| 研究生: |
朱傳裕 Chu, Chuan-yu |
|---|---|
| 論文名稱: |
石墨化順序對碳/碳複合材料機械及磨潤性質之影響 Effect of graphitization sequence on mechanical and tribological properties of carbon/carbon composites |
| 指導教授: |
李國榮
Lee, Kuo-jung 朱建平 Ju, Chien-ping 陳瑾惠 Chern Lin, Jiin-Huey |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 材料科學及工程學系 Department of Materials Science and Engineering |
| 論文出版年: | 2009 |
| 畢業學年度: | 97 |
| 語文別: | 中文 |
| 論文頁數: | 115 |
| 中文關鍵詞: | 緻密化 、石墨化 、碳/碳複合材料 、磨潤性質 、機械性質 |
| 外文關鍵詞: | Carbon/carbon composites, Graphitization, Mechanical properties, Tribological properties, Densification |
| 相關次數: | 點閱:87 下載:0 |
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碳/碳複合材料(carbon/carbon composites, C/C composites)擁有許多優越的性質,如質輕、耐腐蝕、耐熱衝擊、低熱膨脹性、高溫下優越的機械性質和自身潤滑性等,因此成為飛機煞車材料的首選。
本研究以快速碳化新製程製備PAN/Resin碳/碳複合材料,並探討石墨化處理順序以及緻密化次數之改變對碳/碳複合材料機械與磨潤等性質之影響。實驗結果顯示,石墨化之後會對各項基本性質有較大的改變,如較大的重量損失、較高的孔隙率增加量。P系列在磨潤與機械性質上較Q系列試片來的優異。隨緻密化次數增加,試片會擁有較高之密度與強度。第F次緻密化之後,密度的增加速率逐漸減少,此乃由於表面空孔堵塞的結果,然N次緻密化之試片在密度及機械性質上仍優於M次緻密化之試片。
綜合磨潤性質與機械性質考量比較發現,B此組試片表現最優異。
Carbon/carbon composites showed many superior properties, such as low density, chemical resistance, good thermal-shock resistance, low thermal expansion coefficient, high mechanical property at high-temperature and self-lubricity, so C/C composites were used as aircraft brake material.
In order to explore the applicable and economical treatment to fabricate the brake pad, this studies focuses on the effects of graphitization and densification on mechanical and tribological properties of Carbon/Carbon composites by changing the sequence and times of graphitization and densification. According to the experimental results, among PAN/resin C/C composites, P series show better mechanical and tribological properties than Q series.
As times of densification increases, the strength and density both increase. After the Fth densification, the increasing rate of strength and density decreases. This result is induced by the obstruction in the cores of the surface. Compare the mechanical and tribological properties, N times of densification is enough to meet the request of application to aircraft brake material ( with wear coefficient 0.338).
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校內:2108-07-30公開