目前本實驗室以燃燒合成法製備氮化鋁粉其技術已相當成熟，其合成所需之原料-鋁粉，規格為粒狀30~80 μm，純度為99.9 %，雖其純度高且反應性佳，但價格昂貴，為了降低生產成本增加本實驗室氮化鋁生產的競爭力並避免鋁粉來源被壟斷，本論文研究使用不同來源鋁粉以燃燒合成法合成氮化鋁，經探尋數種市售之鋁粉後，選擇兩種價位較低之鋁粉，即粒狀10~50 μm，純度99.0 %和粒狀10~30 μm，純度99.5 %。先前研究指出此兩種鋁粉易熔聚且產物氧含量高。本論文研究主要以粒狀10~50 μm之鋁粉為主，其餘兩種鋁粉為輔，利用不同的表面處理來探討合成反應之燃燒現象，同時使用SEM觀察其晶體成長以作為不同表面處理影響的佐證，並藉由改善氮氣流通通道來克服因堆積密度高所造成較差的反應性，最後合成出與舊有鋁粉的製程相近氧含量的氮化鋁，研磨前氧含量介於0.3~0.6 wt%，研磨至3~4 μm氧含量約在1.4 wt%。

The technique for synthesis of aluminum nitride powder by self-propagating high temperature synthesis (SHS) has been well developed in our laboratory. The mostly used aluminum powder for the synthesis has been sphere in shape with dimensions of 30~80 μm, and a purity of 99.9 %. This aluminum powder has a high purity and a good reactivity but is relatively costly. In order to reduce the production cost and avoid the monopolization of source of aluminum powder, we searched for other sources for aluminum powder. Two different types of aluminum powder were investigated for synthesis of aluminum nitride: (1) irregular particle, 10~50 μm on average and 99.0 % purity; (2) irregular particle, 10~30 μm and 99.5 % purity. Previous studies indicate that these two type of aluminum powder can easily form aggregates during synthesis reaction and oxygen contents of the products are high. This thesis research focused on synthesis of aluminum nitride powder by using the aluminum powder with 10~50 μm in size, and the results were compared with experimental results of other aluminum powders. The combustion phenomena were found to be related to different surface modification of the aluminum powders, and the results were also proved by SEM observation. Beside, the poor reactivity due to high packing density of the aluminum powder was improved by setting an porous aluminum tube in the reactant compact. Using the aluminum powder and the synthesis technique developed in the present study, the product has an oxygen content of 0.3~0.6 wt% before milling, and about 1.4 wt% after milling.

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