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The nanometer diamond coating titanium-based field emission cathode technology research

Author: DiChunXue
Tutor: ZhangZhiYong
School: Northwestern University
Course: Circuits and Systems
Keywords: nano-diamond coating Ti substrate thermal adhesion (bonding) Field emission cathode hydrogen plasma surface treatment
CLC: TN141
Type: Master's thesis
Year: 2003
Downloads: 70
Quote: 3
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Abstract


With both CRT’s and LCD’s virtue, FED has a bright future in all kinds of PDF.In this thesis, a new type of field emission cathode was described, that is using simple technique to deposit commercial nano-diamond powder on Ti substrates, bonding diamond and Ti, and form Ohmic-contact by proper high temperature to form cathodes. This methods is adapt to large area and batch production.Feasibility of preparation of this kind of cathode was investigated theoretically, and a series of technique was proposed.The method of preparing the uniform coating, the techniques of thermal bonding and hydrogen plasma treatment was investigated experimentally. The optimum coating method and technological parameters was summarized.The cathode sample was characterized by XRD, TEM, SEM, LRM and EDS methods. The result indicated that the surface of sample contain TiC, which verifying bonding was formed between diamond coating and Ti substrate. The field emitting property of samples were measured with testing system designed and constructed by ourselves. Cathode prepared by experiment indicated preferable field emission property.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Vacuum Electronics > Electron beam devices,X-ray tube, cathode ray tubes > Display
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