Synthesis of boron-doped diamond/porous Ti composite materials — Effect of carbon concentration

Abstract

Highly boron-doped diamond films were deposited on porous titanium substrates by hot filament chemical vapor deposition technique. The morphology variation of highly boron-doped diamond films grown on porous titanium substrates was investigated, and the effects of carbon concentration on nucleation density and diamond growth were also studied. The continuous change of surface morphology and structure of diamond film were characterized by scanning electron microscopy. The structures of diamond film and interlayer were analyzed by X-ray diffraction. The quality of boron-doped diamond film was confirmed by visible Raman spectroscopy. The experimental results reveal that surface morphology and quality of boron-doped diamond films are various due to the change of carbon concentration. The thickness of intermediate layer decreases with the carbon concentration increasing.

Keywords

boron-doped / diamond film / porous titanium / carbon concentration

References

[1] Dai D., Zhou K., . Deposition Technology and Application of Diamond Films[M], 2001 Beijing Metallurgical Industry Press 1-7.

[2] Lü Fanxiu. New Research Directions in CVD Diamond Films and the Present Status and Future Trends in Commercialization[J]. Metal Thermal Treatment, 2008, 33(11): 1-5.

[3] Zhang R., Lee S. T., Lam Y. W. Characterization of Heavily Boron-doped Diamond Films[J]. Diamond and Related Materials, 1996, 5(11): 1288-1294.

[4] Beck F., Kaiser W., Krohn H. Boron Doped Diamond (BDD)-layers on Titanium Substrates as Electrodes in Applied Electrochemistry[J]. Electrochimica Acta, 2000, 45(28): 4 691-4 695.

[5] Yao X., Tang B., Fan A., . Structure and Corrosion Behaviours of Mo Modified Titanium in Saliva[J]. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2010, 25(4): 570-573.

[6] Askari S. J. Tribological Characteristics of Nanocrystalline Diamond Films Grown on Titanium[J]. Surface Engineering, 2009, 25(6): 482-486.

[7] Braga N. A., Cairo C. A. A., Almeida E. C., . Temperature Influence on the Interlayer and Surface Morphology of Diamond Coating on 3D Porous Titanium Substrates[J]. Diamond and Related Materials, 2009, 18: 1 065-1 069.

[8] Gerger I., Haubner R. Gradient Layers of Boron-doped Diamond on Titanium Substrates[J]. Diamond and Related Materials, 2007, 16: 899-904.

[9] Popov C., Bliznakov S., Kulisch W. Influence of the Substrate Nature on the Properties of Nanocrystalline Diamond Films[J]. Diamond and Related Materials, 2007, 16: 740-743.

[10] Kulesza S., Patyk J. K., Daenen M., . Structural Investigation of Protective Polycrystalline Diamond Coatings on Titanium Substrates [J]. Surface and Coating Technology, 2006, 201: 203-207.

[11] Yang Z.-j., Li H.-z., Lin F., . Investigations on Raman and XPS Spectrum of High-temperature and High-pressure Synthetic Diamond[J]. Superhard Material Engineering, 2007, 19(2): 1-5.

[12] Askari S. J., Chen G. C., Lu F. X. Growth of Polycrystalline and Nanocrystalline Diamond Films on Pure Titanium by Microwave Plasma Assisted CVD Process [J]. Material Research Bulletin, 2008, 43: 1 086-1 090.