Abstract
Variation of surface potential of the NaOH- and heat-treated titanium metal with soaking in SBF was investigated using a laser electrophoresis zeta-potential analyzer. It was found that the surface potential of the titanium metal was negatively charged after soaking in SBF for 0.5 h, increased with increasing soaking time up to 36 h and then decreased. The negative charge of the metal at soaking time of 0.5 h is attributed to Ti-OH groups on the surface. The initial increase in the surface potential was attributed to the incorporation of positively charged calcium ions to form a calcium titanate, and the subsequent decrease was attributed to the incorporation of negatively charged phosphate ions to form an amorphous calcium phosphate, which eventually transformed into apatite.
| Original language | English |
|---|---|
| Pages (from-to) | 641-644 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 218-220 |
| Publication status | Published - 2002 Jan 1 |
| Event | 14th International Symposium on Ceramics in Medicine-Annual Meeting of the International Society for Ceramics in Medicine BIOCERAMICS'01 (ISCM) - Palm Springs, CA, United States Duration: 2001 Nov 14 → 2001 Nov 17 |
Keywords
- Apatite
- Simulated body fluid (SBF)
- Titanium
- Zeta potential
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering