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    자발연소반응에 의한 세라믹 분말의 합성방법
    1.
    发明公开
    자발연소반응에 의한 세라믹 분말의 합성방법 失效
    通过自发燃烧反应合成陶瓷粉末的合成方法

    公开(公告)号：KR1020000008664A

    公开(公告)日：2000-02-15

    申请号：KR1019980028586

    申请日：1998-07-15

    Applicant: 한국과학기술연구원

    Inventor： 김구대 ,  김재동 ,  문지웅 ,  김창은

    IPC: C04B35/64 ,  C04B35/01 ,  C04B35/56 ,  C04B35/622

    CPC classification number: C01G45/1264 ,  C01G51/68

    Abstract: PURPOSE: A process for preparing ceramic powder by dissolving an oxide and a carbide or optionally metal and soluble metal salt, adding glycine, and calcining is provided which makes possible to produce high purity ceramic powder quickly and economically. CONSTITUTION: An oxide and a carbide which are stable in the atmosphere and well soluble in nitric acid or optionally metal and metal salt which are well soluble in water are dissolved in nitric acid, added with glycine and calcined to give ceramic power such as (La, Sr)MnO3, (La, Sr)CoO3, (La, Sr)CoMnO3 or (La, Sr)CoFeO3 crystalline ceramic power. The oxide is selected from La2O3, MnO2 or Fe3O4 and its mixture, the carbide is FeCO3 or SrCO3 and metal is cobalt. For an example, 123.8g La2O3, 28.05g SrCO3, 87.81g MnO2 are dissolved in 420ml nitric acid and 180ml hydroperoxide and added with 300g glycine as fuel in changing a mole ratio of glycine and cation to 0.5, 1. 2. 3. and 4 to give a solution, which is calcined at below 1,000°C in a preheated reactor to give a final product. In the mole ratio of glycine and cation of 2,3, spontaneous combustion reaction is continued furiously to give crystalline ceramic power of (La, Sr)MnO3.

    Abstract translation: 目的：提供通过溶解氧化物和碳化物或任选的金属和可溶性金属盐，加入甘氨酸和煅烧来制备陶瓷粉末的方法，其可以快速且经济地制备高纯度陶瓷粉末。 构成：在大气中稳定且易溶于硝酸或可溶于水的金属盐和金属盐的氧化物和碳化物溶解在硝酸中，加入甘氨酸并煅烧得到陶瓷功率，例如（La ，Sr）MnO 3，（La，Sr）CoO 3，（La，Sr）CoMnO 3或（La，Sr）CoFeO 3结晶陶瓷功率。 氧化物选自La2O3，MnO2或Fe3O4及其混合物，碳化物为FeCO3或SrCO3，金属为钴。 例如，将123.8g La 2 O 3，28.05g SrCO 3，87.81g MnO 2溶解在420ml硝酸和180ml氢过氧化物中，并加入300g甘氨酸作为燃料，将甘氨酸和阳离子的摩尔比改为0.5,1.2,3和 得到溶液，其在预热的反应器中在低于1000℃下煅烧，得到最终产物。 甘氨酸和阳离子的摩尔比为2,3，自发燃烧反应持续剧烈，得到（La，Sr）MnO 3的结晶陶瓷功率。

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