Effect of plasma electrolytic oxidation on the microstructure and heat dissipa-tion properties of 6063 Al alloy heat sinks

• Main Authors: Kun-Yen Lu, 呂昆諺
• Other Authors: Chaur-Jeng Wang
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/ph6p7x

碩士 === 國立臺灣科技大學 === 機械工程系 === 104 === Plasma electrolytic oxidation coating was prepared on 6063 aluminum alloy by electrolyte of Na2SiO3 and KOH. different duty cycle and frequency response of plasma processing liquid to the surface oxide film, further installation of cooling fins do tests to mini-computer, and then to XRD, Scanning Electron Microscopy (SEM), Energy Disper-sive Spectrometer (EDS) analysis of the material composition and surface roughness analysis. The alumina film surface roughness, film thickness, and set the pulse frequency and duty cycle parameters related to installation oxide layer on a mini-computer operator thicker, higher roughness heat sink temperature test, you can go to a better cooling effect. The experimental parameters can be learned at the pulse frequency 250 Hz conditions, the same duty cycle available to a larger Ra. Duty cycle of 75% can be obtained and a thicker layer of higher surface roughness. From the experimental results we found that after plasma treatment liquid heat sink, thickness and surface roughness of the surface oxide film will increase the heat sink for improved heat dissipation.