| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | 가속도 센서용 압전 세라믹스 조성물 | KR1020010083425 | 2001-12-22 | KR1020030053249A | 2003-06-28 | 황순철; 김선욱; 김태칠 |
| PURPOSE: A piezoelectric ceramic composition of the αPb(sB1/3Nb2/3)O3 - βPbZrO3 - γPbTiO3 system is provided for use as acceleration sensors requiring high piezoelectric voltage constant and high temperature stability. CONSTITUTION: The piezoelectric ceramic composition is expressed by a formula of αPb(Sb1/2Nb1/2)O3 - βPbZrO3 - γPbTiO3 + xMnO2 + yLa2O3, wherein α, β, γ, x and y are in the ranges of 0.01<=α <=0.10 mole, 0.30<=β<=0.60 mole, 0.30<=γ<=0.60 mole, 0.1<=x<=1.0 wt.%, and 0.1<=y<=0.5 wt.%, respectively. The piezoelectric powder for piezo-transformer used in acceleration sensor is prepared by mixing PbO, ZrO2, TiO2, Sb2O3, Nb2O5, MnO2 and La2O3 in the proportion corresponding to the above composition, and calcining at 700-1000deg.C for 1-5hrs. | ||||||
| 142 | 고주파 레조네이터용 세라믹 조성물 | KR1020010061851 | 2001-10-08 | KR1020030029371A | 2003-04-14 | 김종선; 최순목; 류주현; 윤광희; 민석규 |
| PURPOSE: Provided is a composition of PbTiO3-based ceramics for high frequency having high Curie temperature(>=300deg.C) and high dynamic ratio(D.R). The resultant composition is applied to TV, keyboard, cell phones, sound facilities, etc. CONSTITUTION: The ceramic composition for microwave resonators is expressed by a formula of Pb1-3x/2Lax£(Mn1/3Sb2/3)yTi1-y|O3, wherein x and y are in the ranges of 0.03<=x<=0.10 mole and 0.01<=y<=0.05 mole. Also, excess MnO2 is added to the composition for improving mechanical quality factor(Qm), resulting in high dynamic ratio, which is expressed by the formula of Pb1-3x/2Lax £(Mn1/3Sb2/3)y Ti1-y|O3 + zMnO2, wherein x, y and z are in the ranges of 0.03<=x<=0.10 mole, 0.01<=y<=0.05 mole, and 0.05<=z<=0.2 wt.%. | ||||||
| 143 | 위상변환기용 유전체 세라믹 조성물 | KR1020010038006 | 2001-06-29 | KR1020030002412A | 2003-01-09 | 홍국선; 조서용; 김동완; 이중건; 김정렬 |
| PURPOSE: A dielectric ceramic composition comprising MgTiO3 as a main component is provided for use as phase shifters operated at the microwave region, requiring dielectric constant(15-17), quality factor(>=70000), and high mechanical strength. CONSTITUTION: The dielectric ceramic composition for phase shifters comprises MgTiO3 as a main component, 0.01-7wt.%(based on MgTiO3) of one or more of CuO and ZnO as sintering aids for lowering sintering temperature(<=1400deg.C), and 1-7wt.%(based on MgTiO3) of Al2O3 as a grain growth inhibitor for preventing abnormal grain growth. | ||||||
| 144 | 적층 세라믹 콘덴서 용 세라믹 슬러리 제조 방법 | KR1020010032429 | 2001-06-11 | KR1020020094329A | 2002-12-18 | 최치준 |
| PURPOSE: A preparation method of ceramic slurry for multilayer ceramic condenser is provided, which improves electrical property and sintered density, and prevents segregation of additives by improving mixing and dispersing methods of ceramic raw materials. CONSTITUTION: A preparation method of dielectric ceramic slurry is characterized by dispersing at least two of auxiliary components(<50wt.%) including Y, Cr, Mn, W, Nd, Nb, Co, etc. without agglomeration prior to mixing with main components(>=50wt.%) including one or more of BaTiO3, (Ba, Ca)(Ti, Zr)O3 and (Ba, Ca, Sr )(Ti, Zr)O3. The dielectric ceramic slurry is prepared by the following steps of: (i) grouping auxiliary components by surface area(or particle size, mechanical fracture strength, morphology, etc.); (ii) wet-milling each group with respective solvent and dispersant, differing from kinds and amounts of dispersants, and dispersion condition; (iii) adding a binder to the milled slurry, and wet-milling; (iv) mixing main components, ground and dispersed, with prepared auxiliary components. | ||||||
| 145 | 유전체 자기 조성물, 이를 이용한 자기 커패시터 및 그 제조방법 | KR1020010062837 | 2001-10-12 | KR1020020084675A | 2002-11-09 | 정승교; 후지노시게히로; 히라이노부타케; 오준록; 장병규 |
| PURPOSE: Provided are dielectric ceramic composition and ceramic capacitors having high relative dielectric constant, large Q value, and low temperature coefficient of resonant frequency in the high frequency region. Also, the composition enables low temperature sintering so that the production cost is saved. CONSTITUTION: The microwave dielectric ceramic composition comprises the components of: xBaO-yNd2O3-zTiO2 (0.05<=x<=0.30, 0.05<=y<=0.20, 0.65<=z<=0.75, and x+y+z=1) as main components; 0.1-15wt.% of PbO, 0.05-15wt.% of Bi2O3 and 0.5-25wt.% of glass based on ZnO-SiO2 or Li2O-Al2O3-SiO2 as auxiliary components; and optionally 0.005-2.5wt.% of at least one rare earth oxide selected from Y2O3, Ho2O3, Dy2O3, Yb2O3 and Ce2O3, up to 3wt.% of PbO or Bi2O3, and 0.005-2pts.wt.(based on 100pts.wt. of the dielectric composition) of Al2O3. The ceramic capacitors are produced by pressing the above composition into a bulk or sheet shape, forming an electrode(2), made of non metals(Cu, Ni, W, Mo, etc.) and carbon materials, on a compact(1), and sintering at 850-1050deg.C. | ||||||
| 146 | 고출력 압전 디바이스용 압전 세라믹 조성물, 이를 이용한 압전 변압기 및 그 구동방법 | KR1020010018269 | 2001-04-06 | KR1020020078222A | 2002-10-18 | 임기조; 이종섭 |
| PURPOSE: Provided is a piezoelectric ceramic composition of the xPbZrO3 + yPbTiO3 + zPbMn1/3Nb1/3Sb1/3O3 system for high power piezoelectric device. The composition has high mechanical quality factor(Qm), electromechanical coupling coefficient(kp), and piezoelectric strain constant(d33). CONSTITUTION: The piezoelectric ceramic composition contains xPbZrO3 + yPbTiO3 + zPbMn1/3Nb1/3Sb1/3O3 system(0.38<=x<=0.51mole, 0.40<=y<=0.51mole and 0.05<=z<=0.51mole) as a main component and aCr2O3, aNb2O3, aNiO, aMnO2, aMgO or aFe2O3(0<=a<=1wt.%) as an auxiliary component. The piezoelectric transformer has a disk shape, 1-3mm thickness and 65-75kHz resonance frequency, The electrode of piezoelectric transformer has a bottom electrode(7), and an upper electrode dividing ring(A) and disk(B)-shaped electrodes, wherein the size ratio of a ring-shaped electrode(5) and a disk-shaped electrode(6), A/B, is 0.8-10. | ||||||
| 147 | 마이크로파용 유전체 세라믹 조성물 | KR1020010014667 | 2001-03-21 | KR1020020074714A | 2002-10-04 | 김현재; 윤석진; 최지원; 강종윤; 하종윤 |
| PURPOSE: Provided is a microwave dielectric ceramic composition of the (1-x)(Al1/2Ta1/2)O2-xTiO2 system having high dielectric constant, large Q value, and temperature coefficient of resonant frequency which can be turned to zero. CONSTITUTION: The dielectric ceramic composition is expressed by the formula of (1-x)(Al1/2Ta1/2)O2-xTiO2, wherein x is in the range of 0.1<=x<=0.5. Materials in this composition range possess dielectric constant of 14.1-45.5, Qxfo of 6700-78690 GHz, and temperature coefficient of resonant frequency(TCF) of -31.7 to +99.9ppm/deg.C. The composition is used for mobile telecommunication devices such as resonator, duplex, filter, etc. | ||||||
| 148 | 내식성 세라믹 재료, 그 제조 방법 및 반도체 제조용 제품 | KR1020020004090 | 2002-01-24 | KR1020020062843A | 2002-07-31 | 고바야시히로미치 |
| PURPOSE: To provide a corrosion resistant suitable for use such as a product for manufacturing a semiconductor which is to be exposed to corrosive material, having high corrosion resistance, reduced in generation of particles caused by exposure to corrosive material, and hardly chipping or cracking at the time of grinding. CONSTITUTION: The corrosion resistant ceramic material of ceramic containing silicon atoms contains each metallic element in the rate of <=10 wt.ppm except metallic elements constituting a sintering aid, and silicon atoms. | ||||||
| 149 | 마이크로파 유전체 세라믹 조성물 | KR1020000079896 | 2000-12-21 | KR1020020050779A | 2002-06-27 | 이경호; 안달; 박찬식 |
| PURPOSE: A dielectric ceramic composition for microwave devices, (1-x)PbWO4 + xTiO2 (0<=x<=0.3), is provided, which has high quality factor(Qxfo), dielectric characteristics, low temperature coefficient of resonance frequency, and low sintering temperature. CONSTITUTION: The dielectric ceramic composition for microwave devices such as patch antenna, filter, duplexer, etc. comprises (1-x)PbWO4 + xTiO2 (0<=x<=0.3) as main component and 1-3wt.%(based on the composition) of CuO and B2O3 to improve sintering property and quality factor(Qxfo). The characteristics of resultant composition are as follows: (a) a dielectric constant is 21-26, (b) Qxfo>=30000, (c) a temperature coefficient of resonance frequency is a controllable value on the base of 0ppm/deg.C, and (d) a sintering temperature is 850deg.C. | ||||||
| 150 | 초미립 유전체 세라믹스의 제조방법 | KR1020000056463 | 2000-09-26 | KR1020020024690A | 2002-04-01 | 김병국; 김진상 |
| PURPOSE: Provided is a preparation method of dielectric ceramics with ultrafine particles and high density at low temperature by adding CuO and rare earth metal oxide to BaTiO3, and sintering in O2 atmosphere. CONSTITUTION: Ultrafine dielectric ceramics are prepared by the following steps: wet ball-milling powders of raw materials, BaTiO3, CuO and RE3O3, for a slurry of BaTiO3 + xCuO + yRE2O3, where 0.00<x<=0.05, 0.00<y<=0.05, and RE is at least one rare earth element selected from the group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Ho, Er and Yb; calcining at 900-1100deg.C for 0.5-2hrs. in air atmosphere; forming; sintering by heating at 360deg.C/hr to 1100deg.C in O2 atmosphere. The flow of O2 gas is over 1.1times(per min.) and preferably over 3.2times(per min,) of the volume of furnace. The resultant dielectric ceramics have 90-100nm of particle size and 5.2-5.8g/cm¬3 of density. | ||||||
| 151 | 초미립 유전체 세라믹스의 제조방법 | KR1020000055161 | 2000-09-20 | KR1020020022386A | 2002-03-27 | 김병국; 김진상 |
| PURPOSE: Provided is a preparation method of ultrafine and high density dielectric ceramics at low temperature by adding rare earth oxide and Cu3TiO4 to BaTiO3 and sintering in an oxygen atmosphere. CONSTITUTION: The preparation method is as follows: wet ball-milling raw material powders(>99.9% of purity), BaTiO3, Cu3TiO4 and RE2O3, for a slurry of BaTiO3 + xCu3TiO4 + yRE2O3, where 0.00< x <=0.05, 0.00< y <=0.05, and Re is at least one rare earth element selected from the group consisting of La, Pr, Nd, Sm, Eu, etc.; drying and calcining at 900-1100deg.C I for 0.5-2hrs. in air; forming and sintering at 1100deg.C in O2 atmosphere. the resultant BaTiO3-based dielectric ceramics have 90-100nm of diameter and 5.2-5.8g/cm¬3 of density. | ||||||
| 152 | 마이크로파용 고유전율 유전체 세라믹 조성물 | KR1020000054894 | 2000-09-19 | KR1020020022214A | 2002-03-27 | 박재관; 박재환; 김병국; 김윤호; 우창수; 조운조 |
| PURPOSE: Provided is a PbO-ZrO2-CaO-TiO2 system dielectric ceramic composition with high dielectric constant(more than 100) for microwave products of small size and light weight such as filters, duplexer and resonators. CONSTITUTION: The microwave dielectric ceramic composition is represented by the formula, (1-y)(Pb1-xCaxZr0.9Ti0.1)O3 + ySrZrO3 (0.3<=x<=0.4, 0.3<=y<=0.4). The composition is obtained by the following step: preparing PbZrO3-CaTiO3 composition; adding SrCO3, ZrO2 in a ratio corresponding to the formula, and CeO2 in a mole fraction of 0.003-0.005 for lowering sintering temperature and improving quality factor; ball-milling, drying, and sintering at 1300-1400deg.C. | ||||||
| 153 | 고전압 분압 및 전류 공급용 전왜 세라믹스 조성물 및 제조방법 | KR1020000041515 | 2000-07-20 | KR1020020008235A | 2002-01-30 | 하복남; 정영호; 류주현; 윤현상 |
| PURPOSE: An electostrictive ceramics composition in the tertiary system Pb(Zn1/3Nb2/3)O3-BaTiO3-PbTiO3 for high voltage distribution and current supply devices is provided, which has high dielectric constant and temperature stability of dielectric constant, and decreases the size of conventional wound-transformers. CONSTITUTION: The preparation method of the composition, PZN-BT-PT, is as follows: weighing components, PbO, ZnO, Nb2O3, BaCO3 and TiO3, forming LTc and HTc ceramics, where the LTc ceramic is represented by the formula 0.55Pb(Zn1/3Nb2/3)O3 - 0.3BaTiO3 - 0.15PbTiO3, and the HTc ceramic is represented by the formula, 0.8Pb(Zn1/3Nb2/3)O3 - 0.1BaTiO3 - 0.1PbTiO3; ball-milling each composition of LTc and HTc ceramic for 24hrs. in a medium of acetone; drying and sintering at 900deg.C for 6hrs.; mixing LTc with HTc ceramic to be the formula of (1-x)LTc - xHTc, where x=0.4, 0.5, 0.6; ball-milling for 15hrs.; drying and forming under 1ton/cm¬2 of pressure; and sintering at 1075deg.C for 1hrs. The resultant ceramics composition has 6800 of dielectric constant, 10% of temperature characteristics of dielectric constant when x=0.5. | ||||||
| 154 | 다공성 (Ba,Sr)TiO3 제조방법 | KR1020010045273 | 2001-07-23 | KR1020010086419A | 2001-09-12 | 김준규 |
| PURPOSE: Provided is a preparation method of porous (Ba,Sr)TiO3 which has excellent PTCR(positive temperature coefficient resistance) characteristics required for PTCR thermistors and sensors by adding potato-starch to (Ba,Sr)TiO3. CONSTITUTION: The porous (Ba,Sr)TiO3 is prepared by mixing (Ba0.7Sr0.3)TiO3 powder containing 0.1mol% of Sb2O3 with 5-20wt.% of potato-starch, forming a green body(15x12x7mm3) having about 55% in relative density, and sintering at 1350deg.C for 1hr in air. The resultant (Ba,Sr)TiO3 has more than 10¬6 of resistivity and 5-15% of porosity. | ||||||
| 155 | 전기적 성능을 갖는 시멘트 페이스트의 제조방법과 이 제조방법에 의해 제조된 시멘트 페이스트를 이용한 시멘트 구조물 제조방법 | KR1020110109452 | 2011-10-25 | KR1020130045030A | 2013-05-03 | 이행기; 김형기; 전정희 |
| PURPOSE: A manufacturing method of cement paste having electrical properties and a cement structure manufacturing method by using the cement paste manufactured by the same are provided to give piezoresistivity to the cement paste by mixing the carbon nanotubes having electrical properties into the cement paste. CONSTITUTION: A cement paste uses carbon nanotubes, silica fume, and cement as main components. The carbon nanotube content is 0.1-0.45 wt% based on the weight of the cement. The silica fume content is 10-30 wt% based on the weight of the cement. The carbon nanotube is a multi-wall carbon nanotube. A manufacturing method of the cement paste comprises the following steps: (S1) mixing the carbon nanotubes with silica fume and first dry mixing the same for a predetermined time; (S2) adding cement to the first dry mixed carbon nanotube-silica fume mixture and second dry mixing the same for a predetermined time; and (S3) adding water to the second dry mixed carbon nanotube-silica fume-cement mixture and mixing for a predetermined time. [Reference numerals] (AA) Start; (BB) End; (S1) Dry mix carbon nanotube-silica fume; (S2) Dry mix carbon nanotube-silica fume-cement; (S3) Add water and mix | ||||||
| 156 | 페이스트 조성물, 유전체 조성물, 커패시터 및 페이스트조성물의 제조방법 | KR1020087006883 | 2006-09-01 | KR101233702B1 | 2013-02-15 | 노나카토시히사; 하라요시타케; 요시오카마사히로 |
| (과제) 플랫 패널 디스플레이, 플렉시블 디스플레이, 휴대 정보단말의 디스플레이, 터치패널 등의 정보 표시 부재에서, 투명성이 필요로 되는 영역에 투명한 고유전율층을 형성하고, 층간 절연막으로서 투명전극 등과 조합함으로써 투명한 커패시터를 형성할 수 있는 유전체 조성물을 제공한다. (해결 수단) (a) 수지, (b) 페로브스카이트계 결정구조를 갖는 고유전율 무기입자, 및 (c) 유기용제를 함유해서 이루어지는 페이스트 조성물로서, (b) 고유전율 무기입자의 평균 입자지름이 0.002㎛이상 0.06㎛이하이며, 전체 유기용제량이 페이스트 조성물 전량의 35중량%이상 85중량%이하인 페이스트 조성물. 또한 (a) 수지, (b) 페로브스카이트계 결정 구조를 갖는 고유전율 무기입자를 함유해서 이루어지는 유전체 조성물로서, (b) 고유전율 무기입자의 평균 입자지름이 0.002㎛이상 0.06㎛이하인 유전체 조성물. 페이스트 조성물, 유전체 조성물, 커패시터 | ||||||
| 157 | 복합 구조물 제빙을 위한 ＣＮＴ계 저항 가열 | KR1020117025937 | 2010-04-26 | KR1020120016622A | 2012-02-24 | 샤,투샤르,케이.; 말레키,해리,씨.; 애드콕,대니얼,제이콥 |
| 복합 구조물은 매트릭스 재료와, 그리고 섬유 재료에 주입된 다수의 탄소 나노튜브(CNTs)를 포함하는 탄소 나노튜브(CNT)-주입 섬유 재료를 포함한다. 상기 CNT-주입 섬유 재료는 매트릭스 재료의 일부에 걸쳐 배치된다. 상기 복합 구조물은 CNT-주입 섬유 재료를 통해 전류의 적용에 맞게 적응되어 복합 구조물의 가열을 제공한다. 발열체는 섬유 재료에 주입된 다수의 CNTs를 포함하는 CNT-주입 섬유 재료를 포함한다. 상기 CNT-주입 섬유 재료는 이를 필요로 하는 구조물에 가열을 제공하기에 충분한 비율로 존재한다.
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| 158 | Method for producing a jeongsuseok using a synthetic mineral charge to occur | KR20100051510 | 2010-06-01 | KR20100081287A | 2010-07-14 | CHOI RIN |
| PURPOSE: A method for manufacturing water-purifying stone is provided to obtain the water-purifying stone emitting a large amount of anions using synthetic minerals which generates electric charge without using toxic components. CONSTITUTION: A method for manufacturing water-purifying stone makes synthetic minerals creating electric charge into granules having a paduk stone shape, a bean shape, a capsule shape, and fine gravel shape using a non-solvent aqueous resin containing no water resistant emulsifier. The non-solvent aqueous resin having strong water resistance includes an alkyl-epoxy-amino copolymer. | ||||||
| 159 | 고유전율계 자기 조성물 | KR1020020033216 | 2002-06-14 | KR1020030095681A | 2003-12-24 | 윤중락; 정태석; 송재용; 이병호; 장운석 |
| PURPOSE: Provided is an anti-reductive magnetic composition which has a high dielectric constant, a high insulation resistance even in applying high voltage and an excellent load property under the condition of a high temperature and a high humidity. CONSTITUTION: The anti-reductive magnetic composition having a high dielectric constant is characterized by comprising the glass frit composition represented by the formula of: aSiO2+bB2O3+cP2O5+dLi2O+eNa2O+fK2O+gMgO+hCaO+iSrO+jBaO as an additive, wherein a equals 100-(b+c+d+e+f+g+h+i+j) and is ranged from 8.58 to 65.6; b equals 100-(a+c+d+e+f+g+h+i+j) and is ranged from 0 to 46.4; c equals 100-(a+b+d+e+f+g+h+i+j) and is ranged from 0 to 41.6; d equals 100-(a+b+c+e+f+g+h+i+j) and is ranged from 0 to 46.92; e equals 100-(a+b+c+d+f+g+h+i+j) and is ranged from 0 to 29.58; f equals 100-(a+b+c+d+e+g+h+i+j) and is ranged from 0 to 51.0; g equals 100-(a+b+c+d+e+f+h+i+j) and is ranged from 0 to 19.0; h equals 100-(a+b+c+d+e+f+g+i+j) and is ranged from 0 to 19.0; i equals 100-(a+b+c+d+e+f+g+h+j) and is ranged from 0 to 19.0; and j equals 100-(a+b+c+d+e+f+g+h+i) and is ranged from 0 to 19.0. | ||||||
| 160 | 마이크로파 유전체 세라믹 조성물 | KR1020020022541 | 2002-04-24 | KR1020030084064A | 2003-11-01 | 박찬식; 문석주; 김상근 |
| PURPOSE: Provided is a microwave dielectric ceramic composition, which has excellent dielectric properties and is adequate to be used in a dielectric resonator, an patch antenna and a laminated dielectric material. CONSTITUTION: The microwave dielectric ceramic composition comprises ZnWO4 and TiO2 and is represented by the formula of (1-x)ZnWO4+xTiO2 in which TiO2 has the mole fraction of 0<x<=0.4. The composition has the dielectric coefficient of 16-25 and the quality factor(Qxf0) of 30000-70000. The composition optionally comprises 30 mole% or less of PbWO4 based on the total composition. Further, the composition optionally comprises 6 wt% or less of one or more materials selected from the group consisting of B2O3, ZnO, PbO, ZnTiO3 and BiNbO4. | ||||||
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