Sintering of lanthanum zirconate

Jalajakumari Nair, Padmakumar Nair, Giel B.M. Doesburg, Jan G. van Ommen, Julian R.H. Ross, Anthonie J. Burggraaf, Fujio Mizukami

Research output: Contribution to journalArticleAcademicpeer-review

40 Citations (Scopus)


Lanthanum zirconate (La2Zr2O7) was prepared by coprecipitating lanthanum nitrate and zirconyl oxychloride at pH 10, followed by ethanol washing. The initial high surface area of 304 m2·g−1 decreased very rapidly with increased sintering temperature and decreased to an immeasurably small value after heating at 1200°C for 15 h. The major parameters studied were phase evolution, crystallite size, porosity, surface area reduction, and shrinkage during sintering. Three temperature regions were identified based on these studies: below the crystallization temperature, between the crystallization temperature and 1100°C, and above 1100°C. The main contribution of surface area reduction in the region 800°–1100°C was due to surface diffusion; the main contribution above 1100°C was due to grain-boundary diffusion coupled with surface diffusion.
Original languageEnglish
Pages (from-to)2066-2072
Number of pages7
JournalJournal of the American Ceramic Society
Issue number8
Publication statusPublished - Aug 1999


Dive into the research topics of 'Sintering of lanthanum zirconate'. Together they form a unique fingerprint.

Cite this