نتایج جستجو برای: thermal chemical vapor deposition tcvd

تعداد نتایج: 673962  

ژورنال: مواد پرانرژی 2020

 Nitride compounds are among the most important and widely used compounds in life. The high chemical, thermal and mechanical stability of nitride compounds is due to the interaction of two factors, such as very strong bonds between the elements and the existence of completely covalent structures. Triphosphorus pentanitride (P3N5) is an important nitride compound. Three structures of alpha, gamm...

2009
Cheng Qian Hang Qi Jie Liu

The Journal of Physical Chemistry C is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Effect of Tungsten on the Purification of Few-Walled Carbon Nanotubes Synthesized by Thermal Chemical Vapor Deposition Methods Cheng Qian, Hang Qi, and Jie Liu J. Phys. Chem. C, 2007, 111 (1), 131-133 • DOI: 10.1021/jp064139t Downloaded from http://pubs.acs...

2007
Yangquan Chen Jian-Xin Xu Changyun Wen

A high-order terminal iterative learning control (ILC) scheme is proposed where only the terminal output tracking error instead of the entire output trajectory tracking error is used to update the control proole. A convergence condition is obtained for a class of uncertain discrete-time time-varying linear systems. An application example is presented, by simulation, for a rapid thermal processi...

2014
J. He J. C. Jiang

Perovskite BaTiO3 thin films have a wide range of applications for advanced devices. Especially, epitaxial BaTiO3 thin films are highly desirable for these advanced applications. So far, such epitaxial BaTiO3 films have been successfully fabricated on different single-crystal substrates using various deposition techniques including RF magnetron sputtering, molecular beam epitaxy, metallorganic ...

2006
M. Cantoro S. Hofmann S. Pisana C. Ducati A. Parvez A. C. Ferrari J. Robertson

We report a detailed study of surface-bound chemical vapor deposition of carbon nanotubes and nanofibers from evaporated transition metal catalysts exposed to ammonia diluted acetylene. We show that a reduction of the Fe/Co catalyst film thickness below 3 nm results into a transition from large diameter (N40 nm), bamboo-like nanofibers to small diameter (∼5 nm) multi-walled carbon nanotubes. Th...

1999
B. J. Kim J. Lee J. B. Yoo

(La0.5,Sr0.5)CoO3 (LSCO) ®lms were prepared by a sol-gel method on silica grown by various methods such as thermal oxidation, plasma enhanced chemical vapor deposition (PECVD) and atmospheric pressure chemical vapor deposition (APCVD). Polyvinyl alcohol (PVA) was used as a wetting agent to improve the surface wetting behavior of the LSCO precursor solution onto the silica. The surface wetting o...

2015

The study of chemical reaction rates or “chemical kinetics” is fundamental to the study of chemistry itself and is intimately connected as well to life’s biochemical and biological processes. Most chemical reactions proceed by a complex mechanism that involves a series of elementary steps and it is often the role of chemical kinetics studies to identify these steps, with one typically expected ...

2017
Sumana Ghosh

Thermal barrier coatings (TBCs) provide effective thermal barrier to the components of gas turbine engines by allowing higher operating temperatures and reduced cool‐ ing requirements. Plasma spraying, electron-beam physical vapor deposition, and sol‐ ution precursor plasma spray techniques are generally used to apply the TBCs on the metallic substrates. The present article addresses the TBCs f...

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