Published 1997 | Version v1
Miscellaneous Metadata-only

Influence of the preparation variables and the cerium addition on the microstructure of the Nb2 O5 obtained by the polymeric precursor method

Creators

  • 1. Sao Carlos Univ., SP (Brazil). Dept. de Quimica

Description

The influence of the synthesis methodology on the structure of Nb2 O5 prepared by Pechini method was investigated. The effect of the content of the reagents on the surface areas was analyzed by using the factorial design method with two levels changing the molar ratio of citric acid: ethylene glycol (AC:EG) and citric acid: niobium complex (AC:Nb). The effect of the thermal treatment temperature was analyzed by X-ray diffraction analysis indicating that the Nb2 O5 is present in the hexagonal and orthorhombic phase in the investigated temperature range. The effect of the cerium addition was analyzed by X-ray diffraction and surface area characterization. (author)

Part of:
Proceedings of the 41. Brazilian congress on ceramics. 2. Congress on ceramics and industrial minerals from MERCOSUL. v. 2

Additional details

Additional titles

Original title (Portuguese)
Efeito das variaveis de preparacao e da adicao de cerio na microestrutura do Nb

Publishing Information

Imprint Title
Proceedings of the 41. Brazilian congress on ceramics; 2. Congress on ceramics and industrial minerals from MERCOSUL. v. 2
Imprint Pagination
465 p.
Journal Page Range
p. 858-861

Conference

Title
41. Brazilian congress on ceramics; 2. Congress on ceramics and industrial minerals from MERCOSUL
Original Conference Title
41. Congresso brasileiro de ceramica
Dates
3-6 Jun 1997
Place
Sao Paulo, SP (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
30005124
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CERIUM; CERIUM ADDITIONS; MICROSTRUCTURE; NIOBIUM; NIOBIUM OXIDES; POLYMERS; X-RAY DIFFRACTION
Descriptors DEC
CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL STRUCTURE; DIFFRACTION; ELEMENTS; METALS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH ADDITIONS; RARE EARTHS; SCATTERING; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
10 refs., 7 figs., 2 tabs. Imprint:Anais do 41. Congresso brasileiro de ceramica; 2. Congresso de ceramica e minerais industriais do MERCOSUL. v. 2