Detail publikace

The effect of heat-treatment on properties of Ni-P coatings deposited on AZ91 magnesium alloy

BUCHTÍK, M. KRYSTÝNOVÁ, M. MÁSILKO, J. WASSERBAUER, J.

Originální název

The effect of heat-treatment on properties of Ni-P coatings deposited on AZ91 magnesium alloy

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The present study reports the effect of phosphorus content in deposited electroless nickel (Ni–P) coatings, the heat treatment on the microhardness and its microstructural characteristics, and the influence of the temperature on the microstructure of the Mg alloy substrate during the heat treatment. The deposition of Ni–P coatings was carried out in the electroless nickel bath, and the resulting P content ranged from 5.2 to 10.8 wt.%. Prepared samples were heat-treated in the muffle furnace at 400 °C for 1 h after the coating deposition. The cooling of the samples to room temperature was proceeded in the air. For as-deposited and heat-treated samples, it was determined that with the increasing P content, the microhardness was decreasing. This may be caused by the changes in the structure of the Ni–P coating. The X-ray diffraction patterns of the as-deposited Ni–P coatings showed that the microstructure changed their nature from crystalline to amorphous with the increasing P content. The heat treatment of prepared samples led to the significant increase of microhardness of Ni–P coatings. All the heat-treated samples showed the crystalline character, regardless of the P content and the presence of hard Ni3P phase, which can have a positive effect on the increase of microhardness. The metallographic analysis showed changes of substrate microstructure after the heat treatment. The prepared coatings were uniform and with no visible defects

Klíčová slova

Ni–P coatings; Ni3P phase; Mg alloys; AZ91; heat treatment; microhardness; crystallite size

Autoři

BUCHTÍK, M.; KRYSTÝNOVÁ, M.; MÁSILKO, J.; WASSERBAUER, J.

Vydáno

23. 7. 2019

Nakladatel

MDPI

Místo

Basel, Switzerland

ISSN

2079-6412

Periodikum

Coatings, MDPI

Ročník

9

Číslo

7

Stát

Švýcarská konfederace

Strany od

1

Strany do

9

Strany počet

9

URL

https://www.mdpi.com/2079-6412/9/7/461

Plný text v Digitální knihovně

http://hdl.handle.net/11012/180810

BibTex

@article{BUT157793,
  author="Martin {Buchtík} and Michaela {Hasoňová} and Jiří {Másilko} and Jaromír {Wasserbauer}",
  title="The effect of heat-treatment on properties of Ni-P coatings
deposited on AZ91 magnesium alloy
",
  journal="Coatings, MDPI",
  year="2019",
  volume="9",
  number="7",
  pages="1--9",
  doi="10.3390/coatings9070461",
  issn="2079-6412",
  url="https://www.mdpi.com/2079-6412/9/7/461"
}