Crack disappearance by high-temperature oxidation of alumina toughened by Ni nano-particles

Ana L. Salas-Villaseñor, Jose Lemus-Ruiz, Makoto Nanko, Daisuke Maruoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

Crack disappearance by high-temperature oxidation was studied in alumina (Al2O3) composites toughened by Ni nanoparticles. This process is performed in air at temperature ranging from 1000 to 1300°C for 1 to 48 h. The results showed that crack disappearance depends on both annealing temperature and time. Complete crack disappearance in this composite was confirmed at lower temperatures for long oxidation period, 1100°C for 48 h, and higher temperature for shorter time, 1300°C for 1 h in air. The crack disappearance mechanism was explained on the basis of the formation of NiAl 2O4 spinel on sample surfaces produced by the oxidation reaction during the heat treatment.

Original languageEnglish
Title of host publicationAdvances in Semiconducting Materials
Pages34-43
Number of pages10
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventAdvances in Semiconducting Materials - Cancun, Quintana Roo, Mexico
Duration: 2007 Oct 282007 Nov 1

Publication series

NameAdvanced Materials Research
Volume68
ISSN (Print)1022-6680

Other

OtherAdvances in Semiconducting Materials
CountryMexico
CityCancun, Quintana Roo
Period07/10/2807/11/1

Keywords

  • Alumina
  • Composites
  • Crack healing
  • Diffusion
  • High temperature oxidation
  • Nickel

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Crack disappearance by high-temperature oxidation of alumina toughened by Ni nano-particles'. Together they form a unique fingerprint.

Cite this