Hot filament CVD diamond coating of TiC sliders

2007 ◽  
Vol 16 (3) ◽  
pp. 609-615 ◽  
Author(s):  
S. Konoplyuk ◽  
T. Abe ◽  
T. Takagi ◽  
T. Uchimoto
Keyword(s):  
Cvd Diamond ◽  
Diamond Coating ◽  
Hot Filament Cvd ◽  
Cvd Diamond Coating ◽  
Hot Filament

Water assisted pulsed laser machining of micro-structured surface on CVD diamond coating tools

2020 ◽  
Vol 56 ◽  
pp. 591-601 ◽  
Author(s):  
Bing Guo ◽  
Jun Zhang ◽  
Mingtao Wu ◽  
Qingliang Zhao ◽  
Han Liu ◽  
...  
Keyword(s):  
Pulsed Laser ◽  
Cvd Diamond ◽  
Laser Machining ◽  
Diamond Coating ◽  
Structured Surface ◽  
Cvd Diamond Coating

Nondestructive Evaluation of a CVD Diamond Coating Various Deposition Conditions

2010 ◽  
Vol 60 (2) ◽  
pp. 195-200
Author(s):  
Dong-Yeol KIM ◽  
Hak-Joon KIM ◽  
Sung-Jin SONG ◽  
Toshiyuki TAKAGI ◽  
Tetsuya UCHIMOTO ◽  
...  
Keyword(s):  
Nondestructive Evaluation ◽  
Cvd Diamond ◽  
Diamond Coating ◽  
Cvd Diamond Coating ◽  
Deposition Conditions

Surface polishing of CVD diamond coating by femtosecond laser

2019 ◽  
Vol 27 (1) ◽  
pp. 164-171
Author(s):  
马玉平 MA Yu-ping ◽  
张 遥 ZHANG Yao ◽  
魏 超 WEI Chao ◽  
李 翔 LI Xiang
Keyword(s):  
Femtosecond Laser ◽  
Cvd Diamond ◽  
Diamond Coating ◽  
Surface Polishing ◽  
Cvd Diamond Coating

Selective Area Deposition of Hot Filament CVD Diamond on 100 mm MOCVD Grown AlGaN/GaN Wafers

2019 ◽  
Vol 19 (2) ◽  
pp. 672-677 ◽  
Author(s):  
Raju Ahmed ◽  
Anwar Siddique ◽  
Jonathan Anderson ◽  
Chris Engdahl ◽  
Mark Holtz ◽  
...  
Keyword(s):  
Cvd Diamond ◽  
Selective Area ◽  
Hot Filament Cvd ◽  
Hot Filament ◽  
Area Deposition

Nondestructive Evaluation of CVD Diamond Coating Layers Using the Leaky Rayleigh Surface Wave

2006 ◽  
Vol 326-328 ◽  
pp. 701-704 ◽  
Author(s):  
Wen Wu Wang ◽  
Sung Jin Song ◽  
Hak Joon Kim ◽  
Dong Ju Yang ◽  
Sung Duk Kwon
Keyword(s):  
Surface Wave ◽  
Nondestructive Evaluation ◽  
Coating Layer ◽  
Chemical Vapor ◽  
Cvd Diamond ◽  
Diamond Coating ◽  
Rayleigh Surface Wave ◽  
Mechanical Parts ◽  
Time Trace ◽  
Cvd Diamond Coating

Chemical vapor deposit (CVD) diamond coating layer is expected to extend the lifetime of mechanical parts that are used severely abrasive conditions. However, one of the most severe problems is that the delamination between the CVD diamond coating layer and the silicon substrate occurs frequently due to large difference in the material properties. Therefore, the nondestructive evaluation of adhesive property of CVD diamond coating layer is needed. To address such a need, back-scattered Rayleigh surface wave is currently applied. However, the interpretation of the acquired signal is not easy at all. To take care of such a difficulty, we proposed the time trace angular scan (TTAS) plot and the frequency spectrum angular scan (FSAS) plot that can make possible of the systematic interpretation of the back-scattered signals from the diamond coating layer. In this paper, the concept of the TTAS and FSAS plots and the experimental results presented to demonstrate the effectiveness of the proposed approach.

INFLUENCE OF EMBEDDED TUNGSTEN PARTICLES ON MECHANICAL BEHAVIORS OF CVD DIAMOND COATING

2019 ◽  
Vol 27 (02) ◽  
pp. 1950097
Author(s):  
YAO WANG ◽  
PING HE ◽  
YINGCHAO CHEN ◽  
MUSEN LIU ◽  
CHENG LI ◽  
...  
Keyword(s):  
Crack Propagation ◽  
Tungsten Carbide ◽  
Chemical Vapor ◽  
High Hardness ◽  
Sem Analysis ◽  
Diamond Coating ◽  
Indentation Tests ◽  
Doping Technique ◽  
Cvd Diamond Coating ◽  
Hot Filament

Diamond coating has gained intensive attraction in the tribological field due to its high hardness. However, its weak flexibility always gives rise to the fragile crack, which causes the delamination and peeling off from substrate. In this work, a novel deposition method combining the conventional hot filament chemical vapor deposition (HFCVD) and particles doping technique is proposed to balance the hardness and flexibility of diamond coating, by which the diamond coating with tungsten particles is deposited on the co-cemented tungsten carbide substrate. The as-deposited diamond coating is characterized by scanning electron microscopy (SEM) analysis, surface roughness and Raman spectrum. The indentation tests are conducted to evaluate the crack propagation of diamond coating. Tribological behavior is examined on a reciprocating ball-on-plate tribometer. The results indicate that tungsten carbide may be formed between tungsten particles and diamond coating. The W–WC–amorphous carbon–diamond structural coating can validly inhibit the crack propagation and decrease the friction coefficient. Hence, adding embedding particles into the diamond coating may provide a useful way in enhancing the mechanical properties of diamond coating.

Investigation of Electron Emission From Si and Hot Filament CVD Diamond

1996 ◽  
Vol 424 ◽  
Author(s):  
J. Y. Shim ◽  
E. J. Chi ◽  
S. J. Rho ◽  
H. K. Baik
Keyword(s):  
Field Emission ◽  
Electron Emission ◽  
Cvd Diamond ◽  
Emission Characteristics ◽  
Turn On ◽  
Low Field ◽  
Hot Filament Cvd ◽  
Diamond Peak ◽  
Diamond Grain ◽  
Hot Filament

ABSTRACTThe field emission characteristics of the Si emitters and the diamond coated Si emitters are investigated. The Fowler-Nordheim plots of the two types of Si emitters show linear slopes. It means that the I-V characteristics follow the Fowler-Nordheim relation. Field emission for the two types of diamond coated Si emitters exhibits significant enhancement both in turn-on voltage and total emission current. The Raman spectrum shows that the high intensity graphite peak is observed with diamond peak and thereby large amounts of graphite may be included in the diamond grain boundary. It seems to be thought that the graphite participates in the low field emission. However, further investigations are needed to understand whether the graphite may enhance the emission characteristics of diamond or not.

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