Title of article :
Fabrication of Ti–O/Ti–N duplex coatings on biomedical titanium alloys by metal plasma immersion ion implantation and reactive plasma nitriding/oxidation
Author/Authors :
Leng، نويسنده , , Y.X. and Yang، نويسنده , , P. and Chen، نويسنده , , J.Y. and Sun، نويسنده , , H. and Wang، نويسنده , , J. and Wang، نويسنده , , G.J. and Huang، نويسنده , , N. and Tian، نويسنده , , X.B. and Chu، نويسنده , , P.K.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
Ti–O/Ti–N duplex coatings were fabricated on titanium alloys by metal plasma immersion ion implantation and reactive plasma nitriding/oxidation. The purpose of Ti–O is to improve the blood compatibility, and that of Ti–N is to improve the mechanical properties. X-Ray diffraction (XRD), microhardness tests, pin-on-disk wear experiments, and platelet adhesion investigation were conducted to evaluate the properties and blood compatibility of the coatings. The results reveal that the blood compatibility of the Ti–O/Ti–N duplex coatings is better than that of low temperature isotropic pyrolytic carbon (LTIC). The microhardness of Ti–O/Ti–N duplex coatings can reach 14 GPa. The wear resistance is also much better than that of Ti6Al4V alloy. The semiconductor nature of non-stoichiometric titanium oxide may be responsible for the observed improvement in the blood compatibility.
Keywords :
Titanium oxide and nitride , Biomedical materials , Plasma implantation , Plasma oxidation , PLASMA NITRIDING
Journal title :
Surface and Coatings Technology
Journal title :
Surface and Coatings Technology
