Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Açık Bilim Politikası
Açık Bilim Politikası
Frequently Asked Questions
Frequently Asked Questions
Browse
Browse
By Issue Date
By Issue Date
Authors
Authors
Titles
Titles
Subjects
Subjects
Communities & Collections
Communities & Collections
Synthesis of zirconium tungstate-zirconia core-shell composite particles
Date
2011-11-01
Author
Khazeni, Nasser
MAVİŞ, BORA
Gündüz, Güngör
Colak, Uner
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
5
views
0
downloads
In this work, ZrW(2)O(8)-ZrO(2) core-shell composite particles were synthesized. ZrW(2)O(8) that was used in the core is a material with negative coefficient of thermal expansion, and it was synthesized from a high-pH precursor based on use of tungstic acid and zirconium acetate. Shell layer was composed of ZrO(2) nanocrystallites and precipitated from an aqueous solution by urea hydrolysis. While volume of the shell was effectively controlled by the initial zirconium ion concentration in the solutions, the rate of precipitation was a function of the ratio of initial concentrations of urea to zirconium ions. It is hypothesized that isolation of the ZrW(2)O(8) within a layer of ZrO(2), will be a key element in solving problems associated with reactivity of ZrW(2)O(8) towards other components in sintering of ceramic-ceramic composites with tuned or zero thermal expansion coefficient. (C) 2011 Elsevier Ltd. All rights reserved,
Subject Keywords
Mechanical Engineering
,
General Materials Science
,
Mechanics of Materials
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/57441
Journal
MATERIALS RESEARCH BULLETIN
DOI
https://doi.org/10.1016/j.materresbull.2011.07.006
Collections
Department of Chemical Engineering, Article