Publication detail

Analysis of surface defects of aluminium components with hard anodized layers

KLAKURKOVÁ, L. JULIŠ, M. ČELKO, L. HORYNOVÁ, M. HÉGR, E. ŠVEJCAR, J.

Original Title

Analysis of surface defects of aluminium components with hard anodized layers

Type

journal article in Web of Science

Language

English

Original Abstract

Final quality inspection regularly reveals surface defects on components after hard anodizing. The aim of the analysis was to identify the cause of the defects and unambiguously determine whether the defect is caused by the quality of the base material, manufacturing technology of the component, the heat treatment or by the final surface treatment technology (anodizing). Analysis of the chemical composition and hardness measurements were performed to eliminate the possibility of any errors during material selection and heat treatment process. The capillary test revealed two major defects and also small amount of minor defects. To determine cause of the defects, light and scanning electron microscopy including EDS chemical microanalysis was used. Detailed study of the major defect and EDS microanalysis of its interior confirmed existence of defect prior to coating formation. Further examination of the major defect and its surroundings led to conclusion, that the defect was formed during primary foundry processes when billet was manufactured.

Keywords

Failure analysis; Hard anodizing; Rolling defects; Metallurgical investigation; Metallography

Authors

KLAKURKOVÁ, L.; JULIŠ, M.; ČELKO, L.; HORYNOVÁ, M.; HÉGR, E.; ŠVEJCAR, J.

RIV year

2015

Released

1. 10. 2015

Publisher

Elsevier

Location

Elsevier

ISBN

1350-6307

Periodical

ENGINEERING FAILURE ANALYSIS

Year of study

56

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

300

Pages to

306

Pages count

7

URL

http://dx.doi.org/10.1016/j.engfailanal.2015.01.013

BibTex

@article{BUT116567,
  author="Lenka {Klakurková} and Martin {Juliš} and Ladislav {Čelko} and Miroslava {Horynová} and Eduard {Hégr} and Jiří {Švejcar}",
  title="Analysis of surface defects of aluminium components with hard anodized layers",
  journal="ENGINEERING FAILURE ANALYSIS",
  year="2015",
  volume="56",
  number="1",
  pages="300--306",
  doi="10.1016/j.engfailanal.2015.01.013",
  issn="1350-6307",
  url="http://dx.doi.org/10.1016/j.engfailanal.2015.01.013"
}