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1. 发明申请

US20070068341A1 Methods for spherically granulating and agglomerating metal particles, and the metal particles prepared thereby, anodes made from the metal particles 有权
公开(公告)号：US20070068341A1
公开(公告)日：2007-03-29
申请号：US11356723
申请日：2006-02-17
申请人： Yuewei Cheng , Yuezhong Ma , Hongdong Liu , Guoqi Yang , Chunxiang Wang , Yanping Wang , Shiping Zheng
发明人： Yuewei Cheng , Yuezhong Ma , Hongdong Liu , Guoqi Yang , Chunxiang Wang , Yanping Wang , Shiping Zheng
IPC分类号： B22F9/04
CPC分类号： B22F1/0096 , B22F2998/00 , B22F2998/10 , B22F2999/00 , H01G9/0525 , B22F9/22 , B22F9/023 , B22F1/0014 , B22F1/0048 , B22F1/0055 , B22F1/0085 , B22F2201/20 , B22F9/04 , B22F2009/042
摘要： A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 μm; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.2 to about 6.0 m2/g, a FSSS of at least 1.0 μm, a Scott bulk density of from about 1.2 g/cm3 to about 5.5 g/cm3. The present agglomerated niobium powder have a flow rate of at least about 1.0 g/sec, a BET surface area of from about 0.5 to about 8.0 m2/g, a FSSS of at least 1.0 μm, a Scott bulk density of from about 0.7 g/cm3 to about 3.5 g/cm3. Said tantalum and/or niobium metal particles have improved pore size distribution of the sintered anodes and increased pellet crush strength. The present invention further provides an electrolytic capacitor anodes made from the tantalum and/or niobium particles according to the present invention having a capacitance of from about 5,000 μFV/g to about 300,000 μFV/g.

2. 发明授权

US09309584B2 Base material for high temperature alloy and manufacture method thereof 有权
标题翻译：高温合金基材及其制造方法
公开(公告)号：US09309584B2
公开(公告)日：2016-04-12
申请号：US14157178
申请日：2014-01-16
申请人： NINGXIA ORIENT TANTALUM INDUSTRY CO., LTD.
发明人： Xiaoying Song , Quanxin Nie , Xun Liang , Weiping Xie , Zhangjun Bai , Bing Zhao , Mingyang Li , Dong Mu , Li Wang , Peng Wan
IPC分类号： C22C27/06 , C22C30/00 , C22C38/00 , B22D7/00
CPC分类号： C22C27/06 , B22D7/00 , C22B9/04 , C22C1/03 , C22C30/00 , C22C33/06 , C22C38/00 , C22C38/001 , C22C38/22 , C22C38/26 , C22C38/28
摘要： The present invention relates to a base material for high temperature alloy and a process for manufacturing the same. The base material includes following components (by weight): 10-45% Cr, 0.5-12% Nb, 0.7-2.5% Ti, ≦9.0% Mo, ≦8.0% W, ≦2% Mn, ≦1.0% Si, ≦2.0% Al, ≦0.5% C, ≦0.032% O, ≦0.032% N,≦0.01% S, ≦0.02% P, and balance being Fe and unavoidable impurities. The process for manufacturing the base material for high temperature alloy includes following steps: providing raw materials according to the target composition; charging the raw materials in a crucible uniformly layer and layer according to a certain sequence, smelting in vacuum condition; after the materials being melted completely, holding the melt at a temperature; and casting ingot, and cooling to obtain a base material for high temperature alloy.
摘要翻译：本发明涉及一种高温合金用基材及其制造方法。基材包含以下组分（重量）：10-45％Cr，0.5-12％Nb，0.7-2.5％Ti，＆amp; N; 9.0％Mo，＆amp; N; 8.0％W，＆amp; NEE; 2％Mn，＆amp; ％Si，NlE; 2.0％Al，NlE; 0.5％C，NlE; 0.032％O，NlE; 0.032％N，NlE; 0.01％S，＆amp; NE; 0.02％P，余量为Fe和不可避免的杂质。制造高温合金基材的方法包括以下步骤：根据目标组成提供原料; 在坩埚中按照一定的顺序均匀地层层化原料，在真空条件下冶炼; 在材料完全熔化之后，将熔体保持在一定温度; 铸锭，冷却，得到高温合金基材。

3. 发明授权

US08673052B2 Process for preparing tantalum powder for capacitors 有权
标题翻译：电容器钽粉制备工艺
公开(公告)号：US08673052B2
公开(公告)日：2014-03-18
申请号：US12818379
申请日：2010-06-18
申请人： Wenfeng Shi , Xueqing Chen , Yong Li , Xudong Xi , Tao Guo
发明人： Wenfeng Shi , Xueqing Chen , Yong Li , Xudong Xi , Tao Guo
IPC分类号： B22F9/20 , B22F1/00
CPC分类号： C01G35/00 , B22F9/20 , B22F2998/10 , B22F2999/00 , C01P2004/03 , C01P2004/62 , C01P2006/10 , C01P2006/12 , C01P2006/40 , H01G9/0029 , H01G9/0525 , B22F2201/013 , B22F2201/20 , B22F2201/10 , B22F1/0096
摘要： The present invention provides a process for preparing a tantalum powder with high specific capacity, which process comprising the steps of, in sequence, (1) a first reduction step: mixing tantalum oxide powder and a first reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum suboxides powder; (2) a second reduction step: mixing the tantalum suboxides powder obtained from the step (1), in which impurities have been removed, and a second reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum powder having high oxygen content; (3) a third reduction step: mixing the tantalum powder having high oxygen content obtained from the step (2), in which impurities have been removed, with a third reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum metal powder suitable for capacitors; wherein after each reduction step, the oxidation product of reducing agent and the residual reducing agent are removed from the reaction product.
摘要翻译：本发明提供一种制备高比容量的钽粉的方法，该方法包括以下步骤：（1）第一还原步骤：均匀混合氧化钽粉末和第一还原剂粉末，然后进行在氢气和/或惰性气体或真空气氛中还原反应，得到低氧化钽粉末; （2）第二还原步骤：将其中除去杂质的步骤（1）获得的低密度氧化钡粉末和均质的第二还原剂粉末混合，然后在氢气和/或惰性气体中进行还原反应，或真空气氛，得到氧含量高的钽粉末; （3）第三还原步骤：将已经除去杂质的步骤（2）获得的具有高氧含量的钽粉末与第三还原剂粉末均匀混合，然后在氢气和/或惰性气体或真空气氛，得到适合电容器的钽金属粉末; 其中在每个还原步骤之后，从反应产物中除去还原剂和剩余还原剂的氧化产物。

4. 发明申请

US20120300362A1 Tantalum Wire Used for Anode Lead of Tantalum Capacitor and Manufacturing Method Thereof 审中-公开
标题翻译：用于钽电容器阳极引线的钽丝及其制造方法
公开(公告)号：US20120300362A1
公开(公告)日：2012-11-29
申请号：US13145209
申请日：2009-05-21
申请人： Bing Zhao , Linghui Du , Yongxu Xie , Quinfeng Wan , Huifeng Wang , Guohua Qiu
发明人： Bing Zhao , Linghui Du , Yongxu Xie , Quinfeng Wan , Huifeng Wang , Guohua Qiu
IPC分类号： H01G4/35 , H01R43/16
CPC分类号： H01G9/0029 , B21B1/16 , B21B1/18 , B22F3/24 , B22F5/12 , B22F2998/10 , B22F2999/00 , C22C1/045 , H01G9/012 , H01G9/048 , H01G9/052 , Y10T29/49204 , B22F3/02 , B22F2003/248 , B22F3/18 , B22F2201/03
摘要： The present invention relates to a tantalum wire for anode lead of tantalum capacitors, characterized in that the cross section of the tantalum wire is approximate rectangular or regular rectangular. The present invention also relates to a process for manufacturing the tantalum wire, comprising the steps of: providing feedstock tantalum wire; subjecting the feedstock tantalum wire to heat treatment; subjecting the heat treated tantalum wire to surface pretreatment to form an oxide membrane on the surface-pretreated tantalum wire; rolling the surface-pretreated tantalum wire by lubricating with lubricant oil to make the cross section of the rolled tantalum wire being approximate rectangular or regular rectangular; subjecting the tantalum wire to final annealing.
摘要翻译：本发明涉及一种钽电容器用阳极引线用钽线，其特征在于，钽线的截面为矩形或矩形近似。本发明还涉及一种用于制造钽丝的方法，包括以下步骤：提供原料钽丝; 对原料钽丝进行热处理; 对经热处理的钽丝进行表面预处理，以在表面预处理的钽丝上形成氧化膜; 通过用润滑油润滑来滚动表面预处理的钽丝，使得轧制的钽丝的横截面为近似矩形或矩形矩形; 对钽丝进行最终退火。

5. 发明申请

US20100326239A1 Process for Preparing Tantalum Powder for Capacitors 有权
标题翻译：制备电容器钽粉的工艺
公开(公告)号：US20100326239A1
公开(公告)日：2010-12-30
申请号：US12818379
申请日：2010-06-18
申请人： Wenfeng SHI , Xueqing Chen , Yong Li , Xudong Xi , Tao Guo
发明人： Wenfeng SHI , Xueqing Chen , Yong Li , Xudong Xi , Tao Guo
IPC分类号： B22F9/20 , B22F1/00
CPC分类号： C01G35/00 , B22F9/20 , B22F2998/10 , B22F2999/00 , C01P2004/03 , C01P2004/62 , C01P2006/10 , C01P2006/12 , C01P2006/40 , H01G9/0029 , H01G9/0525 , B22F2201/013 , B22F2201/20 , B22F2201/10 , B22F1/0096
摘要： The present invention provides a process for preparing a tantalum powder with high specific capacity, which process comprising the steps of, in sequence, (1) a first reduction step: mixing tantalum oxide powder and a first reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum suboxides powder; (2) a second reduction step: mixing the tantalum suboxides powder obtained from the step (1), in which impurities have been removed, and a second reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum powder having high oxygen content; (3) a third reduction step: mixing the tantalum powder having high oxygen content obtained from the step (2), in which impurities have been removed, with a third reducing agent powder homogenously, and then carrying out reduction reaction in hydrogen and/or inert gas or vacuum atmosphere to obtain a tantalum metal powder suitable for capacitors; wherein after each reduction step, the oxidation product of reducing agent and the residual reducing agent are removed from the reaction product.
摘要翻译：本发明提供一种制备高比容量的钽粉的方法，该方法包括以下步骤：（1）第一还原步骤：均匀混合氧化钽粉末和第一还原剂粉末，然后进行在氢气和/或惰性气体或真空气氛中还原反应，得到低氧化钽粉末; （2）第二还原步骤：将其中除去杂质的步骤（1）获得的低密度氧化钡粉末和均质的第二还原剂粉末混合，然后在氢气和/或惰性气体中进行还原反应，或真空气氛，得到氧含量高的钽粉末; （3）第三还原步骤：将已经除去杂质的步骤（2）获得的具有高氧含量的钽粉末与第三还原剂粉末均匀混合，然后在氢气和/或惰性气体或真空气氛，得到适合电容器的钽金属粉末; 其中在每个还原步骤之后，从反应产物中除去还原剂和剩余还原剂的氧化产物。

6. 发明授权

US10121597B2 Tantalum wire used for anode lead of tantalum capacitor and manufacturing method thereof 有权
公开(公告)号：US10121597B2
公开(公告)日：2018-11-06
申请号：US14882249
申请日：2015-10-13
申请人： Ningxia Orient Tantalum Industry Co., Ltd.
发明人： Bing Zhao , Linghui Du , Yongxu Xie , Qingfeng Wan , Huifeng Wang , Guohua Qiu
IPC分类号： H01R43/00 , H01G9/00 , H01G9/012 , H01G9/048 , B21B1/18 , B22F3/24 , B22F5/12 , C22C1/04 , H01G9/052
摘要： The present invention relates to a tantalum wire for anode lead of tantalum capacitors, characterized in that the cross section of the tantalum wire is approximate rectangular or regular rectangular. The present invention also relates to a process for manufacturing the tantalum wire, comprising the steps of: providing feedstock tantalum wire; subjecting the feedstock tantalum wire to heat treatment; subjecting the heat treated tantalum wire to surface pretreatment to form an oxide membrane on the surface-pretreated tantalum wire; rolling the surface-pretreated tantalum wire by lubricating with lubricant oil to make the cross section of the rolled tantalum wire being approximate rectangular or regular rectangular; subjecting the tantalum wire to final annealing.

7. 发明申请

US20170226616A1 TANTALUM POWDER AND PROCESS FOR PREPARING THE SAME, AND SINTERED ANODE PREPARED FROM THE TANTALUM POWDER 审中-公开
公开(公告)号：US20170226616A1
公开(公告)日：2017-08-10
申请号：US15125803
申请日：2014-11-03
申请人： NINGXIA ORIENT TANTALUM INDUSTRY CO., LTD.
发明人： Yuewei CHENG , Fukun LIN , Xueqing ZHANG , Guoqing LUO , Haiyan MA , Yinghui MA , Yanjie WANG , Xuanyu WANG , Dongjie ZHANG
IPC分类号： C22F1/18 , B22F9/24 , B22F3/10 , H01G9/052 , C21D3/02 , H01G9/042 , H01G9/00 , B22F1/00 , B22F5/00
摘要： The invention relates to the rare metal smelting field, and particularly, the present invention relates to a tantalum powder for preparing capacitors and a process for preparing the tantalum powder, and to a sintered anode prepared from the tantalum powder. As to the tantalum powder as provided by the invention, its primary tantalum powder has a BET of from 3.0 to 4.5 m2/g. After the secondary agglomeration, the tantalum powder has a large particle size. The tantalum powder has an average Fisher sub-sieve size (FSSS) of 1.2 to 3.0 μm wherein as measured with a standard sieve mesh, more than 75% of tantalum powder has a +325-mesh, and a particle size distribution D50 of more than 60 μm, that is, the secondary particle size is high. A resultant capacitor anode prepared by sintering the tantalum powder of the invention at 1200° C. for 20 minutes and then being energized at the voltage of 20 V has the specific capacitance of from 140,000 to 180,000 μFV/g and the residual current of less than 1.0 nA/μFV. Meantime, the invention provides an economical process for making the tantalum powder.

8. 发明申请

US20140076462A1 METHOD FOR PASSIVATING TANTALUM METAL SURFACE AND APPARATUS THEREOF 审中-公开
标题翻译：用于钝化金属表面的方法及其装置
公开(公告)号：US20140076462A1
公开(公告)日：2014-03-20
申请号：US14006606
申请日：2011-03-23
申请人： Aiguo Zheng , Yuezhong Ma , Shiping Zheng , Xuecheng Dong , Hongbo Qin , Zhijun Yang , Shiwu Hua , Hui Li , Xudong Xi , Qingsheng Zhang , Shengfang Yang , Yong Jin
发明人： Aiguo Zheng , Yuezhong Ma , Shiping Zheng , Xuecheng Dong , Hongbo Qin , Zhijun Yang , Shiwu Hua , Hui Li , Xudong Xi , Qingsheng Zhang , Shengfang Yang , Yong Jin
IPC分类号： C23C8/10
CPC分类号： C23C8/10 , C23C8/02 , C23C8/12
摘要： A method for passivating tantalum metal surface is provided, the method comprises cooling tantalum metal to or below 32° C. and/or passivating tantalum metal surface by oxygen-containing gas with a temperature of 0° C. or below. Also provided is an apparatus for passivating tantalum metal surface for applying the method, comprising a heat treatment furnace, an argon forced-cooling device and/or a device for cooling oxygen-containing gas.
摘要翻译：提供了一种钝化钽金属表面的方法，该方法包括将钽金属冷却至或低于32℃，和/或通过含0℃或更低温度的含氧气体钝化钽金属表面。还提供了一种用于钝化用于施加该方法的钽金属表面的装置，包括热处理炉，氩强制冷却装置和/或用于冷却含氧气体的装置。

9. 发明申请

US20070193409A2 METHODS FOR SPHERICALLY GRANULATING AND AGGLOMERATING METAL PARTICLES, AND THE METAL PARTICLES PREPARED THEREBY, ANODES MADE FROM THE METAL PARTICLES 有权
公开(公告)号：US20070193409A2
公开(公告)日：2007-08-23
申请号：US11356723
申请日：2006-02-17
申请人： Jilin He , Luntao Pan , Aiguo Zheng , Yuewei Cheng , Yuezhong Ma , Hongdong Liu , Guoqi Yang , Chunxiang Wang , Yanping Wang , Shiping Zheng
发明人： Jilin He , Luntao Pan , Aiguo Zheng , Yuewei Cheng , Yuezhong Ma , Hongdong Liu , Guoqi Yang , Chunxiang Wang , Yanping Wang , Shiping Zheng
IPC分类号： B22F9/04
CPC分类号： B22F1/0096 , B22F2998/00 , B22F2998/10 , B22F2999/00 , H01G9/0525 , B22F9/22 , B22F9/023 , B22F1/0014 , B22F1/0048 , B22F1/0055 , B22F1/0085 , B22F2201/20 , B22F9/04 , B22F2009/042
摘要： A method for spherically granulating and agglomerating metal particles such as tantalum and/or niobium powders is described in the present invention, which includes the steps of: a). comminuting the metal particles to form fine particles having D50 less than 50 μm; b). granulating the comminuted metal particles comprising volatile liquid, for example, tantalum and/or niobium particles comprising volatile liquid, to form wet spherical particles; c). still drying the wet spherical particles and removing volatile liquid to form flowable pre-agglomerated particles with increased bulk density; d). heat treating the pre-agglomerated particles; e). screening the heat treated powder to obtain the flowable agglomerated particles. The present invention provides a flowable spherical agglomerated metal particles, and especially tantalum and/or niobium particles having improved properties. The present agglomerated tantalum powder have a flow rate of at least about 2.0 g/sec, a BET surface area of from about 0.2 to about 6.0 m2/g, a FSSS of at least 1.0 μm, a Scott bulk density of from about 1.2 g/cm3 to about 5.5 g/cm3. The present agglomerated niobium powder have a flow rate of at least about 1.0 g/sec, a BET surface area of from about 0.5 to about 8.0 m2/g, a FSSS of at least 1.0 μm, a Scott bulk density of from about 0.7 g/cm3 to about 3.5 g/cm3. Said tantalum and/or niobium metal particles have improved pore size distribution of the sintered anodes and increased pellet crush strength. The present invention further provides an electrolytic capacitor anodes made from the tantalum and/or niobium particles according to the present invention having a capacitance of from about 5,000 μFV/g to about 300,000 μFV/g.

10. 发明申请

US20210060654A1 TANTALUM POWDER AND PREPARATION METHOD THEREFOR 有权
公开(公告)号：US20210060654A1
公开(公告)日：2021-03-04
申请号：US16958150
申请日：2017-12-27
申请人： NINGXIA ORIENT TANTALUM INDUSTRY CO., LTD.
发明人： Haiyan MA , Hui LI , Guoqing LUO , Yuewei CHENG , Chunxia ZHAO , Xueqing CHEN , Zhidao WANG , Fukun LIN , Guoqi YANG , Ning WANG , Yinghui MA , Yanjie WANG , Lijun LI , Honggang ZHANG
IPC分类号： B22F9/20 , B22F1/00 , B22F3/10 , B22F9/04
摘要： A tantalum powder, a tantalum powder compact, a tantalum powder sintered body, a tantalum anode, an electrolytic capacitor and a preparation method for tantalum powder. The tantalum powder contains boron element, and the tantalum powder has a specific surface area of greater than or equal to 4 m2/g; the ratio of the boron content of the tantalum powder to the specific surface area of the tantalum powder is 2˜16; the boron content is measured in weight ppm, and the specific surface area is measured in m2/g; Powder that can pass through a ρ-mesh screen in the tantalum powder accounts for over 85% of the total weight of the tantalum powder, where ρ=150˜170; and the tantalum powder with high CV has a low leakage current and dielectric loss, and good moldability.

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