Publication detail

Analysis of NiCrAl powder doped by Fe and Si after high temperature exposure

SPOTZ, Z. ČELKO, L. ŠVEJCAR, J.

Original Title

Analysis of NiCrAl powder doped by Fe and Si after high temperature exposure

Type

journal article in Web of Science

Language

English

Original Abstract

In this work structural changes of NiCrAl doped by Fe and Si powder after annealing at high temperatures are observed. The material under study was annealed at 800, 1000 and 1200◦ C in an air atmosphere for 24 h and the structures obtained were compared with the asreceived state. Phase analyses were performed based on X-ray diffraction measurements. The lattice parameters of current phases were measured and quantitative analyses were carried out by the Rietveld refinement from the XRD patterns measured. The character and size of powder particles as well as their chemical composition were studied by SEM equipped with EDX. After exposure at 800◦ C for 24 h, the major part of whole material still in a primer solid solution formed, unlike after exposure at 1200◦ C whole volume of material transformed into oxides. The presence of different oxides was observed after heating at different temperatures with dominance of NiO. Change of lattice parameters of present phases was observed, what can be concluded as a dissolution effect. can be concluded as a dissolution effect.

Keywords

high-temperature oxidation; NiCrAl powder; phase transformation

Authors

SPOTZ, Z.; ČELKO, L.; ŠVEJCAR, J.

RIV year

2015

Released

1. 6. 2015

Publisher

Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava

Location

Bratislava

ISBN

0023-432X

Periodical

Kovové materiály

Year of study

53

Number

6

State

Slovak Republic

Pages from

459

Pages to

462

Pages count

4

URL

http://www.kovmat.sav.sk/issue.php?rr=53&cc=6

BibTex

@article{BUT123983,
  author="Zdeněk {Spotz} and Ladislav {Čelko} and Jiří {Švejcar}",
  title="Analysis of NiCrAl powder doped by Fe and Si after high temperature exposure",
  journal="Kovové materiály",
  year="2015",
  volume="53",
  number="6",
  pages="459--462",
  doi="10.4149/km\{_}2015\{_}6\{_}459",
  issn="0023-432X",
  url="http://www.kovmat.sav.sk/issue.php?rr=53&cc=6"
}