Development of HVOF Coating of Hydroxy Apatite on Titanium Alloy with Carbon Nano Tube Intermediate Layer

Abstract:

Hydroxyapatite (HA) is considered as convenient material for the coating of titanium alloy in implant aplication. With the purpose to improve the morphology structure of HAP coating, the present research concerns in studying the effect of carbon nanotube (CNT) intermediate layer on HAP coated of titanium alloy. From SEM characterization, it can be observed that both of HAP coated sample, with and without CNT intermediate layer have porous nodular structure a characteristic of thermal spray coating without any micro-crack. However finer and more irregular structure observed on the sample with CNT intermediate layer, which is confirmed from XRD characterization, that lower degree of crystallinity occur on sample with CNT intermediate layer. After the coating, both of the samples were post annealed at 600 and 700°C for one hour. It was observed that micro-crack observed on the sample without CNT intermediate layer after post annealed at 700°C, while the rest of both samples observed without micro-crack.

• Periodical: Applied Mechanics and Materials (Volume 660)
• Pages: 937-941
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.660.937
• Online since: October 2014
• Authors: Raden Dadan Ramdan, Budi Prawara, Rochim Suratman, Irfandie Adi Pradana, Ali Rinaldi
• Keywords: CNT Intermediate Layer, HAP Coating, Titanium Alloy

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