以射出成型製作陶瓷之研究

本文主要的目為利用粉末射出成形技術，直接將陶瓷粉末射入模穴，脫膜後隨即進行燒結成型，以改良傳統陶瓷粉末乾壓、燒結再進行二次加工才得所需外型尺寸的新製造技術。配合模流分析軟體，參酌材料特性及幾何形狀，預測成品的幾何變形、應力分佈、可能包封位置、收縮及結合線等狀態，藉由模擬可能遭遇的缺失，事先進行預防及修改，以加速實驗評估及進行。並透過控制結合劑配製、射出參數、燒結參數及電性確認等各項變數，來確保工件外形精確度及壓電元件特性。經實驗證明以此方法所製作出之壓電陶瓷元件，其具有功能代表性之密度可接近壓電粉末乾壓成型之期望值。由此可推論，此方法能製作出接近壓電粉末乾壓相同機械性質與電性之壓電陶瓷元件。

關鍵字

壓電陶瓷；粉末射出成型

並列摘要

Study of using powder injection molding to produce PZT components is the primary focus in this article. Ceramics powder is injected to the molding immediately to fabricate the ceramics component through parting and sintering. This new approach improves the process of die pressing requires more machining. According to material feature and geometry, final component’s geometric shape, stress distribution, position of the air trap, shrinkage and weld ling line etc. is estimated in advance by using operation mold flow analysis software. Also, an attempt is to use injection molding software to simulate filling process to improve failure in order to accelerate experiment procedure. Through controlling the formula of the binder, injection parameters, sintering parameters and physical properties of PZT can preserve the geometric shape and material properties of the PZT component. According to experimental result, density as an important index can reach the expected target for PZT. It concludes that the proposed powder inject method is able to fabricate the same material properties as the conventional way by using die pressing process.

並列關鍵字

Piezoelectric Ceramics ； Powder injection molding

參考文獻

10.鄭江河,“壓電式噴墨列印頭之振動板的設計,”大葉學報,

5. K. S. Hwang and T. H. Tsou, “Thermal Debinding of Powder

8. 王傳勝“多段溫控金屬粉末射出成型之影響性探討” 國立中央大學機械工程研究所碩士論文，2006年6月

21.W. P. Mason, “Piezoelectricity, Its History and Applications”, J. Acoust. Soc. Am., 70（6）：1561～1566, December, 1981.

25.Graff, K. F., "A History of Ultrasonics," Chapter 1 of "Physical Acoustics," Vol. 15, Mason and Thurston, editors, Academic Press, 1981.

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以射出成型製作陶瓷之研究

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