Corrosion resistance of powder injection moulded titanium in physiologic serum and artificial saliva
Küçük Resim Yok
Tarih
2010
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Most of dental implants are made from titanium or titanium based alloys. How- ever, one of the drawback of such implants is high cost due to the technological di°culties in casting method or machining. In this work, powder injection moulding (PIM) method has been used in order to explore lower cost implants without min- imising the biocorrosion resistance of the titanium. Corrosion resistance of titanium specimens, produced by powder injection moulding method (PIM-Ti), in physiologic serum and artificial saliva was investigated. Commercially pure bulk Ti (CP-Ti) was used as control sample. Surface oxidation was also carried out to both PIM- Ti and CP-Ti samples. Microstructure and corrosion resistance were investigated using microhardness, X-ray diffraction (XRD), scanning electron microscopy (SEM) and potentiodynamic polarization experiments. Resulting microstructure of PIM-Ti samples contained porosity as compared to CP-Ti control samples. Microhardness of PIM-Ti samples varied with varying applied load whereas it was free from applied load for CP-Ti control samples. Polarisation measurements and SEM analysis re- vealed that corrosion behaviour of PIM-Ti was reasonably as good as CP-Ti both in as-produced and oxidized conditions in physiologic serum and artificial saliva in spite of its porous structure.
Açıklama
Anahtar Kelimeler
Corrosion, Oxidation, Powder injection moulding, Titanium
Kaynak
Acta Metallurgica Sinica (English Letters)
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
23
Sayı
3
