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題名 | 射出厚件陶瓷之溶劑脫脂行為=Solvent Debinding of Ceramic Injection Molding Articles with a Thick Cross Section |
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作者 | 吳榮源; 韋文誠; | 書刊名 | 陶業學刊 |
卷期 | 1:2 1997.07[民86.07] |
頁次 | 頁1-8 |
分類號 | 440.33 |
關鍵詞 | 氧化鋯; 雷射測距; 溶劑脫脂; 擴散係數; Zirconia; Laser dilatometry; Solvent debinding; Diffusion coefficient; |
語文 | 中文(Chinese) |
中文摘要 | 本研究之主要目的在了解射出厚件氧化鋯陶瓷之溶劑脫脂行為,用以縮短後續熱 脫脂的時間。由於脫脂的速度過快,易造成缺陷的存在,因此採用正庚烷,藉由量測溶劑脫 脂量與時間關係,求得其脫脂速率。另利用溶劑脫脂,先形成排除黏結劑所需的孔道,縮短 黏結劑燒除的時間,將整個脫脂所耗的時間降到最低。研究中經由了解試片在溶劑脫脂之尺 寸膨脹量變化,來選定溶劑脫脂的溫度。此外,利用量測之擴散係數值,估計溶劑脫脂適當 的時間,進而求得一個最佳的溶劑脫脂條件,包括溶劑脫脂的溫度與時間,如此便可提高脫 脂速度,減少脫脂缺陷存在。 |
英文摘要 | The behavior of solvent debinding of zirconia ceramics with a thickness over than 10 mm prepared by injection molding was investigated. In order to reduce thermal debinding time and the formation of defects in green body due to inappropriate debinding rate, heptane was used as solvent and the debinding rate was determined. The open channels formed in the solvent debinding assist the burnout of insoluble binder during thermal debinding and shorten the total time of the binding cycle. By monitoring the dimensional expansion and debinding rate of the articles, the solvent temperature was selected. Furthermore, by investigation the change of diffusion coefficient of the thick parts, a suitable debinding time and temperature could be decided so to get a best debinding conditions. Consequently, the debinding rate can be increased without introduce debinding defects. |
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