Shock-Induced Martensitlc Transformation of Highly Oriented Graphite to Diamond

1992 ◽  
Vol 270 ◽  
Author(s):  
David. J. Erskine ◽  
William. J. Nellis
Keyword(s):  
Crystal Structure ◽  
Shock Wave ◽  
Pyrolytic Graphite ◽  
Orientational Order ◽  
Stability Limit ◽  
Highly Ordered Pyrolytic Graphite ◽  
Graphite Structure ◽  
Wave Profiles ◽  
Onset Pressure ◽  
The Stability

ABSTRACTShock-wave profiles of highly ordered pyrolytic graphite shocked normal to the basal plane of the graphite crystal structure have been measured. For graphite with sufficient orientational order a martensitic transformation to a diamond-like phase is observed with a transition onset pressure 19.6±0.7 GPa, the stability limit of the graphite structure under shock compression. The minimum overpressure required for the transformation is not more than 6 GPa.

scholarly journals Laser-induced versus shock wave induced transformation of highly ordered pyrolytic graphite

2015 ◽  
Vol 106 (16) ◽  
pp. 161902 ◽  
Author(s):  
D. Veysset ◽  
T. Pezeril ◽  
S. Kooi ◽  
A. Bulou ◽  
Keith A. Nelson
Keyword(s):  
Shock Wave ◽  
Pyrolytic Graphite ◽  
Highly Ordered Pyrolytic Graphite ◽  
Wave Induced

scholarly journals Understanding the electrochemistry of “water-in-salt” electrolytes: basal plane highly ordered pyrolytic graphite as a model system

2020 ◽  
Vol 11 (27) ◽  
pp. 6978-6989 ◽  
Author(s):  
Pawin Iamprasertkun ◽  
Andinet Ejigu ◽  
Robert A. W. Dryfe
Keyword(s):  
Basal Plane ◽  
Pyrolytic Graphite ◽  
Model System ◽  
Concentrated Solutions ◽  
Highly Ordered Pyrolytic Graphite ◽  
System P ◽  
The Stability ◽  
Stability Of Water

The stability of water-in-salt electrolyte systems is investigated using highly concentrated solutions of KF(aq) with graphite as a model system.

scholarly journals Equation of state studies at SILP by laser-driven shock waves

1996 ◽  
Vol 14 (2) ◽  
pp. 157-169 ◽  
Author(s):  
Yuan Gu ◽  
Sizu Fu ◽  
Jiang Wu ◽  
Songyu Yu ◽  
Yuanlong Ni ◽  
...  
Keyword(s):  
Shock Wave ◽  
High Pressure ◽  
Equation Of State ◽  
Shock Waves ◽  
Target Surface ◽  
Shock Adiabats ◽  
Pressure Shock ◽  
Aluminum Target ◽  
Laser Illumination ◽  
The Stability

The experimental progress of laser equation of state (EOS) studies at Shanghai Institute of Laser Plasma (SILP) is discussed in this paper. With a unique focal system, the uniformity of the laser illumination on the target surface is improved and a laser-driven shock wave with good spatial planarity is obtained. With an inclined aluminum target plane, the stability of shock waves are studied, and the corresponding thickness range of the target of laser-driven shock waves propagating steadily are given. The shock adiabats of Cu, Fe, SiO2 are experimentally measured. The pressure in the material is heightened remarkably with the flyer increasing pressure, and the effect of the increasing pressure is observed. Also, the high-pressure shock wave is produced and recorded in the experimentation of indirect laser-driven shock waves with the hohlraum target.

scholarly journals Scanning Tunneling Microscope Investigation of Self-Assembled Rosette Nanotubes on Highly Ordered Pyrolytic Graphite

2010 ◽  
Vol 16 (S2) ◽  
pp. 470-471 ◽  
Author(s):  
J-Y Cho ◽  
G Borzsonyi ◽  
H Fenniri
Keyword(s):  
Scanning Tunneling Microscope ◽  
Pyrolytic Graphite ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Microscope Investigation ◽  
Rosette Nanotubes ◽  
Highly Ordered Pyrolytic Graphite ◽  
Self Assembled

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

Characterisation of highly ordered pyrolytic graphite with covalently attached ferritin by electron probe microanalysis

The Analyst ◽  
1988 ◽  
Vol 113 (2) ◽  
pp. 341 ◽  
Author(s):  
Robert F. Antrim ◽  
Alexander M. Yacynych ◽  
Henry J. Wieck ◽  
George W. Luther
Keyword(s):  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Pyrolytic Graphite ◽  
Highly Ordered Pyrolytic Graphite

Shock wave profiles in the Burnett approximation

2000 ◽  
Vol 62 (5) ◽  
pp. 6648-6666 ◽  
Author(s):  
F. J. Uribe ◽  
R. M. Velasco ◽  
L. S. García-Colín ◽  
E. Díaz-Herrera
Keyword(s):  
Shock Wave ◽  
Wave Profiles

scholarly journals Covalent Modification of Highly Ordered Pyrolytic Graphite with a Stable Organic Free Radical by Using Diazonium Chemistry

2016 ◽  
Vol 23 (6) ◽  
pp. 1415-1421 ◽  
Author(s):  
Gonca Seber ◽  
Alexander V. Rudnev ◽  
Andrea Droghetti ◽  
Ivan Rungger ◽  
Jaume Veciana ◽  
...  
Keyword(s):  
Free Radical ◽  
Pyrolytic Graphite ◽  
Covalent Modification ◽  
Highly Ordered Pyrolytic Graphite ◽  
Organic Free Radical

Optimization of the Robust Stability Limit for Multi-Cutter Turning Processes

2015 ◽  
Author(s):  
Marta J. Reith ◽  
Daniel Bachrathy ◽  
Gabor Stepan
Keyword(s):  
Robust Stability ◽  
Optimal Parameter ◽  
Stability Limit ◽  
Boundary Function ◽  
Lower Envelope ◽  
Computation Method ◽  
Parameter Region ◽  
Dynamical Parameters ◽  
The Stability ◽  
Machining Parameter

Multi-cutter turning systems bear huge potential in increasing cutting performance. In this study we show that the stable parameter region can be extended by the optimal tuning of system parameters. The optimal parameter regions can be identified by means of stability charts. Since the stability boundaries are highly sensitive to the dynamical parameters of the machine tool, the reliable exploitation of the so-called stability pockets is limited. Still, the lower envelope of the stability lobes is an appropriate upper boundary function for optimization purposes with an objective function taken for maximal material removal rates. This lower envelope is computed by the Robust Stability Computation method presented in the paper. It is shown in this study, that according to theoretical results obtained for optimally tuned cutters, the safe stable machining parameter region can significantly be extended, which has also been validated by machining tests.

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