ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 印刷: 1093-3611
ISSN オンライン: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v9.i1.90
pages 103-108

Plasma sprayed ceramics for low macroscopic field emitters

R. Tomaszek
Ecole Nationale Supérieure de Chimie de Lille, BP 108, 8, av. Mendeleïev, 59650 Villeneuve d'Ascq, France; and Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, ul. Janiszewskiego, 11/17, 50370 Wroclaw, Poland
Z. Znamirowski
Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, ul. Janiszewskiego, 11/17, 50370 Wroclaw, Poland
L. Pawlowski
Ecole Nationale Supérieure de Chimie de Lille, BP 108, 8, av. Mendeleïev, 59650 Villeneuve d'Ascq, France
J. Grimblot
Ecole Nationale Supérieure de Chimie de Lille, BP 108, 8, av. Mendeleïev, 59650 Villeneuve d'Ascq, France
J. Zdanowski
Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, ul. Janiszewskiego, 11/17, 50370 Wroclaw, Poland
W. Czarczynski
Faculty of Microsystems Electronics and Photonics, Wroclaw University of Technology, ul. Janiszewskiego, 11/17, 50370 Wroclaw, Poland

要約

Plasma sprayed coatings have been investigated as field emission cathodes. The tested materials were Al2O3+13%TiO2, Al2O3+40%TiO2, TiO2. Some of these coatings were laser engraved. The samples used were initially prepared for purposes other than field emission and their components and structures were not optimised for electron emission. The emission properties were evaluated from current-voltage characteristics taken in a diode configuration in a vacuum chamber under a pressure of 1×10−6 Pa. Preliminary results indicate that some layers are good field emitters (threshold field 1×10−7 V/m for Al2O3+13%TiO2). The emission stability was generally good and the emission curves were similar on repetition. No significant hysteresis in I-V plots for "up-and-down" measurements was noticed. A model of possible mechanism of low microscopic field emission is presented and microstructural investigations using techniques of XRD, Raman spectroscopy and SEM techniques of plasma sprayed and laser engraved layers enabled understanding of increase of field enhancement factor.


Articles with similar content:

STRUCTURE AND MECHANICAL PROPERTIES OF Nb−Al−N NANOCOMPOSITE FILMS AS A FUNCTION OF THE DEPOSITION PARAMETERS
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.19, 2015, issue 2
Vladyslav Rogoz, Pavlo Skrynskiy , Marek Opielak, Czeslaw Kozak, Volodymyr Ivashchenko
Si-C-N COMPOSITE POWDERS, THERMAL PLASMA SYNTHESIS AND CHARACTERIZATION
Progress in Plasma Processing of Materials, 1997, Vol.1, 1997, issue
R. Mach, H.-D. Klotz, C. Dreher, H. Drost, C. Olschewski
INFLUENCE OF MODIFYING ADDITIVES ON THE PHASE STABILITY AND RESISTANCE TO OXIDATION OF COATINGS BASED ON STABILIZED ZIRCONIUM DIOXIDE AND A CARBON−CARBON COMPOSITE MATERIAL
Nanoscience and Technology: An International Journal, Vol.7, 2016, issue 4
D. Yu. Sinitsyn, V. N. Anikin, S. A. Eremin, B. V. Ryabenko
EXPERIMENTAL INVESTIGATION OF SURFACE HARDNESS AND DRY SLIDING WEAR BEHAVIOR OF AA7050/B4Cp
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.19, 2015, issue 3-4
P. K. Giridharan, Ranjith Rajamanickam
INVESTIGATIONS OF VOLUME-CENTERED DISCHARGE IN AIR SUPERSONIC FLOW WITH ADDITIONAL PROPANE AND OXYGEN INJECTION
TsAGI Science Journal, Vol.48, 2017, issue 6
Andrey Yuryevich Urusov, Vyacheslav Konstantinovich Alatortsev, Vladimir Vladimirovich Skvortsov, Ivan Sergeevich Inshakov, Aleksandr Fedorovich Rozhkov, Sergei Ivanovich Inshakov, Aleksandr Aleksandrovich Uspenskii