Physicochemical regularities of a high-voltage electroporcelain formation with a sintering temperature of 1200 °C

• Veröffentlicht in: Functional Materials
• Datum: 2018
• 1. Verfasser: Bohdanova, K.B.
• Format: Artikel
• Sprache: English
• Veröffentlicht: НТК «Інститут монокристалів» НАН України 2018
• Schlagworte: Technology
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/157438
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Physicochemical regularities of a high-voltage electroporcelain formation with a sintering temperature of 1200 °C / K.B. Bohdanova // Functional Materials. — 2018. — Т. 25, № 4. — С. 823-828. — Бібліогр.: 12 назв. — англ.

The composition and technological parameters of manufacturing low-temperature electroporcelain with complex of high electrophysical and mechanical properties have been developed. With the use of differential thermal, X-ray phase, IR spectroscopic and electron microscopic methods of analysis, physicochemical regularities in the formation of electrical porcelain at 1200°C have been established. It is shown that high dielectric and mechanical characteristics of low-temperature porcelain (ρV = 4.1·10¹⁴ Ohm·cm; E = (29-30) kV·mm⁻¹; tgδ·103 = 12.11; σr = 31 MPa) are provided by activating the sintering with the participation of a modified feldspar melt and intensive formation of the mullite phase in the form of microfibers with a predominant size of ~ 0.007-8 &mu>m with the addition of complex mineralizer additives (12 wt.% pyrophyllite and 0.3 wt.% titanium dioxide).