本研究分成三個部份，即(1)利用實驗設計法探討坯體成份對氧化鋁杯料品質的影響；(2)探討超臨界流體對於氧化鋁坯料萃取脫脂的行為；(3)利用分子模擬來探討黏結劑在氧化鋁表面的吸附行為。
第一部份為利用McAndersen實驗設計法，設計出十四組不同的氧化鋁坯料配比，研究的坯體成份的範圍為氧化鋁(Al)：87-89wt%，聚丙烯(PP)：5-9.25wt%，石蠟(PW)：3-7.25wt%與硬脂酸(SA)：0.75-1.5wt%。將這十四組坯料經粉末射出成形(PIM)製程得製得生坯、棕坯、以及燒結坯體，以各項設備分析各坯料的密度以及燒結強度，再利用統計方法分析各坯體成份對PIM各製程極體性質的影響，另外對於燒結坯體的表面品質及微結構也的以觀察及分析。
研究結果顯示氧化鋁粉末含量依然主導著系統的各項性質，就生坯密度而言，氧化鋁粉末以87.8wt%作為分野，含量在其之上時，對提高生坯密度的順序依次為Al＞SA＞PW＞PP，在以下者依序為SA＞Al＞PW＞PP。對減少生坯密度變異性的效果的順序依次為PP＞PW＞SA＞Al。就燒結體彎曲強度而言，以氧化鋁粉末88.5wt%作為分野，在其上者對強度的增加依序為SA＞PP＞PW＞Al，而在88.5wt%以下時為Al＞SA＞PP＞PW。藉由觀察燒結體的外觀可發現，當PP含量過高時，有縱向裂痕出現；較高強度的試棒如第12組其晶相有較小的晶粒粒徑，且帶有不同的柱狀晶與等軸晶夾雜存在，而第3組為強度較弱其晶粒粒徑較大且大多呈柱狀晶。
第二個部份為超臨界流體在脫脂製程上的研究。藉由控制壓力、溫度、流速、基體孔徑、修飾劑的添加來探討超臨界流體(CO2)對氧化鋁坯體中黏結劑萃取效率的影響。實驗結果顯示提高溫度、流速以及壓力均可提升萃取效率，其中以壓力的效果最為顯著，當CO2流速1.5ml/min、溫度70℃，壓力由150kg/cm2，提升至300kg/cm2時，經由2小時的萃取，則脫脂率(PW+SA)可由21.3wt%增加到74.95wt%；而有效擴散係數方可由3.1X10(-7)cm2/sec增加到1.1X10(-6)cm2/sec。另外，若超臨界流體中加入修飾劑，也可適度的提高萃取效率，其效果大小依序為甲醇＞丙銅＞戊坑＞不添加修飾劑，在添加甲醇的CO2超臨界流體萃取脫脂製程中，固定CO2流遠為1.5ml/min、溫度70℃、壓力150kg/cm2下，而修飾劑的流速為0.05ml/min，有效擴散係數可達3.9X10(-7)cm2/sec，經4小時萃取可達58.3wt%的萃取量。另外當較高含量的被萃取物存在基體時，在萃取過程中會殘留較大的孔徑，因此寸提高萃取效率。
第三個部份為利用分子模擬針對黏結劑分子結構的差異對氧化鋁表面的吸附與運動狀態進行研究。模擬結果發現，對於直鏈惋基分子而言，隨著分子量的增加，分子對於氧化鋁表面的吸附能力會較高，而nsc-的實驗結果也得到同樣趨勢。另外極性官能基分子較非極性官能基分子有著較強的吸附效果，而不同極性分于對氧化鋁表面的吸附能力大小依次為RCOOH＞RCOOCH3＞ROH＞RH。最後就直鏈與帶有支鏈烷基分子在氧 化鋁表面吸附能力的比較，不具支鏈烷基分子吸附能力較佳，其支鏈數目越多吸附能力越差。

This research included three parts, namely ( 1 ) study of the a mixture component on the quality of alumina parts by using an experimental design method, ( 2 ) study of an extraction debinding process by supercritical CO; fluid, ( 3 ) study of the absorption behavior of different binder on alumina surface by using molecular simulation.
The first part of this search was studying the influence of each formation component on the quality of injected alumina parts using a statistical analysis based on the McLean-Anderson design method. Fourteen different formulations were designed. The studied range of alumina ( AL ), polypropylene ( PP ), paraffin wax ( PW ), and stearic acid ( SA ) were 87 to 89, 5 to 9.25, 3 to 7.25, and 0.75 to 1.5 wt%, respectively. The green part density and its variation and the sintered bending strength of alumina compacts were measured by various equipments and analyzed statistically. The surface quality and the microstructure of the sintered parts were also examined. Experimental results indicated that the powder loading was the dorminant factor in determining the quality of test parts. At high powder loading ( AL > 87.8 wt% ), the order to increase the green part density was AL > SA > PW > PP. At low powder loading ( AL < 87.8 wt% ), the order to increase the density was SA > AL > PW > PP. The order to reduce the density variation of green parts was PP > PW > SA > AL. In enhancing the bending strength of sintered bodies, the order was SA > PP > PW > AL when AL > 88.5wt%, and AL > SA > PP > PW when AL < 88.5wt%. Longitudinal cracks of sintered parts were observed for formations with higher PP constant. Test samples with higher sintered strength (e.q. #- 12 ) showed smaller grain size than those with lower strength (e.q. #-3 ). The former contained both columnar and equaxial grains, while the latter contained most equaxial grains.
The second part of this research was investigating the extraction debinding of alumina parts by supercritical CO2 fluid. The effects of pressure ( P ), temperature ( T ), flow rate of supercritical fluid ( Q ), matrix pore size, and modifier on the binder ( PW + SA ) extraction rate were studied. The results indicated that increasing any one of these parameters ( P,T,Q ) would increase the extraction rate P was the most effective one. The debinding rate increased form 21.3 to 74.95 wt% for 2 hr extraction, and the effective diffusion coefficient raised form 3.1 X 10(-7) to 1.1 X 10(-6) cm2/s, when P increased form 150 to 300 kg/cm2, and Q=1.5 ml/min, T=70℃. Moreover, modifier could also enhance the extraction process. Methanoi was the most effect one in this study, followed by acetone and pentane. Finally parts with higher pore size exhibited higher debinding rate.
The third part of this research was investigating the effects of binder on its absorption behavior on alumina surface by using a molecular simulation technique. The simulated results indicated that the absorption energy was greater for linear molecular with higher molecular weight, which was consistent with DSC measurements. Moreover, polar nioleculars showed stronger interactions with alumina than nonpolar moleculars ; the order was RCOOH > RCOOCHa > ROH > RR Finally. branched moleculars showed less interactions than linear ones. The higher degree of branch was the less interacted with alumina.