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    • 99. 发明公开
    • 붕소 제거를 위한 마그네슘-알루미늄 이금속산화물의 제조방법
    • 制备用于去除硼的MG-AL二元氧化物的方法
    • KR1020130074404A
    • 2013-07-04
    • KR1020110142461
    • 2011-12-26
    • 재단법인 포항산업과학연구원
    • 문정기곽명화윤영기
    • C04B35/581C02F1/28C04B35/64
    • C04B35/58C02F1/281C04B35/64C04B2235/3852
    • PURPOSE: A manufacturing method of magnesium-aluminum bimetallic oxide for removing boron is provided to use an optimal ratio of magnesium nitrate and aluminium nitrate, thereby synthesizing Mg-Al bimetallic oxide with high de-boronation efficiency. CONSTITUTION: A manufacturing method of magnesium-aluminum bimetallic oxide for removing boron comprises following steps. (i) The caustic soda is added in the mixture of aluminium nitrate and magnesium nitrate. The mixture is heated and dried. Precipitation is obtained. And (ii) the precipitate is baked. The molar ratio of the aluminium nitrate and magnesium nitrate is 2:1. The temperature of the baking step is 60 to 400°C. [Reference numerals] (AA) 0.1M Mg(NO3)2 + 0.05M AI(NO3)3 fluid; (BB) Heating at 45°C; (CC) Curing for two hours at 85°C; (DD) Centrifugation/ cleaning; (EE) Drying; (FF) Calcinating
    • 目的:提供用于除去硼的镁 - 铝双金属氧化物的制造方法,以使用硝酸镁和硝酸铝的最佳比例,从而合成具有高脱硼效率的Mg-Al双金属氧化物。 构成:用于除去硼的镁 - 铝双金属氧化物的制造方法包括以下步骤。 (i)将苛性钠加入到硝酸铝和硝酸镁的混合物中。 将混合物加热并干燥。 获得沉淀。 和(ii)沉淀物被烘烤。 硝酸铝和硝酸镁的摩尔比为2:1。 烘烤步骤的温度为60〜400℃。 (标号)(AA)0.1M Mg(NO 3)2 + 0.05M AI(NO 3)3流体; (BB)在45℃加热; (CC)在85℃下固化2小时; (DD)离心/清洗; (EE)干燥; (FF)煅烧
    • 100. 发明公开
    • 열전도도가 우수한 지르코늄디보라이드-실리콘카바이드 복합소재의 제조방법
    • 具有高导热性的二氧化碳 - 碳化硅复合材料的制造方法和由该方法制造的二氧化硅 - 碳化硅复合材料
    • KR1020130071020A
    • 2013-06-28
    • KR1020110138312
    • 2011-12-20
    • 한국세라믹기술원
    • 김성원이성민김형태김경자
    • C04B35/58C04B35/565C04B35/645
    • C04B35/58C04B35/565C04B35/645C04B2235/5454C04B2235/9607
    • PURPOSE: A manufacturing method of zirconium diboride-silicon carbide composite is provided to improve the contiguity and thermal conductivity of silicon carbide by suppressing the grain growth of zirconium diboride. CONSTITUTION: A manufacturing method of zirconium diboride-silicon carbide composite includes the following steps of: mixing zirconium diboride, nano-silicon carbide of the average diameter of 10-200nm, and a dispersing agent, and wet-pulverizing the mixture; drying the wet pulverized product; arranging the dried product in a high temperature and pressure sintering furnace, and heating to a sintering temperature of 1800 to 2200°C; and pressurizing and sintering the dried product at the sintering temperature. The average diameter of the nano-silicon carbide is 1/10 or less of the average diameter of the zirconium diboride in the mixing step. The zirconium diboride and the nano-silicon carbide are mixed at the ratio of 50-95 volume% : 5-50 volume%. 0.1-10 parts by weight of the dispersing agent per 100 parts by weight of the total content of the zirconium diboride and the nano-silicon carbide is mixed in the mixture. [Reference numerals] (AA) Thermal conductivity(W/mK); (BB) Measurement temperature(°C); (CC) Comparative example; (DD) Example 2; (EE) Example 1
    • 目的:提供二硼化锆 - 碳化硅复合材料的制造方法,以通过抑制二硼化锆的晶粒生长来改善碳化硅的邻接性和导热性。 构成:二硼化锆 - 碳化硅复合锆的制造方法包括:将二硼化锆,平均直径为10-200nm的纳米碳化硅和分散剂混合,并将混合物湿式粉碎; 干燥湿粉碎产品; 将干燥产物置于高温高压烧结炉中,加热至1800〜2200℃的烧结温度; 并在烧结温度下加压和烧结干燥的产品。 在混合步骤中,纳米碳化硅的平均直径为二硼化锆的平均直径的1/10以下。 二硼化锆和纳米碳化硅以50-95体积%:5-50体积%的比例混合。 相对于100重量份的二硼化锆和纳米碳化硅的总量,分散剂0.1-10重量份混合在混合物中。 (标号)(AA)导热系数(W / mK); (BB)测量温度(℃); (CC)比较例; (DD)实施例2; (EE)实施例1