Study on effect of plasma surface treatments for diamond deposition by DC arc plasmatron.
To improve the thermal conductivity and wear resistance of ceramic materials in the field of renewable energy technologies, diamond coating by plasma processing has been carried out in recent years. This study's goal is to improve diamond deposition on Al2O3 ceramic substrates by plasma surface treatments. Before diamond deposition was carried out in a vacuum, plasma surface treatments using Ar gas were conducted to improve conditions for deposition. We also conducted plasma processing for diamond deposition on Al2O3 ceramic substrates using a DC arc Plasmatron. The Al2O3 ceramic substrates with diamond film (5 x 15 mm2), were investigated by SEM (Scanning Electron Microscopy), AFM (Atomic Force Microscopy) and XRD (X-ray Diffractometer). Then, the C-H stretching of synthetic diamond films by FTIR (Fourier Transform Infrared Spectroscopy) was studied. We identified nanocrystalline diamond films on the Al2O3 ceramic substrates. The results showed us that the deposition rate of diamond films was 2.3 microm/h after plasma surface treatments. Comparing the above result with untreated ceramic substrates, the deposition rate improved with the surface roughness of the deposited diamond films.
Department of Nuclear and Energy Engineering, Jeju National University, Jeju 690-756, Republic of Korea.
In-Je
IJ
Kang
Sang-Beom
SB
Joa
Heon-Ju
HJ
Lee
D000537:Aluminum Oxide / Q000737:chemistry*; D003460:Crystallization / Q000295:instrumentation; D018130:Diamond / Q000737:chemistry*; D004595:Electroplating / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006361:Heating / Q000295:instrumentation*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000295:instrumentation; D010316:Particle Size; D058626:Plasma Gases / Q000737:chemistry*; D013499:Surface Properties
D046911:Macromolecular Substances; D058626:Plasma Gases; D018130:Diamond; D000537:Aluminum Oxide