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公开(公告)号：KR1019940022936A
公开(公告)日：1994-10-22
申请号：KR1019930003009
申请日：1993-03-02
Applicant: 한국과학기술연구원
IPC: H01L41/16
Abstract: 본 발명은 xPb(Y
2/3 W
1/3 )O
3 -yPbZrO
3 -zPbTiO
3 를 기본조성으로하며(0.01 ≤x0.02, 0.215 ≤y, z ≤0.764 이고 z+y+x=1임) La
2 O
3 , MnO
2 , Nb
2 O
2 , Cr
2 O
3 및 Ta
2 O
5 중 어느 한가지를 0.1-1.0중량%함유하는 산화물 압전재료에 관한 것이다. 이와같은 본 발명의 산화물 압전재료는 전기기계 결합계수가 높고 기계적 품질계수가 낮으며 큰 압전상수를 가지므로 각종 진동자 및 음향필터의 소재로써 사용될 수 있을 뿐 아니라 액츄에이터 소재로서도 적합하다.-
公开(公告)号：KR1019940005137B1
公开(公告)日：1994-06-11
申请号：KR1019910013923
申请日：1991-08-13
Applicant: 한국과학기술연구원
IPC: H01Q17/00
Abstract: The electric wave absorber consists of a mixed sinter obtained by calcining Ni-Zn type ferrite powder and Mn-Zn type ferrite powder having a different permeability respectively at 900 deg.C to form a stable spinel phase, and then mixing the component to make the Ni-Zn/Mn-Zn ratio 90/10 - 10/90 and sintering the mixture at 1150 deg.C for 1 hour.
Abstract translation: 电波吸收体由在900℃煅烧Ni-Zn型铁氧体粉末和Mn-Zn型铁氧体粉末分别具有不同渗透性而形成的混合烧结体组成，形成稳定的尖晶石相， Ni-Zn / Mn-Zn比为90/10〜10/90，在1150℃烧结1小时。
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公开(公告)号：KR1019940004381B1
公开(公告)日：1994-05-23
申请号：KR1019920006306
申请日：1992-04-15
Applicant: 한국과학기술연구원
IPC: C04B35/00
Abstract: The dielectric ceramic comprises a Pb(Mg1/3Nb2/3)O3 + bPbTiO3 + cPbO + dBaO +eCdO + fNb2O5, where 0.80
Abstract translation: 电介质陶瓷包括Pb（Mg1 / 3Nb2 / 3）O3 + bPbTiO3 + cPbO + dBaO + eCdO + fNb2O5，其中0.80 <= a <= 0.90,0.05 <= b <= 0.10,0.0013 <= c < 0.00 <= d <= 0.074,0.0025 <= f <= 0.05，a + b + c + d + e + f = 1. Pb（Mg1 / 3Nb2 / 3）O3，PbTiO3和PBCN。 通过湿法混合和干燥PbO，MgO，Nb2O5，TiO2，CdO和BaCO3的原料，然后煅烧; 然后混合，干燥树混合物，然后煅烧，粉碎和加入粘合剂并进行压模以获得圆形成型; 并烧结模具材料并研磨表面; 模具材料然后丝网印刷形成电极。
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Patent Agency Ranking
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公开(公告)号：KR1019910010125B1
公开(公告)日：1991-12-17
申请号：KR1019890017865
申请日：1989-12-04
Applicant: 한국과학기술연구원
IPC: C01B33/26
Abstract: The mulite is prepared by preparing 5-20 wt.% bohemite sol and 5- 15 wt.% silica sol respectively, controling at PH 3-5, dispersing after having sufficient surface charge, precipitating to get the peptizing bohemite and silica respectively, treating 1-5 wt.% seeding material (e.g. α-Al2O3, TiO2,ZrO2) in the same ways, centrifugal-separating the seeding material to get small- size particles, adding 1-5 wt.% seeding material to the peptizing bohemite, mixing the mixed solution with silica sol at the ratio of 2 mol silica to 3 mol alumina to make amorphous alumina silicate sol, drying, and calcinating.
Abstract translation: 通过分别制备5-20重量％的挥发性溶胶和5-15重量％二氧化硅溶胶来制备多孔沸石，控制PH 3-5，在充分的表面电荷之后分散，分别沉淀以得到胶溶波希米石和二氧化硅，处理 以相同的方式将1-5重量％的播种材料（例如α-Al 2 O 3，TiO 2，ZrO 2）离心分离出种子材料以获得小尺寸颗粒，向胶溶波长体加入1-5重量％的播种材料， 将混合溶液与二氧化硅溶胶以2mol二氧化硅与3mol氧化铝的比例混合，制成无定形硅酸铝溶胶，干燥和煅烧。
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公开(公告)号：KR1019900003929B1
公开(公告)日：1990-06-04
申请号：KR1019900005129
申请日：1990-04-13
Applicant: 한국과학기술연구원
IPC: G01N27/12
Abstract: The sensor for detecting methane, Butane, and propane gas at low temperature includes a metal oxide semiconductor layer whose ingredients are In2O3 (30-40%), Y2O3 (9-19%), and Al2O3 (50%). The method for manufacturing the semiconductor layer comprises a first process for mixing and heating the material at 450≦̸C, a second process for pulverizing and mixing with water to form paste, a third process for coating the paste on a ceramic insulator tube and for drying the coated tube, a fourth process for heating at 700-800≦̸C for 30 minutes, and a fifth process for cooling.
Abstract translation: 用于在低温下检测甲烷，丁烷和丙烷气体的传感器包括成分为In2O3（30-40％），Y2O3（9-19％）和Al2O3（50％）的金属氧化物半导体层。 制造半导体层的方法包括在450℃下混合和加热材料的第一种方法; C，用于粉碎和与水混合以形成糊料的第二种方法，第三种将糊料涂覆在陶瓷绝缘管上并进行干燥的方法 涂覆管，在700-800℃下加热30分钟的第四种方法和第五种冷却方法。
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