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Electrical Conducting Coating on Glass Substrate Deposited by Wire Exploding Spray Coating Method

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Abstract:

An electrical conducting copper coating on the glass substrate is deposited by means of wire exploding spray coating (WESC). The coating system basically consists of a high voltage pulsed power supply and a coating chamber. A pulsed voltage is produced by the power supply upon the metal wire in the coating chamber. The whole process is under taken at atmosphere pressure and room temperature. The coating is more uniform when a higher discharging voltage is applied, which means more energy is deposited into the copper wire in the identical time, so the wire will be destructed more efficiently. A 20 kV discharging voltage is applied in this paper for the balance of coating quality and harmless to the glass substrate. The coating samples are analyzed by a series of tests. The SEM photograph shows that the copper particles penetrate deeply into the glass substrate, which results in a strong adhesion of the coating, and the thickness of the coating is about 400 to 500 μm after sprayed three times. The electrical conductivity of the copper coating is about 1.837*104 1-1·m-1 tested by a Kelvin electric bridge, and the 50 Hz withstand voltage of the glass tube before and after the spray coating is about 40 kV and 38 kV, respectively, with no obvious decrease.

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Periodical:

Key Engineering Materials (Volumes 373-374)

Pages:

367-370

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.373-374.367

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Online since:

March 2008

Authors:

Jia Zhi Yang, Zhong Yang Liu, Dong Wei Xu, Tian Jie Liu

Keywords:

Electrical Conducting Coating, Glass Substrate, Wire Exploding Spray Coating (WESC)

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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