Effect of surface treatment on properties of carbon/carbon composites

• Main Authors: Tsung-WeiChen, 陳聰偉
• Other Authors: Chien-Ping Ju
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/46207654555608340824

碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 101 === This study is to investigate the effect of surface treatment of fast-carbonized carbon/carbon composites on density, porosity, densification efficiency and mechanical properties. Phenolic resin and petroleum pitch were used as precursor, and in impregnation stage resin were used. All the specimens were eroded in Flinak and observed the changes in sealing layer before and after the erosion test. The test results indicate that carbon/carbon applied surface treatment at densification stage with higher density, mechanical strength, and lower porosity than it applied surface treatment at hot-pressed stage. After erosion test, the sealing layer and the carbon/carbon composite specimens bonded together, without peeling and delamination. Consequently, carbon/carbon composite applied surface treatment can improve the overall properties of carbon/carbon composite, and the sealing layer still remain after erosion test in Flinak, it has great potential in high-temperature heat exchanger tube.