Alkali-heat treatment of ti-6al-4v to hydroxyapatite coating using electrophoretic method

Sugeng Supriadi, Sri Lubriandini Putri, Rizkijanuar Ramadhan, Bambang Suharno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The deposition of hydroxyapatite has been applied to enhance the bioactivity of Ti-6Al-4V as implant materials. However, the hydroxyapatite has poor adhesion strength to a substrate which can lead to coating delamination. In this study, we combine the alkali-heat treatment of Ti-6Al-4V and the electrophoretic coating process of the hydroxyapatite to obtain the strong mechanical interlocking. The Ti-6Al-4V implants were etched in Kroll solution before the alkali-treatment was performed using 5M and 10M NaOH at 24, 48 and 72 hours and thermally stabilized at 600o C and 800o C for 1 hour using a stepwise heating rate of 5o C per min. The electrophoretic deposition process conducted at a constant cell voltage of 20 V for 10 min at room temperature and then sintered in a vacuum furnace at 800o C. The result shows that the feather-like structure on Ti-6Al-4V surface was created by incorporating sodium ions onto the Ti-6Al-4V surface during alkali-treatment using NaOH 5M for 48h and stabilized using heat treatment at 600o C where the hydroxyapatite filled the interspaces to become integrated with the feather-like structure so that the osseointegration can occur as the bioactivity increased.

Original languageEnglish
Title of host publicationEngineering and Innovative Materials VIII
EditorsMuhammad Yahaya, Herng-Chia Hsieh
PublisherTrans Tech Publications Ltd
Pages175-180
Number of pages6
ISBN (Print)9783035716054
DOIs
Publication statusPublished - 1 Jan 2020
Event8th International Conference on Engineering and Innovative Materials, ICEIM 2019 - Tokyo, Japan
Duration: 6 Sep 20198 Sep 2019

Publication series

NameKey Engineering Materials
Volume846 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference8th International Conference on Engineering and Innovative Materials, ICEIM 2019
CountryJapan
CityTokyo
Period6/09/198/09/19

Keywords

  • Alkali-Heat Treatment
  • Mechanical Interlocking
  • Osseointegration

Fingerprint Dive into the research topics of 'Alkali-heat treatment of ti-6al-4v to hydroxyapatite coating using electrophoretic method'. Together they form a unique fingerprint.

Cite this