Sanjay Kumar Sinha
BIT Mesra, India
Title: Physiochemical, biological and mechanical effects of energetic inert ions on HAP/alumina for orthopeadic implants: A review
Biography
Biography: Sanjay Kumar Sinha
Abstract
Hydrixyapatite, abbreviated as HAP or HAp is an important material for orthopedic implants. However due to its weak mechanical strength, thin film of HAP is coated on metallic biomaterials like TiAlV alloy or SS. We propose to coat it on lighter weighted ceramic material alumina. HAP is prepared using sol-gel technique and deposited using dip coating process. Further this sample is implanted with inert ions like Ar to increase the adhesion. Ions energy is chosen such that maximum collisional energy is deposited at the interface of HAP and alumina (HAP/Al2O3). Ions are implanted with different ion doses. Functional groups of HAP were studied by FTIR and compound formation was studied by GXRD technique. Physical properties like variation in nanohardness, adhesion of the film and chemical properties like corrosion in Ringer solution before and after treatment will be discussed. Biological properties like variation in wettability, thrombogenicity and toxicity will be discussed. Scratch test is carried out to check the improvement in adhesion with respect to ion dose. Changes in surface morphology studied using SEM and AFM will also be discussed.