Examination of milled h-BN addition on sintered Si 3 N 4 /h-BN ceramic composites

Katalin Balázsi, Mónika Furko, Zsolt Fogarassy, C. Balázsi

Research output: Contribution to journalArticle

Abstract

Silicon nitride (Si 3 N 4 ) ceramics containing 1 and 5 wt.% of hexagonal boron nitride (h-BN) were prepared by attrition milling and hot-isostatic pressing. Thorough morphological characterizations have been carried out to reveal the influence of the milling parameters on the size of the h-BN additives. The results confirmed significant decrease in h-BN particle size by increasing milling time. The transmission electron microscopy observations revealed that the h-BN particles were incorporated into the ceramic matrix. The results showed that the increase of the h-BN content decreased significantly the hardness of materials. Moreover, the hardness values were higher when the size of h-BN was larger. The same tendency was observed in the case of Young’s modulus.

Original languageEnglish
Pages (from-to)357-365
Number of pages9
JournalProcessing and Application of Ceramics
Volume12
Issue number4
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

Boron nitride
Composite materials
Hardness
Hot isostatic pressing
Silicon nitride
boron nitride
Elastic moduli
Particle size
Transmission electron microscopy

Keywords

  • H-BN
  • Hot pressing
  • Mechanical properties
  • Milling
  • Si N
  • Structure

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Examination of milled h-BN addition on sintered Si 3 N 4 /h-BN ceramic composites . / Balázsi, Katalin; Furko, Mónika; Fogarassy, Zsolt; Balázsi, C.

In: Processing and Application of Ceramics, Vol. 12, No. 4, 01.01.2018, p. 357-365.

Research output: Contribution to journalArticle

Balázsi, Katalin ; Furko, Mónika ; Fogarassy, Zsolt ; Balázsi, C. / Examination of milled h-BN addition on sintered Si 3 N 4 /h-BN ceramic composites In: Processing and Application of Ceramics. 2018 ; Vol. 12, No. 4. pp. 357-365.
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