A comparative study of graphene growth on SiC by hydrogen-CVD or Si sublimation through thermodynamic simulations

The structural and electronic properties of BN(5, 5) and C(5, 5) nanotubes under pressure are studied by using first principles calculations. In our study range, BN(5, 5) undergoes obvious elliptical distortion, while for C(5, 5) the cross section first becomes an ellipse and then, under further pressure, is flattened. The band gap of BN(5, 5) decreases with increasing pressure, which is inverse to that of zinc blende BN, whereas for C(5, 5) the metallicity is always preserved under high pressure. The population of charge density indicates that intertube bonding is formed under pressure. We also find that BN(5, 5) may collapse, and a new polymer material based on C(5, 5) is formed by applying pressure.

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Comparative study of the high-pressure behavior of ZnV2O6, Zn2V2O7, and Zn3V2O8

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2020.155505 ◽

2020 ◽

Vol 837 ◽

pp. 155505 ◽

Cited By ~ 3

Author(s):

D. Díaz-Anichtchenko ◽

D. Santamaria-Perez ◽

T. Marqueño ◽

J. Pellicer-Porres ◽

J. Ruiz-Fuertes ◽

...

Keyword(s):

High Pressure ◽

Comparative Study ◽

Pressure Behavior

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Comparative study of atmospheric and high pressure CO2 reforming of methane over Ni/MgO-AN catalyst

Catalysis Letters ◽

10.1007/s10562-004-0784-2 ◽

2005 ◽

Vol 99 (1-2) ◽

pp. 89-96 ◽

Cited By ~ 18

Author(s):

Yu-He Wang ◽

Bo-Qing Xu

Keyword(s):

High Pressure ◽

Comparative Study ◽

Co2 Reforming ◽

Co2 Reforming Of Methane ◽

High Pressure Co2

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Sufficiency of Reference Stress Solutions for FFS Evaluation of Crack-Like Flaws

Volume 3B: Design and Analysis ◽

10.1115/pvp2017-65715 ◽

2017 ◽

Author(s):

Kenji Oyamada ◽

Naoki Miura

Keyword(s):

High Pressure ◽

Elevated Temperature ◽

Comparative Study ◽

Assessment Procedure ◽

Bending Stress ◽

Draft Guideline ◽

Membrane Stress ◽

Reference Stress ◽

Standard Development

In Japan, a new standard of an assessment procedure for crack-like flaws in pressure equipment at elevated temperature is now under development in the High Pressure Institute of Japan (HPI). In this standard development, it is needed to adopt reference stress solutions for crack-like flaws in pressure equipment being subjected to membrane stress and/or bending stress. Such reference stress solutions have been proposed in various references such as ASME FFS-1/API579-1, BS7910, R5, FBR draft guideline, HPIS Z101-2, etc. A comparative study of those reference stress solutions was conducted in order to select appropriate one. As a result, reference stress solutions in HPIS Z101-2 were adopted. The sufficiency of adopted reference stress solutions was introduced in this paper. Also, the reference stress solutions for axially and circumferentially through-wall rectangular flawed cylinders, which were not provided in the HPIS Z101-2 standard but were utilized to derive those solutions adopted in the standard, were introduced in this paper. These solutions should be adopted in a new HPI standard for crack-like flaws in pressure equipment at elevated temperature.

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