Dip Coating of Nano Hydroxyapatite on Titanium Alloy with Plasma Assisted γ-Alumina Buffer Layer: A Novel Coating Approach

Structure and shear strength of implants with plasma coatings

“…The carry ing load can be increased even more owing to the better joint of ceramic with bone during the deposition of HA on the surface of the titanium coating. However, mechanical properties of the ceramic HA coating decay rapidly with the increase in porosity; it becomes too brittle and cannot be used for the transfer of the stress from bone to implant [34].…”

Nitride, Zirconia, Alumina, and Carbide Coatings on Ti6Al4V Femoral Heads: Effect of Deposition Techniques on Mechanical and Tribological Properties

“…Table shows that the CTE of alumina and Ti6Al4V are 8.3 × 10 −6 and 8.5 × 10 −6 K −1 , respectively. Such similar CTE values may lead to strong adhesion between the Ti6Al4V substrate and the alumina coating . Other essential properties of the implant coating include biocompatibility, biostability, and chemical resistance …”

“…Bioinert ceramic coatings have predominantly been studied for enhancing hardness, wear, and corrosion resistance of hip joints . Some of the most commonly studied bioinert ceramics for coating femoral heads are nitrides, carbides, alumina, and zirconia because of their high strength, hardness, toughness, wear and corrosion resistance, and low coefficient of friction …”

“…Moreover, incompatibility between the Young's modulus of the implant and the coating layer may lead to delamination of the coating due to strain development in the interface . The similarity in coefficients of thermal expansion (CTE) of the deposited material and the substrate is also important to obtain a coating with good adhesive strength . Table shows thermal expansion coefficients of bioinert ceramic coatings …”

Electrochemical and biological characterization HA/Al2O3‐YSZ nano‐composite coatings using electrophoretic process

“…Among different Caps, HA [Ca 10 (PO 4 ) 6 (OH) 2 ] is widely used due to its osseous nature and suitability to strong bonding with host bone tissues . Different coating methods have been utilized such as plasma spraying, dip coating, hot isostatic pressing, ion beam‐assisted deposition, pulsed laser deposition, sol–gel technique and electrophoretic deposition (EPD) . Among of these methods, EPD has several benefits such as better control thickness and morphology of the coating, components with complex shapes are deposited uniform, higher deposition rate than other coating technics and cheap equipment required …”