Preparation of yttrium, lanthanum, cerium, and neodymium basic carbonate particles by homogeneous precipitation

Journal Article · Wed Jul 01 04:00:00 EDT 1987 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1987.tb00087.x· OSTI ID:6109241

Akinc, M; Sordelet, D ^[1]

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1. Iowa State Univ., Ames (USA)

Uniform yttrium, lanthanum, cerium, and neodymium basic carbonate particles were prepared by homogeneous precipitation. Powders were characterized with respect to size, shape, crystal structure, and thermal decomposition behavior. Yttria precursor particles were spherical, monosized (0.4 {mu}m), and amorphous; whereas lanthana, neodymia, and ceria precursors were prismatic (ranging from 1 to 6 {mu}m in size) and crystalline. Crystal structure was found to be ancylite-type orthorhombic symmetry in all three cases. Upon heating in air, yttrium, lanthanum, and neodymium precursors underwent two-step decomposition to first form oxycarbonate and then oxide. Cerium hydroxycarbonate decomposed in a single step to form the oxide.

• OSTI ID: 6109241
• Journal Information: Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 2:3A; ISSN ACEME; ISSN 0883-5551
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CARBON COMPOUNDS
CARBONATES
CERIUM CARBONATES
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL PREPARATION
COLLOIDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DISPERSIONS
EXPERIMENTAL DATA
INFORMATION
LANTHANUM CARBONATES
LANTHANUM COMPOUNDS
MEASURING METHODS
NEODYMIUM CARBONATES
NEODYMIUM COMPOUNDS
NUMERICAL DATA
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM CARBONATES
YTTRIUM COMPOUNDS