ZİRKONYA TAKVİYELİ HİDROKSİAPATİT (HA) BAZLI BİYOAKTİF HİBRİD KAPLAMALARIN KOROZYON DUYARLILIKLARI

Yıl 2017, Cilt: 12 Sayı: 1, 66 - 77, 10.01.2017

Burak Dikici , Mehmet Topuz , Serap Koç , Hakan Yılmazer Mitsuo Nıınomı Masaaki Nakaı

Öz

Titanyum (Ti) ve
alaşımları sahip oldukları düşük elastik modül, yüksek dayanım, iyi
biyouyumluluk ve korozyona karşı gelişmiş dirençleri nedeniyle implant
uygulamalarında en sık kullanılan metalik biyomalzemelerdir. Bu çalışmada;
ticari saflıktaki titanyum (CP Ti) altlıklar üzerine sol‐jel tekniği kullanılarak hidroksiapatit (HA: Ca₅(PO₄)₃(OH))
bazlı zirkonya (ZrO₂) katkılı biyoaktif hibrid kaplamalar ile
kaplanması ve bu kaplamaların in-vitro ortamlardaki elektrokimyasal korozyon
duyarlılıkları araştırılmıştır. Kaplamaların korozyon duyarlılıkları
potansiyodinamik polarizasyon (PDS) testleri ile belirlenmiştir.
Karakterizasyon çalışmalarında XRD, SEM ve EDS cihazları kullanılmıştır. Elde
edilen bulgular HA içerisine katılan ZrO₂ partiküllerinin implantın
yük taşıma kapasitelerini artırmakla birlikte kaplanmamış numunelere oranla
yüzey pasivizasyon özelliklerini iyileştirdiği görülmüştür.

Anahtar Kelimeler

CP Ti, Hidroksiapatit, In-vitro Test, Korozyon, Ringer Çözeltisi

Kaynakça

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