TY - JOUR
T1 - Structural evolution and growth mechanisms of RF-magnetron sputter-deposited hydroxyapatite thin films on the basis of unified principles
AU - Ivanova, Anna A.
AU - Surmeneva, Maria A.
AU - Surmenev, Roman A.
AU - Depla, Diederik
PY - 2017/12/15
Y1 - 2017/12/15
N2 - The structural features of RF-magnetron sputter-deposited hydroxyapatite (HA) coatings are investigated in order to reveal the effect of the working gas composition and the sample position of the substrate relative to the target erosion zone. The film properties were observed to change as a result of bombardment with energetic ions. XRD analysis of the coated substrates indicates that with the increase of the ion-to-atom ratio, the fiber texture changes from a mixed (112¯2)+(0002)over (0002) orientation, finally reaching a (303¯0) out-of-plane orientation at high ion-to-atom ratios. TEM reveals that the microstructure of the HA coating consists of columnar grains and differs with the coating texture. The contribution of Ji/Ja to the development of microstructure and texture of the HA coating is schematically represented and discussed. The obtained results may contribute substantially to the progress of research into the development of HA coatings with tailored properties, and these coatings may be applied on the surfaces of metal implants used in bone surgery.
AB - The structural features of RF-magnetron sputter-deposited hydroxyapatite (HA) coatings are investigated in order to reveal the effect of the working gas composition and the sample position of the substrate relative to the target erosion zone. The film properties were observed to change as a result of bombardment with energetic ions. XRD analysis of the coated substrates indicates that with the increase of the ion-to-atom ratio, the fiber texture changes from a mixed (112¯2)+(0002)over (0002) orientation, finally reaching a (303¯0) out-of-plane orientation at high ion-to-atom ratios. TEM reveals that the microstructure of the HA coating consists of columnar grains and differs with the coating texture. The contribution of Ji/Ja to the development of microstructure and texture of the HA coating is schematically represented and discussed. The obtained results may contribute substantially to the progress of research into the development of HA coatings with tailored properties, and these coatings may be applied on the surfaces of metal implants used in bone surgery.
KW - Magnetron
KW - Microstructure
KW - Monte Carlo simulations
KW - Nanocrystalline film
KW - Texture
UR - http://www.scopus.com/inward/record.url?scp=85024089344&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024089344&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2017.07.039
DO - 10.1016/j.apsusc.2017.07.039
M3 - Article
AN - SCOPUS:85024089344
VL - 425
SP - 497
EP - 506
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -