Analysis of potassium bubble inclusions in sintered tungsten wires

Adél Len, Péter Harmat, Gerard Pépy, L. Rosta, Peter Schade

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The tungsten wire used as incandescent coils in light sources requires extreme high-temperature creep resistance. After uniaxial thermomechanical treatment it fulfills these requirements. The heat treatment of the wires causes the spheroidisation of the elongated potassium filled bubbles with vanishing anisotropy in the small angle scattering patterns. The tungsten wires from different stages of the heat treatment were measured by small-angle neutron scattering (SANS). We have followed the morphology changes of the potassium bubble inclusions inside the tungsten matrix.

Original languageEnglish
Pages (from-to)621-623
Number of pages3
JournalJournal of Applied Crystallography
Volume36
Issue number3 I
DOIs
Publication statusPublished - 2003

Fingerprint

Tungsten
Small Angle Scattering
potassium
Potassium
tungsten
bubbles
wire
Wire
inclusions
heat treatment
Hot Temperature
Heat treatment
thermomechanical treatment
creep strength
Thermomechanical treatment
Creep resistance
Anisotropy
Neutrons
Neutron scattering
Light sources

Keywords

  • Anisotropic SANS
  • Sintered materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Structural Biology

Cite this

Analysis of potassium bubble inclusions in sintered tungsten wires. / Len, Adél; Harmat, Péter; Pépy, Gerard; Rosta, L.; Schade, Peter.

In: Journal of Applied Crystallography, Vol. 36, No. 3 I, 2003, p. 621-623.

Research output: Contribution to journalArticle

Len, Adél ; Harmat, Péter ; Pépy, Gerard ; Rosta, L. ; Schade, Peter. / Analysis of potassium bubble inclusions in sintered tungsten wires. In: Journal of Applied Crystallography. 2003 ; Vol. 36, No. 3 I. pp. 621-623.
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