Nondestructive Evaluation of Adhesive Strength of CVD Polycrystalline Diamond Coatings Deposited on Sialon Substrates

1991 ◽  
pp. 49-57 ◽  
Author(s):  
J. C. Conway ◽  
P. H. Cohen ◽  
B. R. Tittmann ◽  
W. R. Drawl ◽  
M. Meloncelli ◽  
...  
Keyword(s):  
Nondestructive Evaluation ◽  
Adhesive Strength ◽  
Polycrystalline Diamond ◽  
Diamond Coatings

Development in Mechanics Research of Diamond Coatings/WC Interface Based on Molecular Dynamics Simulation

2014 ◽  
Vol 898 ◽  
pp. 41-46
Author(s):  
Xiao Gang Jian ◽  
Yun Hua Zhang
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Adhesive Strength ◽  
Deposition Process ◽  
Dynamics Simulation ◽  
Microscopic Structure ◽  
Diamond Coatings ◽  
Paper Briefly ◽  
Film Substrate ◽  
Important Significance

This paper briefly reviews the overseas and domestic research status of the mechanics of hetero film-substrate interface based on molecular dynamics simulation, on this basis building the accurate model of diamond coatings/WC interface and executing the molecular dynamic simulation, exactly measuring the adhesive strength of the diamond coatings/WC interface, finally exploring the influence of interface scales on the adhesive strength of the diamond coatings/WC interface and verifying the feasibility of studying the microscopic structure by molecular dynamics simulation to characterize the mechanical properties of macrostructure, which has important significance for optimizing deposition process of diamond coatings to improve the adhesive strength of the interface.

scholarly journals Polishing of Black and White CVD Grown Polycrystalline Diamond Coatings

2018 ◽  
Vol 5 (2) ◽  
pp. 50-58
Author(s):  
Snigdha Roy ◽  
Vamsi K. Balla ◽  
Awadesh K. Mallik ◽  
Victor G. Ralchenko ◽  
Andrey P. Bolshakov ◽  
...  
Keyword(s):  
Polycrystalline Diamond ◽  
Diamond Coatings ◽  
Black And White

scholarly journals Influence of the Heat Dissipation Mode of Long-Flute Cutting Tools on Temperature Distribution during HFCVD Diamond Films

Crystals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 394
Author(s):  
Zhang ◽  
Qian ◽  
wang ◽  
Huang ◽  
Zhang ◽  
...  
Keyword(s):  
Heat Dissipation ◽  
Focal Point ◽  
Cutting Tools ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Polycrystalline Diamond ◽  
Decisive Role ◽  
Diamond Coatings ◽  
The Difference ◽  
The Individual

The distribution of substrate temperature plays a decisive role on the uniformity of polycrystalline diamond films on cemented carbide tools with a long flute, prepared by a hot filament chemical vapor deposition (HFCVD). In this work, the heat dissipation mode at the bottom of tools is a focal point, and the finite volume method (FVM) is conducted to simulate and predict the temperature field of tools, with the various materials of the holder placed under the tools. The simulation results show that the thermal conductivity of the holder affects the temperature difference of the individual tools greatly, but only affects the temperature of different tools at the same XY plane slightly. Moreover, the ceramic holder can reduce the difference in temperature of an individual tool by 54%, compared to a copper one. Afterwards, the experiments of the deposition of diamond films is performed using the preferred ceramic holder. The diamond coatings on the different positions present a highly uniform distribution on their grain size, thickness, and quality.

Effects of Various Seeding Methods on Multi-Layered Diamond Coatings Deposited via Hot Filament Chemical Vapor Deposition

2013 ◽  
Vol 845 ◽  
pp. 36-40
Author(s):  
Tze Mi Yong ◽  
Esah Hamzah
Keyword(s):  
Natural Diamond ◽  
Chemical Vapor ◽  
Polycrystalline Diamond ◽  
Columnar Structure ◽  
X Rays ◽  
Diamond Coating ◽  
Diamond Coatings ◽  
Good Adhesion ◽  
Hot Filament ◽  
Xrd Method

Multi-layer alternating nanocrystalline diamond (NCD) layer and polycrystalline diamond (PCD) layer was successfully deposited on pretreated tungsten carbide (WC) substrates with various seeding sizes (<0.1μm synthetic, <0.5μm synthetic, <0.25μm natural, <0.5μm natural, and <1μm natural) diamond with and without hammering by silicon carbide. X-rays penetrate through the coating to the substrate from XRD method was able to show strong peaks of diamond relative to WC despite the diamond film being 4μm thick only. It is found that substrates with no hammering produce stronger signals. The coating was cross sectioned and analysed using field emission scanning electron microscopy showing the multi-layer with NCD grains that has coalesced and columnar structure for PCD. None of the diamond coating delaminated during cross sectioning showing good adhesion. Raman was able to capture data from the 1-1.6μm thick NCD layer only while AFM measured the extreme low roughness of the NCD surface.

Quantitative measurement for the effect of enhanced nucleation on the adhesive strength of diamond coatings

2001 ◽  
Vol 142-144 ◽  
pp. 738-742 ◽  
Author(s):  
Shoji Kamiya ◽  
Naoki Yoshida ◽  
Yoichi Tamura ◽  
Masumi Saka ◽  
Hiroyuki Abé
Keyword(s):  
Adhesive Strength ◽  
Quantitative Measurement ◽  
Diamond Coatings

scholarly journals Comprehensive topography characterization of polycrystalline diamond coatings

2021 ◽  
Author(s):  
Abhijeet Gujrati ◽  
Antoine Sanner ◽  
Subarna Raj Khanal ◽  
Nicolaie A Moldovan ◽  
Hongjun Zeng ◽  
...  
Keyword(s):  
Polycrystalline Diamond ◽  
Diamond Coatings

Fretting friction and wear of polycrystalline diamond coatings

1996 ◽  
Vol 5 (6-8) ◽  
pp. 649-653 ◽  
Author(s):  
E. Liu ◽  
B. Blanpain ◽  
J.-P. Celis
Keyword(s):  
Friction And Wear ◽  
Polycrystalline Diamond ◽  
Diamond Coatings

Large Area Deposition of Polycrystalline Diamond Coatings by Microwave Plasma CVD

2013 ◽  
Vol 72 (4) ◽  
pp. 225-232 ◽  
Author(s):  
Awadesh K. Mallik ◽  
Sandip Bysakh ◽  
Kalyan S. Pal ◽  
Nandadulal Dandapat ◽  
Bichitra K. Guha ◽  
...  
Keyword(s):  
Microwave Plasma ◽  
Polycrystalline Diamond ◽  
Diamond Coatings ◽  
Plasma Cvd ◽  
Large Area ◽  
Microwave Plasma Cvd ◽  
Area Deposition
Sign in / Sign up

Export Citation Format

Share Document