High-temperature hot corrosion behavior of gadolinium zirconate by vanadium pentoxide and sodium sulfate in air

Zhan Guo Liu; Jia Hu Ouyang; Yu Zhou; Sa Li

doi:10.1016/j.jeurceramsoc.2010.05.002

High-temperature hot corrosion behavior of gadolinium zirconate by vanadium pentoxide and sodium sulfate in air

Zhan Guo Liu
, Jia Hu Ouyang^*
, Yu Zhou
, Sa Li

^*Corresponding author for this work

Harbin Institute of Technology

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

45 Scopus citations

Abstract

Gadolinium zirconate (Gd₂Zr₂O₇) prepared by solid state reaction exhibited a defect fluorite-type structure. Reactions between Gd₂Zr₂O₇ ceramic and vanadium pentoxide (V₂O₅), sodium sulfate (Na₂SO₄), and V₂O₅+Na₂SO₄ mixture were investigated from 700 to 1000°C in air using an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). V₂O₅ reacts with Gd₂Zr₂O₇ to form gadolinium vanadate (GdVO₄) and monoclinic zirconia (m-ZrO₂) at 900 and 1000°C in air. However, no chemical reaction product between Na₂SO₄ and Gd₂Zr₂O₇ is found at 900 and 1000°C in air. V₂O₅ reacts with equal molar Na₂SO₄ to form sodium vanadate (NaVO₃) at 610°C. In the temperature range of 700-1000°C, Na₂SO₄+V₂O₅ mixture reacts with Gd₂Zr₂O₇ in air to form the final reaction products of GdVO₄ and m-ZrO₂.

Original language	English
Pages (from-to)	2707-2713
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	30
Issue number	12
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2010.05.002
State	Published - Sep 2010

Keywords

GdZrO
Hot corrosion
NaSO
VO

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10.1016/j.jeurceramsoc.2010.05.002

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@article{d40e60b263224506831ec6f3aca63f84,

title = "High-temperature hot corrosion behavior of gadolinium zirconate by vanadium pentoxide and sodium sulfate in air",

abstract = "Gadolinium zirconate (Gd2Zr2O7) prepared by solid state reaction exhibited a defect fluorite-type structure. Reactions between Gd2Zr2O7 ceramic and vanadium pentoxide (V2O5), sodium sulfate (Na2SO4), and V2O5+Na2SO4 mixture were investigated from 700 to 1000°C in air using an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). V2O5 reacts with Gd2Zr2O7 to form gadolinium vanadate (GdVO4) and monoclinic zirconia (m-ZrO2) at 900 and 1000°C in air. However, no chemical reaction product between Na2SO4 and Gd2Zr2O7 is found at 900 and 1000°C in air. V2O5 reacts with equal molar Na2SO4 to form sodium vanadate (NaVO3) at 610°C. In the temperature range of 700-1000°C, Na2SO4+V2O5 mixture reacts with Gd2Zr2O7 in air to form the final reaction products of GdVO4 and m-ZrO2.",

keywords = "GdZrO, Hot corrosion, NaSO, VO",

author = "Liu, \{Zhan Guo\} and Ouyang, \{Jia Hu\} and Yu Zhou and Sa Li",

year = "2010",

month = sep,

doi = "10.1016/j.jeurceramsoc.2010.05.002",

language = "英语",

volume = "30",

pages = "2707--2713",

journal = "Journal of the European Ceramic Society",

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AU - Liu, Zhan Guo

AU - Ouyang, Jia Hu

AU - Zhou, Yu

AU - Li, Sa

PY - 2010/9

Y1 - 2010/9

N2 - Gadolinium zirconate (Gd2Zr2O7) prepared by solid state reaction exhibited a defect fluorite-type structure. Reactions between Gd2Zr2O7 ceramic and vanadium pentoxide (V2O5), sodium sulfate (Na2SO4), and V2O5+Na2SO4 mixture were investigated from 700 to 1000°C in air using an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). V2O5 reacts with Gd2Zr2O7 to form gadolinium vanadate (GdVO4) and monoclinic zirconia (m-ZrO2) at 900 and 1000°C in air. However, no chemical reaction product between Na2SO4 and Gd2Zr2O7 is found at 900 and 1000°C in air. V2O5 reacts with equal molar Na2SO4 to form sodium vanadate (NaVO3) at 610°C. In the temperature range of 700-1000°C, Na2SO4+V2O5 mixture reacts with Gd2Zr2O7 in air to form the final reaction products of GdVO4 and m-ZrO2.

AB - Gadolinium zirconate (Gd2Zr2O7) prepared by solid state reaction exhibited a defect fluorite-type structure. Reactions between Gd2Zr2O7 ceramic and vanadium pentoxide (V2O5), sodium sulfate (Na2SO4), and V2O5+Na2SO4 mixture were investigated from 700 to 1000°C in air using an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). V2O5 reacts with Gd2Zr2O7 to form gadolinium vanadate (GdVO4) and monoclinic zirconia (m-ZrO2) at 900 and 1000°C in air. However, no chemical reaction product between Na2SO4 and Gd2Zr2O7 is found at 900 and 1000°C in air. V2O5 reacts with equal molar Na2SO4 to form sodium vanadate (NaVO3) at 610°C. In the temperature range of 700-1000°C, Na2SO4+V2O5 mixture reacts with Gd2Zr2O7 in air to form the final reaction products of GdVO4 and m-ZrO2.

KW - GdZrO

KW - Hot corrosion

KW - NaSO

KW - VO

UR - https://www.scopus.com/pages/publications/77953959052

U2 - 10.1016/j.jeurceramsoc.2010.05.002

DO - 10.1016/j.jeurceramsoc.2010.05.002

M3 - 文章

AN - SCOPUS:77953959052

SN - 0955-2219

VL - 30

SP - 2707

EP - 2713

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 12

ER -

High-temperature hot corrosion behavior of gadolinium zirconate by vanadium pentoxide and sodium sulfate in air

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Keywords

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