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Surface modification of titanium through amino group implantation
1Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear Energy Technology, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, PRChina. yangyz@tsinghua.edu.cn
Journal of Biomedical Materials Research
|March 20, 2001
Summary
Amino group implantation modified titanium (Ti) surfaces, forming a titanium nitride (TiN) layer. Contamination resulted in a hydrocarbon overlayer, while the oxide layer thickened. This study details the surface modification process and characterization.
Area of Science:
- Materials Science
- Surface Chemistry
- Nanotechnology
Background:
- Titanium (Ti) is a widely used biomaterial, but its surface properties can be modified to enhance performance.
- Surface functionalization aims to improve biocompatibility, corrosion resistance, and mechanical properties.
- Amino group implantation offers a method to alter Ti surface chemistry.
Purpose of the Study:
- To investigate the effects of amino (NH(2+)) group implantation on titanium surfaces.
- To characterize the resulting surface modifications using various analytical techniques.
- To determine the formation of titanium nitride (TiN) and other surface changes.
Main Methods:
- Modification of Ti surfaces via amino group implantation at two different doses (10^16 and 10^17 cm^-2).
- Surface characterization using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning Auger electron spectroscopy (AES), and secondary ion mass spectroscopy (SIMS).
- Analysis of depth profiles to understand elemental distribution and compound formation.
Main Results:
- Implanted Ti surfaces exhibited a dominant hydrocarbon overlayer due to contamination.
- The surface oxide layer on implanted Ti specimens became thicker.
- XPS, AES, and SIMS confirmed a typical ion implantation distribution of elements and the formation of titanium nitride (TiN).
Conclusions:
- Amino group implantation is a viable method for modifying Ti surfaces.
- Surface contamination and oxide layer thickening are significant outcomes of the process.
- The formation of titanium nitride (TiN) indicates a chemical transformation of the Ti surface.