Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Spontaneous adsorption effect of graphitic carbon nitride nanosheets to improve sintering behavior of yttria-stabilized zirconia microbeads

Authors
Won Kim, DongKim, Eun-JeongLee, Chul-LeeMoon, Kyoung-Seok
Issue Date
May-2024
Publisher
Elsevier B.V.
Keywords
Ceramic microbead; g-C<sub>3</sub>N<sub>4</sub> nanosheet; Spontaneous adsorption; Yttria-stabilized zirconia
Citation
Applied Surface Science, v.654
Indexed
SCIE
SCOPUS
Journal Title
Applied Surface Science
Volume
654
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/69691
DOI
10.1016/j.apsusc.2024.159447
ISSN
0169-4332
1873-5584
Abstract
Yttria-stabilized zirconia (YSZ) is a ceramic material in which the zirconium dioxide structure is stabilized at room temperature by adding yttrium oxide. However, the YSZ formed by the thick film process on a pre-sintered dense substrate suffers from sintering problems such as different sintering shrinkage rates due to phase transitions and thermal conductivity. This in turn can lead to de-bonding, cracking, delamination, and abnormal growth. We prepared a spherical YSZ green body of approximately 38 μm diameter formed by an organic binder based on a sintered YSZ seed with 15 to 20 μm diameter. In addition, the application of two-dimensional g-C3N4 nanosheets that can be adsorbed on the surface and pores of the green body before the sintering process was evaluated. The YSZ green body with adsorbed surface-modified g-C3N4 nanosheets could be synthesized by stable spontaneous adsorption due to zeta-potential attraction onto the surface of zirconia particles in an aqueous solution. Consequentially, the formation of large grains due to abnormal grain growth was reduced as g-C3N4 was adsorbed. The spontaneous adsorption of nanosheets controls the surface diffusion mechanism by sequentially lowering the energy from a high surface energy in the initial stage of sintering. Uniform grain growth thus can be induced according to the activation energy level of the controlled surface diffusion. © 2024 Elsevier B.V.
Files in This Item
There are no files associated with this item.
Appears in
Collections
공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Moon, Kyoung Seok photo

Moon, Kyoung Seok
대학원 (나노신소재융합공학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE