Articolo in rivista, 2021, ENG, 10.3390/app11031304

Manufacturing Optically Transparent Thick Zirconia Ceramics by Spark Plasma Sintering with the Use of Collector Pressing

Paygin, Vladimir; Dvilis, Edgar; Stepanov, Sergey; Khasanov, Oleg; Valiev, Damir; Alishin, Timofei; Ferrari, Maurizio; Chiasera, Alessandro; Mali, Vyacheslav; Anisimov, Alexander

Natl Res Tomsk Polytech Univ; Inst Photon & Nanotechnol CNR; Lavrentyev Inst Hydrodynam SB RAS

The efficiency of using the collector pressing scheme in the Spark Plasma Sintering (SPS) process has been confirmed in improving the optical, physical, and mechanical properties of yttria-stabilized zirconia (YSZ) ceramics with an increased shape factor. An approach for developing a seal surface and determining the optimal method of increasing pressure and temperature during SPS on this surface was used to optimize the consolidation modes of the materials. It has been shown that transparent/translucent YSZ ceramics with an increased shape factor (14 mm in diameter and up to 5 mm in height, h/d = 0.36) can be successfully fabricated by the SPS technique combined with the collector pressing scheme. The optical properties and microhardness of ceramics obtained using the collector scheme are better to the optical properties of ceramics obtained using the conventional uniaxial pressing scheme.

Applied sciences 11 (3), pp. 1304-1–1304-9

Keywords

collector pressing, Spark Plasma Sintering, yttrium-stabilized zirconia, transparent ceramics

CNR authors

Ferrari Maurizio, Chiasera Alessandro

CNR institutes

IFN – Istituto di fotonica e nanotecnologie