| 研究生: |
陳彥銘 Chen, Yen-ming |
|---|---|
| 論文名稱: |
石墨化溫度對碳/碳複合材料機械及磨潤性質之影響 Effect of graphitization temperature on mechanical and tribological properties of Carbon/Carbon composites |
| 指導教授: |
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: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 174 |
| 中文關鍵詞: | 碳/碳複合材料 、石墨化 、磨潤 |
| 外文關鍵詞: | Carbon/Carbon composites, Graphitization, Tribology |
| 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,因此碳/碳複合材料可成為飛機煞車材料的首選。
本研究主要是藉由石墨化溫度之改變探討石墨化處理對碳/碳複合材料機械、磨潤等性質之影響;主要目的在於尋求出較經濟且適宜製備煞車試片的中間石墨化溫度。實驗結果顯示,對PAN/resin碳/碳複合材料而言,較高的石墨化處理溫度,會造成試片的密度、孔隙率、厚度及重量產生較大的變化量。其中經T3℃中間石墨化處理後試片之孔隙率較T1℃及T2℃試片為高;而進一步經含浸處理後發現,T3℃試片之含浸效率則較其他試片為高,其最終孔隙率反而最低,密度則為最大;在機械性質方面亦是以T3℃試片較佳。在磨潤性質表現上,以T2℃試片之磨擦及磨耗性質較其他試片優異且穩定。而T3℃試片其磨擦係數中等,其磨耗量因無最終石墨化處理而甚大。綜合比較所有性質發現,本研究的最佳石墨化溫度為T2℃。
This paper studies the effect of graphitization treatment on mechanical and tribological properties of Carbon/Carbon composites by changing the graphitization temperature. The main purpose is to find the best intermediate graphitization temperature to fabricate the brake pad which is more economical. The experimental results showed, for the materials of PAN/resin C/C composites, the higher graphitization treatment temperature caused the higher variation of density, porosity, thickness and weight. The porosity of the intermediate graphitized specimen was higher than the specimen T1℃ and T2℃. After the densification process, the densification efficiency of the specimen T3℃ is better than the other specimens, so the finally porosity is the lowest and the density is the highest;for the mechanical property, the specimen T3℃ is also the best. In the view of the tribology performance, the friction and wear properties of specimen T2℃ was better and more stable than the other. However, the friction coefficient of specimen T3℃ was medium and the wear rate was highest, that is because the specimen T3℃ didn’t experienced the finally graphitization treatment. Finally, synthesis comparised all specimens properties, the best graphitization temperature is T2℃.
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校內:2107-08-01公開