mechanical and fractographic response of transparent alumina ceramics on erbium doping
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2017.02.043
Abstract: Abstract Alumina ceramics found their utilisation in many applications which can be further extend by attaining functional properties; in our case the transparency obtained through precise processing and photoluminescence due to erbium (Er) doping. In… read more here.
Keywords: fractographic response; erbium doping; response transparent; mechanical fractographic ... See more keywords
Effect of pores on dielectric breakdown strength of alumina ceramics via surface and volume effects
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.03.024
Abstract: Abstract To investigate the effect of pores on the dielectric breakdown (DB) of alumina ceramics under AC voltage, we implant pores at different positions (surface, interior, and the whole body) of the ceramic samples by… read more here.
Keywords: breakdown strength; effect; dielectric breakdown; alumina ceramics ... See more keywords
Fabricating a denser SiO2-CaO co-doped 95 wt% alumina ceramic to verify that small pores have no effect on the dielectric breakdown strength of alumina ceramics
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.07.024
Abstract: Abstract To verify an increase in porosity due to small pores dose not reduce the dielectric breakdown strength (DBS) of alumina ceramics, we sinter a SiO2-CaO co-doped 95 wt% alumina ceramic via step-controlled atmosphere sintering (first… read more here.
Keywords: small pores; breakdown strength; sio2 cao; dielectric breakdown ... See more keywords
Flash joining of alumina ceramics under a small current density
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The European Ceramic Society"
DOI: 10.1016/j.jeurceramsoc.2020.11.025
Abstract: Abstract The ceramic joining using electric field (E-field) has garnered significant research attention due to the decreased joining barrier and enhanced reliability. However, the underlying mechanism of E-field assisted joining remains unclear. Herein, we report… read more here.
Keywords: small current; field; joining alumina; ceramics small ... See more keywords
The influence of synthesis modes of alumina ceramics doped with manganese on sensitivity to ionizing radiation
Sign Up to like & getrecommendations! Published in 2020 at "Radiation Measurements"
DOI: 10.1016/j.radmeas.2020.106410
Abstract: Abstract A temperature growth and a decrease in impurity ion concentration result in a sensitivity increase of Al2O3:Mn ceramics to the ionizing radiation. The highest sensitivity to the ionizing radiation for Mn-doped alumina ceramics is… read more here.
Keywords: temperature; sensitivity ionizing; ionizing radiation; alumina ceramics ... See more keywords
Luminescence Quenching in Magnesium-Doped Alumina Ceramics
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Solid State"
DOI: 10.1134/s1063783419050408
Abstract: The effect of magnesium impurity on luminescent properties of alumina ceramics sintered at high temperatures under vacuum is studied by pulsed cathodoluminescence, photoluminescence, and thermoluminescence. At dopant concentrations >1 wt %, high-temperature synthesis results in… read more here.
Keywords: quenching magnesium; alumina ceramics; luminescence quenching; magnesium doped ... See more keywords