Effect of HAP decomposition on the corrosion behavior of Ti-HAP biocomposites

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Toptan, F (Author) Other; Alves, AC (Author) Other; Ferreira, MA (Author) Other; Oliveira, CID (Author) Other; Pinto, AMP (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION

Vol. 69

Pages: 1292-1299

ISSN: 0947-5117

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Other information

Authenticus ID: P-00P-JME

DOI: 10.1002/maco.201810049

Abstract (EN): Ti-HAP biocomposites are gained attention for combining the attractive properties of Ti and hydroxyapatite (HAP). However, the decomposition of HAP at elevated processing temperatures is a major concern since it can lead to structural flaws and may deteriorate the corrosion resistance of Ti. The present study aims to investigate the corrosion behavior of Ti-HAP composite processed by powder metallurgy by performing potentiodynamic polarization and electrochemical impedance spectroscopy in 0.9wt% NaCl solution at body temperature. Results show that the presence of Ti lowers the HAP decomposition temperatures resulting in the formation of HAP-depleted zones acting as electrochemically active sites, decreasing the corrosion resistance.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8