本研究為針對快速碳化製備的碳/碳複合材料分別於不同階段實施表面處理，以此探討密度、孔隙率、含浸效率及機械性質的影響。在預浸過程中分別使用酚醛樹脂與石油瀝青做為碳的前驅體，緻密化階段皆使用樹脂做為含浸液。試片最後會在氟化鹽類中進行沖蝕試驗，觀察密封層在沖蝕前後的變化。
實驗結果顯示，於不同緻密化階段實施表面處理的試片對於密度的提升、孔隙率的下降及機械性質的提高均較熱壓階段實施表面處理的試片表現優異。且經過沖蝕試驗後，表面處理層與碳/碳複合材料表面依然擁有接合性。
綜合實驗結果發現，於緻密化階段實施表面處理的試片整體性質均提高了，並經過氟化鹽類環境中的沖蝕試驗後，其密封性依然不受影響，極具應用於高溫熱交換器的潛力。

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.

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