TEM study of B2 + L12 decomposition in a nanoscale Ni-rich Ni-Al film

D. Schryvers, M. Yandouzi, L. Tóth

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The decomposition of a free-standing monophase B2 Ni62.5Al37.5 thin film with nanoscale dimensions, for thickness as well as lateral grain size, is investigated by in situ and subsequent high resolution transmission electron microscopy. The atomic structure, micro structure and texture are unchanged until a temperature of 450°C is reached above which a two-phase mixture of B2 + L12 is formed. The predominant texture of the B2 film is inherited in the L12 grains and even improved during the passage of the transformation front. As a result many small angle tilt boundaries exist in between neighbouring [001] L12 grains. Around 1000°C some of the L12 grains grow in thickness forming microcrystals and using material from nearby grains thus deteriorating the integrity of the film. Occasionally also fcc Ni microcrystals with up to 15 at.% disordered Al are observed.

Original languageEnglish
Pages (from-to)126-133
Number of pages8
JournalThin Solid Films
Volume326
Issue number1-2
Publication statusPublished - Aug 4 1998

Fingerprint

Transmission electron microscopy
Decomposition
decomposition
transmission electron microscopy
Microcrystals
microcrystals
textures
Textures
High resolution transmission electron microscopy
atomic structure
integrity
grain size
Thin films
microstructure
Microstructure
high resolution
thin films
Temperature
temperature

Keywords

  • Alloys
  • Evaporation
  • Phase transition
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

TEM study of B2 + L12 decomposition in a nanoscale Ni-rich Ni-Al film. / Schryvers, D.; Yandouzi, M.; Tóth, L.

In: Thin Solid Films, Vol. 326, No. 1-2, 04.08.1998, p. 126-133.

Research output: Contribution to journalArticle

Schryvers, D, Yandouzi, M & Tóth, L 1998, 'TEM study of B2 + L12 decomposition in a nanoscale Ni-rich Ni-Al film', Thin Solid Films, vol. 326, no. 1-2, pp. 126-133.
Schryvers, D. ; Yandouzi, M. ; Tóth, L. / TEM study of B2 + L12 decomposition in a nanoscale Ni-rich Ni-Al film. In: Thin Solid Films. 1998 ; Vol. 326, No. 1-2. pp. 126-133.
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