74 0

Fabrication and Microstructure of Silicon Nitride/Boron Nitride Nanocomposites

Title
Fabrication and Microstructure of Silicon Nitride/Boron Nitride Nanocomposites
Author
좌용호
Issue Date
2002-11
Publisher
WILEY
Citation
Journal of the American Ceramic Society, v. 85, issue. 11, page. 2678-2688
Abstract
A chemical process for fabrication of Si3N4/BN nanocomposite was devised to improve the mechanical properties. Si3N4/BN nanocomposites containing 0 to 30 vol% hexagonal BN (h‐BN) were successfully fabricated by hot‐pressing α‐Si3N4 powders, on which turbostratic BN (t‐BN) with a disordered layer structure was partly coated. The t‐BN coating on α‐Si3N4 particles was prepared by reducing and heating α‐Si3N4 particles covered with a mixture of boric acid and urea. TEM observations of this nanocomposite revealed that the nanosized hexagonal BN (h‐BN) particles were homogeneously dispersed within Si3N4 grains as well as at grain boundaries. As expected from the rules of composites, Young's modulus of both micro‐ and nanocomposites decreased with an increase in h‐BN content, while the fracture strength of the nanocomposites prepared in this work was significantly improved, compared with the conventional microcomposites.
URI
https://ceramics.onlinelibrary.wiley.com/doi/10.1111/j.1151-2916.2002.tb00514.xhttp://eds.b.ebscohost.com/eds/detail/detail?vid=0&sid=2141b382-ccd3-43bb-9b40-f11898896d97%40sessionmgr103&bdata=Jmxhbmc9a28mc2l0ZT1lZHMtbGl2ZQ%3d%3d#AN=7852923&db=a9hhttps://repository.hanyang.ac.kr/handle/20.500.11754/157491
ISSN
0002-7820; 1551-2916
DOI
10.1111/j.1151-2916.2002.tb00514.x
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE