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/Title ({Cracking caused by cutting of plasma-sprayed hydroxyapatite coatings and its relation to the structural features of coatings deposited at different initial substrate temperatures})
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/bibtex#2Furl (http://www.doiserbia.nb.rs/Article.aspx?ID=0367-598X1600034G)
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2017-07-26T21:52:03+02:00
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2017-06
Bojan Gligorijevic
Miroljub Vilotijevic
Maja Scepanovic
Radovan Radovanovic
Nenad Radovic
The present study estimated the cracking phenomenon in as-plasma-sprayed hydroxylapatite coatings (HACs) after they were being subjected to the severe cutting conditions in the direction perpendicular to the coating/substrate interface. In order to evaluate the effects of substrate preheating on the occurrence of micro-cracks, the HACs were deposited at different initial substrate temperatures ( T S = 20, 100 and 200 °C). The changes in phase composition and HA splat morphology with T S were observed and were correlated with the cracking occurrence. The results showed that severe cutting conditions introduced a localized cracking in the regions of HACs dominantly attributed to the brittle hydroxyl-deficient amorphous calcium phosphate (ACP) phase. This effect was particularly observable in the HACs deposited without preheating of substrate. On the other hand, the preheating of substrate reduced the presence of micro-cracks and caused insignificant changes in the average local phase composition. In HACs deposited with preheating of substrate, the HA splats (of which HACs are composed) were thinner and recrystallized HA regions seemed smaller in size and more evenly distributed. These results implied potentially important roles of the HA splat formation mechanism on the distribution of ACP and recrystallized HA regions in the as-plasma-sprayed HACs and the cracking resistance of HACs.
{Cracking caused by cutting of plasma-sprayed hydroxyapatite coatings and its relation to the structural features of coatings deposited at different initial substrate temperatures}
bibtex/url/http://www.doiserbia.nb.rs/Article.aspx?ID=0367-598X1600034G
bibtex/volume/71
bibtex/number/03
bibtex/file/:C$backslash$:;:D\:\\HTTPD\\Dropbox\\HI\\No3\\HemInd_2017_No3_www\\HEMIND_Vol71_No3_241-249_May-Jun_2017.pdf:PDF
bibtex/journal/Hemijska industrija
bibtex/pages/241--249
bibtex/bibtexkey/Gligorijevic2017
10.2298/HEMIND160513034G
application/pdf
Article
Bojan Gligorijevic
Miroljub Vilotijevic
Maja Scepanovic
Radovan Radovanovic
Nenad Radovic
Gligorijevic2017
10.2298/HEMIND160513034G
:C$backslash$:;:D\:\\HTTPD\\Dropbox\\HI\\No3\\HemInd_2017_No3_www\\HEMIND_Vol71_No3_241-249_May-Jun_2017.pdf:PDF
Hemijska industrija
jun
03
241--249
{Cracking caused by cutting of plasma-sprayed hydroxyapatite coatings and its relation to the structural features of coatings deposited at different initial substrate temperatures}
http://www.doiserbia.nb.rs/Article.aspx?ID=0367-598X1600034G
71
2017
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