Publication detail

Microstructure Development and Phlase Evolutin of Nickel Coated Aluminium and Hydronalium Substrates

ČELKO, L. KLAKURKOVÁ, L. JECH, D. JULIŠ, M. SLÁMEČKA, K. ŠVEJCAR, J.

Original Title

Microstructure Development and Phlase Evolutin of Nickel Coated Aluminium and Hydronalium Substrates

Type

conference paper

Language

English

Original Abstract

In this work, the microstructural changes of nickel coated aluminium and hydronalium substrates were investigated after the heat treatment above the melting point of pure aluminium. The 99.0Ni powder was used to produce the coating using high velocity oxyfuel spraying on 5 mm thick 99.5Al and AlMg3 sheets surface. As-sprayed samples were annealed in the temperature range of 660 - 800°C in ambient atmosphere. The dwell time for isothermal exposure was set from several minutes up to several hours depending on used temperature. Resulting microstructures were investigated by means of metallography and light and scanning electron microscopy techniques. Employed heat treatment allowed to form two different (binary and ternary) hypereutectic alloys. The main differences resulted from different initial substrate microstructures and chemical composition. Compare to pure aluminium substrate microstructure, hydronalium alloy contained a number of nucleation sites in the form of eutectic and/or intermetallic phases and also, probably due to the higher diffusion mobility of aluminium, exhibited the faster dissolution of as-sprayed nickel coating region.

Keywords

Aluminium; Hydronalium; Thermal Spraying; Heat Treatment; Electron Microscopy - Scanning

Authors

ČELKO, L.; KLAKURKOVÁ, L.; JECH, D.; JULIŠ, M.; SLÁMEČKA, K.; ŠVEJCAR, J.

RIV year

2014

Released

23. 5. 2014

Publisher

TANGER Ltd.

Location

Ostrava

ISBN

978-80-87294-54-3

Book

Metal 2014 Conference Prosceedings

Edition

1

Pages from

915

Pages to

920

Pages count

6

BibTex

@inproceedings{BUT116616,
  author="Ladislav {Čelko} and Lenka {Klakurková} and David {Jech} and Martin {Juliš} and Karel {Slámečka} and Jiří {Švejcar}",
  title="Microstructure Development and Phlase Evolutin of Nickel Coated Aluminium and Hydronalium Substrates",
  booktitle="Metal 2014 Conference Prosceedings",
  year="2014",
  series="1",
  pages="915--920",
  publisher="TANGER Ltd.",
  address="Ostrava",
  isbn="978-80-87294-54-3"
}