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公开(公告)号：US4041437A
公开(公告)日：1977-08-09
申请号：US644414
申请日：1975-12-24
CPC分类号： G01N27/121 , G01N27/12 , Y10S252/963
摘要： This invention provides a humidity sensor having a negative coefficient of resistivity for relative humidity, which comprises 99.99 to 10 mole percent of iron oxide (Fe.sub.2 O.sub.3) and 0.01 to 90 mole percent of at least one member selected from alkali metal oxides, which are lithium oxide (Li.sub.2 O), sodium oxide (Na.sub.2 O), potassium oxide (K.sub.2 O) and cesium oxide (Cs.sub.2 O). The amount of the alkali metal oxide in the sensor is preferably 0.01 to 25 mole percent. This sensor is advantageous because it can accurately detect the changes in humidity and it has a long, stable life.
摘要翻译： 本发明提供了一种湿度传感器，其具有相对湿度的负电阻系数，其包含99.99至10摩尔％的氧化铁（Fe 2 O 3）和0.01至90摩尔％的选自碱金属氧化物中的至少一种，其为氧化锂 （Li 2 O），氧化钠（Na 2 O），氧化钾（K 2 O）和氧化铯（Cs 2 O）。 传感器中的碱金属氧化物的量优选为0.01〜25摩尔％。 该传感器是有利的，因为它可以准确地检测湿度变化，并且寿命长。
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公开(公告)号：US4028277A
公开(公告)日：1977-06-07
申请号：US538778
申请日：1975-01-06
CPC分类号： H01C7/112
摘要： A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi.sub.2 O.sub.3), titanium oxide (TiO.sub.2) and one or two members selected from the group consisting of aluminum fluoride (AlF.sub.3), chromium fluoride (CrF.sub.3), nickel fluoride (NiF.sub.2) and strontium oxide (SrO) with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value, a high n-value and a high power dissipation for surge energy and high stability to a high D.C. load. Other additives such as cobalt oxide (CoO), manganese oxide (MnO), barium oxide (BaO), boron oxide (B.sub.2 O.sub.3), chromium oxide (Cr.sub.2 O.sub.3), nickel oxide (NiO) and germanium oxide (GeO.sub.2) improve the voltage nonlinear property of the sintered body.
摘要翻译： 一种电压依赖电阻器，包括基本上由ZnO组成的烧结体作为主要成分，以及作为添加剂的氧化铋（Bi 2 O 3），氧化钛（TiO 2）和选自氟化铝（AlF 3）中的一种或两种 ），氟化铬（CrF 3），氟化镍（NiF 2）和氧化锶（SrO），电极施加到烧结体的相对表面。 该电压相关电阻具有低C值，高n值和高浪涌能量的高功率消耗以及对高直流负载的高稳定性。 其它添加剂如氧化钴（CoO），氧化锰（MnO），氧化钡（BaO），氧化硼（B2O3），氧化铬（Cr2O3），氧化镍（NiO）和氧化锗（GeO2） 的烧结体。
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公开(公告)号：US3999159A
公开(公告)日：1976-12-21
申请号：US564628
申请日：1975-04-02
CPC分类号： H01C7/112
摘要： A voltage-dependent resistor comprising a sintered body consisting essentially of ZnO, as a main constituent, and, as additives, bismuth oxide (Bi.sub.2 O.sub.3), cobalt oxide (CoO) and/or manganese oxide (MnO) and/or aluminum oxide (Al.sub.2 O.sub.3) and gallium oxide (Ga.sub.2 O.sub.3) and/or indium oxide (In.sub.2 O.sub.3) with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value, a high n-value, high power dissipation for surge energy and a high stability to a high D.C. load. Other additives such as titanium oxide (TiO.sub.2), chromium oxide (Cr.sub.2 O.sub.3) and nickel oxide (NiO) improve the voltage dependent property of the sintered body.
摘要翻译： 作为主要成分的氧化铋（Bi 2 O 3），氧化钴（CoO）和/或氧化锰（MnO）和/或氧化铝（Al 2 O 3）的添加剂，作为添加剂， ）和氧化镓（Ga 2 O 3）和/或氧化铟（In 2 O 3），其中电极施加到烧结体的相对表面。 该电压相关电阻具有低C值，高n值，高浪涌能量功耗和高直流负载的高稳定性。 其他添加剂如二氧化钛（TiO 2），氧化铬（Cr 2 O 3）和氧化镍（NiO）可提高烧结体的电压依赖性。
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公开(公告)号：US3953373A
公开(公告)日：1976-04-27
申请号：US489827
申请日：1974-07-18
申请人： Mikio Matsuura , Osamu Makino , Nobuji Nishi , Michio Matsuoka
发明人： Mikio Matsuura , Osamu Makino , Nobuji Nishi , Michio Matsuoka
CPC分类号： H01C7/112
摘要： A voltage-dependent resistor comprising a sintered body comprising ZnO as a major part and Bi.sub.2 O.sub.3 and GeO.sub.2 as additives with electrodes applied to the opposite surfaces of the sintered body. This voltage-dependent resistor has a low C-value and a high n-value in I=(V/C).sup.n along with high power dissipation for surge energy and high stability to a high D.C. load. Further, other additives such as NiO, Co.sub.2 O.sub.3, MnO, TiO.sub.2 and Cr.sub.2 O.sub.3 can advantageously be added to the sintered body.
摘要翻译： 一种电压依赖电阻器，包括以ZnO作为主要部分的烧结体，Bi 2 O 3和GeO 2作为添加剂，其电极施加到烧结体的相对表面。 该电压相关电阻在I =（V / C）n中具有低C值和高n值，同时具有用于浪涌能量的高功耗和高直流负载的高稳定性。 此外，可以有利地将其它添加剂如NiO，Co2O3，MnO，TiO2和Cr2O3添加到烧结体中。
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公开(公告)号：US3962144A
公开(公告)日：1976-06-08
申请号：US515360
申请日：1974-10-16
申请人： Mikio Matsuura , Michio Matsuoka , Osamu Makino
发明人： Mikio Matsuura , Michio Matsuoka , Osamu Makino
CPC分类号： H01C7/112
摘要： A process for making a bulk-type voltage-dependent resistor and more particularly to a varistor comprising a zinc oxide sintered body using heat-treated zinc oxide powder. By heat-treating zinc oxide powder before the sintering step, a bulk-type voltage-dependent resistor is obtainable which is characterized by a high n-value in a region of current higher than 10A/cm.sup.2 and high power dissipation as well as a lower C-value.
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公开(公告)号：US3936396A
公开(公告)日：1976-02-03
申请号：US29416
申请日：1970-04-17
CPC分类号： H01C7/112
摘要： A voltage variable resistor is provided comprising a sintered body, electrodes on opposite major surfaces of the body and leads connected to the electrodes. The sintered body consists of zinc oxide and an additive comprising 0.05 to 15.0 mole % of one member selected from the group consisting of aluminum fluoride, beryllium fluoride, cerium fluoride, nickel fluoride and vanadium fluoride.
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