Electrochemical Deposition of Hydroxyapatite Coatings on CoCrMo Alloy

Abstract

Hydroxyapatite (HA) is widely applied as bone graft material due to its osteoconductive potential and well-established biocompatibility. The high osteoconductive potential of the HA coating provides a potential structure for use as bone substitute in orthopedic, oral, and cranio-maxillofacial reconstructive surgery, and as dento-alveolar implants. The aim of this work is to present hydroxyapatite coatings which were prepared on CoCrMo as-cast alloy by electrochemical deposition technology in the mixed solution Ca(NO 3 ) 2 ·4H 2 O and NH 4 H 2 PO 4 . CoCrMo alloy complies with the ISO 5832-4 standard and is widely used in the manufacturing of orthopedic implants because of its high strength, good corrosion resistance and excellent biocompatibility properties. HA coating is used to ensure sufficient bioactivity, but application of hydroxyapatite in orthopedic implants suffers from its low fracture toughness and poor wear resistance. Carbon nanotube (CNT), with its high stiffness and mechanical strength, is an attractive reinforcement for HA to surmount these issues.

CoCrMo Alaşımının Toz Katkılı Elektrik Deşarj ile İşlenmesinde Malzeme Kaldırma ve Takım Aşınma Hızının Cevap Yüzeyi Modellemesi

“…This alloy is chosen for its compatibility with bone and other tissues, biocompatibility, and mechanical durability. Furthermore, CoCrMo alloy is suitable for use in corrosive environments such as bodily fluids due to its high corrosion resistance (Jakobsen et al, 2010;Onderka et al, 2014;Bahçe et al, 2019).…”