(中南大學 冶金科學與工程學院, 長沙 410083)
摘 要: 研究了鋅蒸氣高溫氣相氧化條件對氧化鋅結晶形貌的影響結果。結果表明： 氣相氧化法制備的氧化鋅有無定形、 顆粒狀、 單針狀、 四針狀、 多針狀等5種典型的結晶形貌； 這些結晶形貌與原料鋅粉的粒度及表面狀態(tài)沒有直接聯(lián)系， 但都強烈地依賴于鋅蒸氣氧化時的物理化學環(huán)境；在不同的氧分壓下， 鋅蒸氣具有不同的氧化行為， 由此導致了不同形貌的氧化鋅結晶； 通過改變制備條件可以有效地調(diào)控氧化鋅的結晶形貌。
關鍵字: 氣相氧化； 氧化行為; 氧化鋅； 結晶形貌
（College of Metallurgical Science and Technology,
Central South University, Changsha 410083, China）
Abstract: The effects of conditions of oxidizing zinc vapor at high temperature on the crystal morphologies of ZnO were investigated. The results show that there are five typical morphologies: amorphous, granular, needle, tetrapod and multipod-like ZnO, depending on the physical chemical conditions of oxidizing zinc vapor and having no direct relations with particle size and surface conditions of zinc powders, the raw materials. The behavior of oxidizing zinc vapor varies with the oxygen partial pressure, which leads to producing ZnO crystals of different morphologies that can be controlled by the change of preparing conditions.
Key words: vapor oxidizing; oxidization behavior; ZnO; crystal morphology
