Detail publikačního výsledku

Failure Mechanism and Mechanical Characteristics of NiCrBSi Coating

BUCHTÍK, M.; BŘEZINA, M.; WASSERBAUER, J.; VYKLICKÝ, O.; FILIPENSKÝ, J.

Original Title

Failure Mechanism and Mechanical Characteristics of NiCrBSi Coating

English Title

Failure Mechanism and Mechanical Characteristics of NiCrBSi Coating

Type

Scopus Article

Original Abstract

Mechanical properties of NiCrBSi coatings on plain carbon steel substrate prepared by HVOF (High velocity flame spraying) were studied in this work. Sprayed coatings with average thicknesses of 0.25 mm, 0.5 mm and 1 mm were prepared on preheated steel strips and steel strips without preheating. Chemical analysis of the coatings cross‑section offered information about material structure and distribution of chemical elements within the coating. Hardness of the coating was measured with the aim to reveal the influence of coating thickness and coated substrate preheating on coating hardness. Similar hardness was observed regardless coating preparation conditions and thickness. Bend test was used for characterization of failure character of NiCrBSi thermally sprayed coatings under different thermal conditions. Higher coating thickness was beside cracking, accompanied also by coating delamination from the substrate, while also some influence of testing temperature (laboratory temperature vs. ‑50 °C) on coating failure characteristics were observed. No influence of the coating preparation conditions on the coating pull‑off strength was observed.

English abstract

Mechanical properties of NiCrBSi coatings on plain carbon steel substrate prepared by HVOF (High velocity flame spraying) were studied in this work. Sprayed coatings with average thicknesses of 0.25 mm, 0.5 mm and 1 mm were prepared on preheated steel strips and steel strips without preheating. Chemical analysis of the coatings cross‑section offered information about material structure and distribution of chemical elements within the coating. Hardness of the coating was measured with the aim to reveal the influence of coating thickness and coated substrate preheating on coating hardness. Similar hardness was observed regardless coating preparation conditions and thickness. Bend test was used for characterization of failure character of NiCrBSi thermally sprayed coatings under different thermal conditions. Higher coating thickness was beside cracking, accompanied also by coating delamination from the substrate, while also some influence of testing temperature (laboratory temperature vs. ‑50 °C) on coating failure characteristics were observed. No influence of the coating preparation conditions on the coating pull‑off strength was observed.

Keywords

thermal spraying; NiCrBSi coating; bend test; coating failure mechanism; cracks to centimetre ratio; microstructure; HVOF

Key words in English

thermal spraying; NiCrBSi coating; bend test; coating failure mechanism; cracks to centimetre ratio; microstructure; HVOF

Authors

BUCHTÍK, M.; BŘEZINA, M.; WASSERBAUER, J.; VYKLICKÝ, O.; FILIPENSKÝ, J.

RIV year

2020

Released

09.04.2019

Publisher

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Location

Brno

ISBN

1211-8516

Periodical

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

Volume

67

Number

3

State

Czech Republic

Pages from

649

Pages to

657

Pages count

9

URL

https://acta.mendelu.cz/67/3/0649/

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT157794,
  author="Martin {Buchtík} and Matěj {Březina} and Jaromír {Wasserbauer} and Ondřej {Vyklický} and Jan {Filipenský}",
  title="Failure Mechanism and Mechanical Characteristics of NiCrBSi Coating",
  journal="Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis",
  year="2019",
  volume="67",
  number="3",
  pages="649--657",
  doi="10.11118/actaun201967030649",
  issn="1211-8516",
  url="https://acta.mendelu.cz/67/3/0649/"
}