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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
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" }