Product Code: ICAL06_1504

Plasma Spray Hydroxyapatite Coating on Laser Surface Nitrided Ti6Al4V Alloy
Authors:
Hau Chung Man, Hong Kong Polytechnic University; Hung Hom, Kowloon Hong Kong
Sen Yang, Hong Kong Polytechnic University; Hong Kong
Xuebin Zheng, Shanghai Institute of Ceramics; Peoples Republic of China
Presented at ICALEO 2006

To accelerate the bone growth around a metallic implant, a layer of bioactive ceramic such as hydroxyapatite (HA) can be applied as a coating on the metal implant. One of the critical factors for successful implantation is that the HA coating must have strong adherence to the metal substrate at the interface. Many coating techniques have been developed over the years for the coatings of HA but all of them have their limitations. Among these techniques, plasma spraying is the most widely used but the poor interfacial adherence and the inhomogeneous properties of the coatings do cause concern for its long term applications. To improve the interfacial adherence, researchers tried to roughen the metal surface by grit-blasting but the performance is still not satisfactory. Implant failure due to de-bonding of the plasma sprayed HA coating has been reported frequently. This paper will address the interfacial bonding problem between the HA coating/metal surface using a new laser surface modification technology. The technology will produce on the metal surface a TiN dendritic scaffold structure that would help anchor the HA coating and improve the interfacial adherence significantly.

Product Thumbnail

$28.00

Members: $28.00

Note: When applicable, multiple quantity discounts are applied once the items are added to your cart.