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    • 1. 发明授权
    • 단분산 구상 바륨티타네이트 미립자의 제조방법
    • 단분산구상바륨티타네이트미립자의제조방단
    • KR100417694B1
    • 2004-02-11
    • KR1019990059907
    • 1999-12-21
    • 재단법인 포항산업과학연구원
    • 이석근박병학
    • C01F11/00
    • PURPOSE: Provided is a method for preparing monodisperse globular barium titanate minute particles whose average diameter is less than 1μm so that the particles may be suitable to uses without cohesion. Whereby, they can be used as powdered raw materials for electric functional materials, cosmetics, paints, artificial jewels or fillers. CONSTITUTION: A method for preparing monodisperse globular barium titanate minute particles comprises the steps of: (i) a first step to prepare octanol solution by melting barium titanate complex alkoxide 0.04-0.45 mol/L in octanol 45-65 volume%; (ii) a second step to mix acetonitrile 25-45 volume% with the octanol solution after heating to 21-60deg.C for the mixed solution to reach 90 volume%; (iii) a third step to add a solution prepared by melting water 0.04-0.45mol/L in ethanol 10 volume% to prepare a reacted solution; and (iv) a fourth step to grow barium titanate minutes particle nuclei generated in the early step of forming the reacted solution while stirring at normal temperature for 1 hour.
    • 目的:提供一种制备平均直径小于1微米的单分散球状钛酸钡微粒的方法,使得该微粒可适用于没有内聚力的用途。 因此,它们可以用作电功能材料,化妆品,油漆,人造珠宝或填料的粉状原料。 构成:制备单分散球状钛酸钡微粒的方法包括以下步骤:(i)第一步,通过熔化辛醇中的钛酸钡络合物醇盐0.04-0.45mol / L在45-65体积%的辛醇中制备辛醇溶液; (ii)在混合溶液加热到21-60℃后,将乙腈25-45体积%与辛醇溶液混合至第二步以达到90体积%; (iii)第三步,加入通过在10体积%的乙醇中溶解水0.04-0.45mol / L制备的溶液以制备反应溶液; 和(iv)第四步,在常温下搅拌1小时的同时,在形成反应溶液的早期步骤中生成钛酸钡分钟颗粒核。
    • 2. 发明公开
    • 구형의 수산화알루미늄 입자 제조방법
    • 球形氢氧化铝颗粒的制备
    • KR1020030018819A
    • 2003-03-06
    • KR1020010053387
    • 2001-08-31
    • 주식회사 포스코재단법인 포항산업과학연구원
    • 이석근박병학김선욱
    • C01F7/02
    • C01F7/02C01P2004/32C01P2004/62
    • PURPOSE: Provided is a preparation method of mono-dispersed aluminum hydroxide(Al(OH)3) particles with spherical shape, submicron size and narrow particle size distribution by hydrolyzing aluminum alkoxide in a mixed solvent unlike conventional pure solvent. CONSTITUTION: The spherical aluminum hydroxide(
    • 目的:提供一种单分散的氢氧化铝(Al(OH)3)颗粒,其具有球形,亚微米尺寸和窄粒度分布,通过与常规纯溶剂不同的方式在混合溶剂中水解醇铝。 构成:球状氢氧化铝(<= 1微米)颗粒通过以下步骤制备:(i)将0.12-0.55mol / L的烷氧基铝溶解在40-60体积%(基于辛醇,二甲基甲酰胺的混合溶剂 亚砜和乙醇)辛醇; (ii)与步骤(i)的溶液混合后,将30-50体积%的二甲基亚砜加入溶液的90体积%(基于混合溶剂); (iii)将步骤(ii)的溶液与从溶解10体积%(基于混合溶剂)的乙醇中得到的溶剂混合在0.06-0.30摩尔/升的水中; (iv)在步骤(iii)的溶液中水解Al-醇盐如甲醇铝,乙醇盐,丙醇盐等,形成Al(OH)3的核; (v)搅拌溶液并任选加热至30-60℃以生长Al(OH)3颗粒; (vi)通过离心从溶液中分离出Al(OH)3颗粒; (vii)在烘箱或真空干燥器中在200℃下干燥。
    • 4. 发明授权
    • 고체전해질을이용한후막형이산화탄소가스센서및그제조방법
    • 采用固体电解质的厚膜型二氧化碳气体传感器及其制造方法
    • KR100305698B1
    • 2001-12-28
    • KR1019980046220
    • 1998-10-30
    • 재단법인 포항산업과학연구원
    • 유도준박병학하창호
    • G01N27/406
    • 본 발명은 이산화탄소의 가스농도를 알아내는 후막형 이산화탄소의 가스센서 제조방법 및 그 센서구조에 관한 것으로, 알루미나 기판을 중심으로 저면 중앙에는 히터를 인쇄하되, 이 히터는 Pt 및 Ru0
      2 와 같은 히터용 페이스트를 스크린 인쇄기로서 10㎛정도로 인쇄하고 건조시키는 공정과, 이후 알루미나 기판의 양면 양측에는 두 영역으로 나누어 이에 각각의 Au 전극을 상기 히터를 인쇄하는 방법과 동일한 방법 즉 스크린 인쇄기로서 약 10㎛정도로 인쇄하고 건조시키는 공정과, 이후 상기 건조완료된 기판을 870℃에서 10분간 열처리 하되, 상면 일측의 Au 전극 위에만 탄산염(LiCO
      3) 을 인쇄하고 건조한 후 탄산염의 융점 부위인 650℃에서 3분간 열처리하여 탄산염이 Au 전극에 융착되도록 하는 공정과, 상기 알루미나 기판의 상면 중앙에 나시콘등의 고체� ��해질을 스크린 인쇄기로서 약 10㎛정도로 인쇄하고 건조시킨 후 탄산염의 융점보다 낮은 400℃에서 30분간 열처리하여 제조하는 방법과,
      고체전해질을 이용한 이산화탄소 가스센서를 형성함에 있어서, 알루미나 기판을 중심으로 상하면 양측에는 통전성이 좋은 각각의 금 전극을 위치시키고, 상기 알루미나 기판의 저면 중앙에는 히터를 설치하였으며, 상기 알루미나 기판의 상면 중앙에는 나시콘을 부착하되, 상기 나시콘의 일측 저부와 상부에 위치한 일측 금 전극의 사이에는 탄산염을 스크린 인쇄법으로 적층시켜서 된 것이다.
    • 5. 发明公开
    • 마그네시아 부분안정화 지르코니아 소결체
    • ZIRCONIA烧结紧凑部分稳定MAGNESIA
    • KR1020010064094A
    • 2001-07-09
    • KR1019990062215
    • 1999-12-24
    • 재단법인 포항산업과학연구원
    • 정대식박병학
    • C22C1/04
    • PURPOSE: A zirconia sintering compact partially stabilizing magnesia is provided which has superior physical properties such as heat impact property, response property and change of electromotive force by adding constituents having superior properties sensing oxygen in molten steel to a magnesia zirconia solid electrolyte composition. CONSTITUTION: The zirconia sintering compact partially stabilizing magnesia comprises 0.05 to 0.2 wt.% of alumina for the total amount of sintering compact, 0.1 to 0.2 wt.% of silicon oxide for the total amount of sintering compact, 0.02 to 0.05 wt.% of iron oxide for the total amount of sintering compact, 0.02 to 0.05 wt.% of titanium oxide for the total amount of sintering compact, 0.005 to 0.01 wt.% of calcium oxide for the total amount of sintering compact, 0.005 to 0.01 wt.% of calcium carbonate for the total amount of sintering compact, 0.001 to 0.002 wt.% of lithium carbonate for the total amount of sintering compact, and 0.001 to 0.002 wt.% of yttrium oxide for the total amount of sintering compact.
    • 目的:提供一种部分稳定的氧化镁的氧化锆烧结体,其具有优异的物理性能,如热冲击性能,响应性能和电动势的变化,通过将具有优异性能的钢液中的氧气的成分添加到氧化镁氧化锆固体电解质组合物中。 构成:氧化锆烧结体部分稳定的氧化镁包含0.05〜0.2重量%的氧化铝,烧结体的总量为0.1〜0.2重量%,烧结体的总量为0.1〜0.2重量%的氧化硅,0.02〜0.05重量% 烧结粉末总量为氧化铁,烧结体总量为0.02〜0.05重量%,氧化钙总量为0.005〜0.01重量%,0.005〜0.01重量% 的碳酸钙,烧结体的总量为0.001〜0.002重量%,烧结体的总量为0.001〜0.002重量%,烧结体总量为0.001〜0.002重量%的氧化钇。
    • 6. 发明公开
    • 단분산 구상 알루미나 미립자의 제조방법
    • 制备单体氧化铝颗粒的方法
    • KR1020010063051A
    • 2001-07-09
    • KR1019990059906
    • 1999-12-21
    • 재단법인 포항산업과학연구원
    • 이석근박병학
    • C01F7/02
    • C01F7/30C01P2004/32C01P2004/52C01P2004/64
    • PURPOSE: Provided is a method for preparing monodisperse alumina minute particles whose average diameter is less than 1μm so that the particles may be suitable to uses without cohesion. Whereby, they can be used as powdered raw materials for electric functional materials, cosmetics, paints, artificial jewels or fillers. CONSTITUTION: A method for preparing monodisperse alumina minute particles comprises the steps of: (i) a first step to prepare octanol solution by melting aluminum alkoxide 0.05-0.25 mol/L in octanol 50-70 volume%; (ii) a second step to add a solution prepared by melting water 0.04-0.30mol/L in dimethylsulfoxide 30-10 volume% to the octanol solution after heating to 20-60deg.C to prepare a reacted solution; and (iii) a third step to grow alumina minutes particle nuclei generated in the early step of forming the reacted solution while stirring at normal temperature for 1 hour.
    • 目的:提供平均粒径小于1μm的单分散氧化铝微粒的制造方法,可以适用于没有内聚的用途。 因此,它们可以用作电功能材料,化妆品,油漆,人造珠宝或填料的粉末原料。 构成:制备单分散氧化铝微粒的方法包括以下步骤:(i)通过在50-70体积%的辛醇中溶解0.05-0.25mol / L的烷醇铝制备辛醇溶液的第一步骤; (ii)第二步骤,在加热至20-60℃之后,将通过将0.04-0.30mol / L二氯甲烷溶液30-10体积%溶解在辛醇溶液中而制备的溶液以制备反应溶液; 和(iii)在常温下搅拌1小时的同时在形成反应溶液的早期步骤中生长氧化铝分钟颗粒核的第三步骤。
    • 7. 发明公开
    • 강관 제조용 빌렛의 이송레일 제조방법
    • 钢管制造输送轨道的方法
    • KR1020010055787A
    • 2001-07-04
    • KR1019990057097
    • 1999-12-13
    • 재단법인 포항산업과학연구원철강융합신기술연구조합
    • 이강호박병학장재하
    • C04B33/04
    • B28B1/265B22D11/122C04B35/10C04B35/64C04B2235/606C04B2235/656
    • PURPOSE: A method for manufacturing a transferring rail of a billet for a steel pipe is provided by which produced rail is not damaged by high temperature and securely and smoothly transfers the billet. CONSTITUTION: The method comprises steps of: (i) mixing 10-30% of bauxite prepared by mixing 10-50% of silica with 50-90% of alumina, 15-35% of shale, 10-40% of chamotte, 30-40% of clay and 5-15% of alumina; (ii) adding 10-30% of water to the mixture of the step (i) and mixing them in a vacuum mixer for 4-6 times to prepare the bubbles removed uniform mass; (iii) putting the prepared mass in a mold manufactured to be a shape of the rail and applying pressure of about 0.1-0.5 ton to the mass to prepare a molded body; (iv) after drying the molded body at room temperature for 3-7 days, drying it in a drying chamber at a temperature of 80-120 deg.C for 2-4 days; (v) after fixing the form of the molded body, calcining it in a gas or electric furnace at a temperature of 1,200-1,400 deg.C for 1-7 hours; and (vi) slowly cooling the molded body of the step (v) for about 2 days, precisely processing the molded body to have the same outside diameter as that of the billet to be transferred.
    • 目的:提供一种用于制造用于钢管的钢坯的输送轨的方法,通过该方法,生产的钢轨不被高温损坏,并且可靠且平稳地转移钢坯。 方法:该方法包括以下步骤:(i)混合10-30%的铝土矿混合10-50%的二氧化硅与50-90%的氧化铝,15-35%的页岩,10-40%的防腐剂,30 -40%的粘土和5-15%的氧化铝; (ii)向步骤(i)的混合物中加入10-30%的水,并将其在真空混合器中混合4-6次以制备除去均匀的气泡; (iii)将准备好的物料放在制造成轨道形状的模具中并向该组合物施加约0.1-0.5吨的压力以制备成型体; (iv)在室温下干燥成型体3-7天后,在80-120℃的干燥室中干燥2-4天; (v)固定成型体的形状后,在1200〜1400℃的气体或电炉中煅烧1-7小时; 和(vi)将步骤(v)的成型体缓慢冷却约2天,精确地加工成型体以具有与要转移的坯料相同的外径。