A series of carbonyl metal complexes with anions of functional «-amino acids has been pre­ pared: [M(CO),(L-histidinate)]' (M = Cr, Mo, W), M(CO),(L-histidinate) (M = Mn, Re), [Re(CO)3(NO)(L-histidinate)] + PF6-, M(CO)2(//3-allyl)(L-histidinate) (M = Mo, W), Mo(CO)2(NO)(L-histidinate), [Mo(CO)(NO)(^3-methalIyl)(L-histidinate)]PF6, Mo(CO)2(/73-methallyl)(L-histidineOMe)Cl, [M(CO)3(cysteinate)]2~...

Co-Cr and Co-Cr/nano-TiO2 coatings were electrodeposited from Cr(III) based baths. The effect of TiO2 nano-particles incorporation on the morphology, structure, crystallite size, and preferred orientation was studied. Corrosion behavior of the composite coating was also investigated by means of polarization and electrochemical impedance spectroscopy techniques in Hanks’ si...

Nickel-chromium (Ni-Cr) alloys used in fixed prosthodontics have been associated with type IV Ni-induced hypersensitivity. We hypothesised that the full-thickness human-derived oral mucosa model employed for biocompatibility testing of base-metal dental alloys would provide insights into the mechanisms of Ni-induced toxicity. Primary oral keratinocytes and gingival fibroblasts were seeded onto ...

The ASTM F-75 (Co-28%Cr-6%Mo) is widely used as a biocompatible alloy in medicinefor manufacturing implants. In this study, effect of mold preheating on the as-cast microstructure of thealloy was investigated using the solid investment casting process. Several mold preheating temperaturesof 550, 700, 850 and 1000 °C were selected at the same melt superheat. The samples were characterizedby opti...

Bending property of Ti-Ni alloy dental castings was evaluated in comparison with that of Co-Cr alloy in a cantilever test. Heat treatment effect on the bending property was also investigated in relation to phase transformation. Ti-50.85Ni (mol%) alloy was used, and the shape of bending test specimens was half-rounded in cross section, 2.0mm in diameter. The bending test was carried out at 310K....