Sol–Gel Synthesis of Strontium Pyroniobate and Calcium Pyroniobate

Alamanda V. Prasadarao; Ulagaraj Selvaraj; Sridhar Komarneni; Amar S. Bhalla

doi:10.1111/j.1151-2916.1992.tb05491.x

Sol–Gel Synthesis of Strontium Pyroniobate and Calcium Pyroniobate

Alamanda V. Prasadarao, Ulagaraj Selvaraj, Sridhar Komarneni, Amar S. Bhalla

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Strontium and calcium pyroniobates were prepared by a sol–gel process, using strontium/calcium metal and niobium ethoxide as precursors. The formation of Sr₂Nb₂O₇ occurred at 750°C via an intermediate perovskite phase of composition close to Sr_0.82NbO₃. The crystallization of Ca₂Nb₂O₇ occurred at 600°C directly without any intermediate phases. Sintered Sr₂Nb₂O₇ and Ca₂Nb₂O₇ pellets showed a preferred grain orientation. Microstructural studies revealed an increase in grain growth and associated orientation with sintering temperature.

Original language	English (US)
Pages (from-to)	2697-2701
Number of pages	5
Journal	Journal of the American Ceramic Society
Volume	75
Issue number	10
DOIs	https://doi.org/10.1111/j.1151-2916.1992.tb05491.x
State	Published - Oct 1992

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

Access to Document

10.1111/j.1151-2916.1992.tb05491.x

Cite this

@article{620fcaec067040b28e18419e2fc1cd96,

title = "Sol–Gel Synthesis of Strontium Pyroniobate and Calcium Pyroniobate",

abstract = "Strontium and calcium pyroniobates were prepared by a sol–gel process, using strontium/calcium metal and niobium ethoxide as precursors. The formation of Sr2Nb2O7 occurred at 750°C via an intermediate perovskite phase of composition close to Sr0.82NbO3. The crystallization of Ca2Nb2O7 occurred at 600°C directly without any intermediate phases. Sintered Sr2Nb2O7 and Ca2Nb2O7 pellets showed a preferred grain orientation. Microstructural studies revealed an increase in grain growth and associated orientation with sintering temperature.",

author = "Prasadarao, {Alamanda V.} and Ulagaraj Selvaraj and Sridhar Komarneni and Bhalla, {Amar S.}",

year = "1992",

month = oct,

doi = "10.1111/j.1151-2916.1992.tb05491.x",

language = "English (US)",

volume = "75",

pages = "2697--2701",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

number = "10",

}

TY - JOUR

T1 - Sol–Gel Synthesis of Strontium Pyroniobate and Calcium Pyroniobate

AU - Prasadarao, Alamanda V.

AU - Selvaraj, Ulagaraj

AU - Komarneni, Sridhar

AU - Bhalla, Amar S.

PY - 1992/10

Y1 - 1992/10

N2 - Strontium and calcium pyroniobates were prepared by a sol–gel process, using strontium/calcium metal and niobium ethoxide as precursors. The formation of Sr2Nb2O7 occurred at 750°C via an intermediate perovskite phase of composition close to Sr0.82NbO3. The crystallization of Ca2Nb2O7 occurred at 600°C directly without any intermediate phases. Sintered Sr2Nb2O7 and Ca2Nb2O7 pellets showed a preferred grain orientation. Microstructural studies revealed an increase in grain growth and associated orientation with sintering temperature.

AB - Strontium and calcium pyroniobates were prepared by a sol–gel process, using strontium/calcium metal and niobium ethoxide as precursors. The formation of Sr2Nb2O7 occurred at 750°C via an intermediate perovskite phase of composition close to Sr0.82NbO3. The crystallization of Ca2Nb2O7 occurred at 600°C directly without any intermediate phases. Sintered Sr2Nb2O7 and Ca2Nb2O7 pellets showed a preferred grain orientation. Microstructural studies revealed an increase in grain growth and associated orientation with sintering temperature.

UR - http://www.scopus.com/inward/record.url?scp=0043131285&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0043131285&partnerID=8YFLogxK

U2 - 10.1111/j.1151-2916.1992.tb05491.x

DO - 10.1111/j.1151-2916.1992.tb05491.x

M3 - Article

AN - SCOPUS:0043131285

SN - 0002-7820

VL - 75

SP - 2697

EP - 2701

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 10

ER -

Sol–Gel Synthesis of Strontium Pyroniobate and Calcium Pyroniobate

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this