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RRJOMS | Volume 5 | Issue 4 | July, 2017
July 27-29, 2017 Vancouver, Canada
10
th
International Conference on
Emerging Materials and Nanotechnology
Strategic modification of nanostability for super thermal insulating materials
Jingyang Wang
Chinese Academy of Sciences, China
T
he critical challenge of current nanoscale oxide super thermal insulation materials, such as SiO
2
and Al
2
O
3
nano-particle
aggregates and their composites, is the critical trade-off between extremely low thermal conductivity and unsatisfied thermal
stability (nanostability typically below 1100
o
C). It is crucially important to modify current materials and further discover novel
candidates which could balance the two key properties. This presentation shows progresses on optimal thermal stability of modified
Al
2
O
3
nano-particle aggregate; and in addition, new candidates of super thermal insulation materials, such as nano-Si
3
N
4
and nano-
SiC, which are commonly believed as excellent heat conductors. Especially, the new nano-systems exhibited good nanostability up
to 1500°C. The striking results incorporated superior sintering stability of structural ceramics as SiC and Si
3
N
4
with multiple phonon
scattering mechanisms in nano-materials. It is possible to put forward this novel concept to design and search new types of high
temperature thermal insulation materials through nano-scale morphology engineering of structural ceramics with excellent thermal
stability, regardless their high intrinsic lattice thermal conductivities.
Biography
Jingyang Wang is the Distinguished Professor and Division Head in the High-performance Ceramics Division at the Shenyang National Laboratory for Materials
Science, China. He has been internationally recognized for his sustained contributions to innovative technology in processing bulk, low-dimensional and porous
ceramics, and to fundamental understanding of multi-scale structure-property relationship of advanced structural ceramics. His works have extensively covered
fundamental and technological developments of carbides, nitrides, oxynitrides, silicates, and hafnates for extreme environmental applications. He has published
185 peer-reviewed SCI papers (WoS H-index factor 38), holds 18 registered patents, and has delivered more than 50 keynote/invited lectures. He was the recipient
of Acta Materialia Silver Medal (2016) and National Leading Talent of Young and Middle-aged Scientists (China, 2015), and served as the Chair-elect (2016) of
Engineering Ceramic Division of The American Ceramic Society (ACerS) and the Program Chair of 41st ICACC hosted by ACerS in Florida.
jywang@imr.ac.cnJingyang Wang, Res. Rev. J Mat. Sci. 2017
DOI: 10.4172/2321-6212-C1-002