摘要
为发展在玻璃表面的镀膜工艺,进行了应用线爆喷涂技术在玻璃管内表面制备导电铜膜的试验。结果表明,在一定的放电电压范围内,该技术可在玻璃管内表面制造较均匀的涂层,涂层与玻璃管内表面的附着强度达2.632 MPa,SEM电子显微观测发现,铜微粒已深入玻璃基体内,同时测得涂层厚度400-500μm,电导率18.37 kS/m,玻璃管在喷涂前的工频耐压约40 kV,喷涂后约为38 kV。
In order to develop an electrical conducting film onto the dielectric substrate, such as glass and ceramic, to enhance their surface performances, the Wire Exploding Spray Coating （WESC） method is applied to deposit a thick copper film onto the inner surface of a glass tube. The electrical diagram and the schematic diagram of the spray coating chamber is given. The film obtained by WESC method at the atmosphere pressure and room temperature is more uniform when a higher discharging voltage between the copper wire is used, which means more energy is deposited into the copper wire, and the wire will he destructed more efficiently. But the glass tube will fall to pieces if the voltage is above 22 kV, which will cause a strong shock wave, and a 20 kV discharging voltage is applied in this paper. A series of tests have been done to the film, the adhesive strength between the copper film and the glass substrate is 2. 632 MPa by a direct pull-off test. The SEM photograph shows that the copper particle penetrates deeply into the glass substrate, which causes a strong adhesion between the film and substrate, and the thickness of the film is about 400 to 500μm after being sprayed three times. The electrical conductivity of the copper film is about 1. 837 × 10^4 Ω^-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, without obviously decrease.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2007年第2期199-201,205,共4页
High Voltage Engineering
关键词
线爆喷涂
玻璃
镀膜
表面改性
附着强度
wire exploding spray coating （WESC）
glass
film depositing
surface modification
adhesive strength
