Details

Autor(en) / Beteiligte

• Sukhanov, M. V.
• Pet’kov, V. I.
• Firsov, D. V.

Titel

Sintering mechanism for high-density NZP ceramics

Ist Teil von

• Inorganic materials, 2011-06, Vol.47 (6), p.674-678

Ort / Verlag

Dordrecht: SP MAIK Nauka/Interperiodica

Erscheinungsjahr

2011

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We have studied the shrinkage kinetics and mechanism of NaZr 2 (PO 4 ) 3 containing inorganic additives. The sintering of NaZr 2 (PO 4 ) 3 containing ZnO microadditives is shown to follow a liquid-phase mechanism. Effective sintering aids include oxides of metals in the oxidation states 2+ and 3+ that are capable of reacting with sodium zirconium phosphate to form solid solutions. Ceramics having a relative density of 96–99% and isostructural with NaZr 2 (PO 4 ) 3 can be prepared by adding 0.75–2.0 wt % ZnO as a sintering aid capable of influencing the structure of grain boundaries in ceramic materials, pressing green bodies at 200–300 MPa, and sintering them at 1000–1100°C for 7–15 h.