摘要:
It is an object to provide a superfine copper powder slurry which enables finer-pitch wirings formation on the substrates when it is used for an electroconductive ink or an electroconductive paste for wirings. In order to achieve the object, a superfine copper powder slurry produced by suspending a superfine copper powder having powder characteristics of the value DTEM (micron meter) of 0.01 to 0.1, the ratio D50/DTEM of 1.0 to 1.5 and the ratio grain size/DTEM of 0.2 to 1 in a solvent, where (DTEM is) an average primary particle diameter of the powder particle diameter directly measured from observation image of TEM and calculated with observation magnification, and D50 is a particle diameter at 50% cumulative particle size examined by Doppler scattering photo analysis.
摘要翻译:本发明的目的是提供一种超细铜粉浆料,其用于导电油墨或导电糊料用于配线时,能够在基材上形成更细的节距布线。 为了达到上述目的,通过将具有粉末特性为D TEM(微米)的超细铜粉末悬浮在0.01〜0.1的比例D 50下制造的超细铜粉末浆料 在溶剂中为1.0〜1.5,晶粒尺寸/ D TEM TEM比率为0.2〜1,其中(D TEM) SUB>是)从TEM的观察图像直接测量的粉末粒径的平均一次粒径,并用观测倍率计算,D 50是通过多普勒检查的50%累积粒径的粒径 散射照片分析。
摘要:
It is an object of the present invention to provide a flaky copper powder composed of fine particles having a sharp distribution particle size, a large crystallite diameter and high oxidation resistance. The flaky copper powder of the present invention contains P and has a crystallite diameter/D1A ratio of 0.01 or more to achieve the object. The method for producing the flaky copper powder comprises four steps: a first step of preparing an aqueous solution containing a copper salt and complexing agent; a second step of adding an alkali hydroxide to the aqueous solution to prepare a first slurry containing cupric oxide; a third step of adding a first reducing agent which can reduce the cupric oxide into cuprous oxide to the first slurry to prepare a second slurry containing cuprous oxide; and a fourth step of adding a second reducing agent which can reduce the cuprous oxide into copper to the second slurry to provide a flaky copper powder, wherein phosphoric acid and its salt are added in at least one of the first to third steps and/or in the second slurry in the fourth step.
摘要翻译:本发明的目的是提供一种由具有尖锐分布粒度,大晶粒直径和高抗氧化性的细颗粒组成的片状铜粉末。 本发明的片状铜粉含有P,并且具有0.01以上的微晶直径/ D 1A%比以达到目的。 片状铜粉的制造方法包括四个步骤:制备含有铜盐和络合剂的水溶液的第一步骤; 向该水溶液中添加碱性氢氧化物以制备含有氧化铜的第一浆料的第二步骤; 第三步骤,将第一还原剂加入到第一浆料中以制备含有氧化亚铜的第二浆料; 以及第四步骤,添加第二还原剂,其可以将氧化亚铜还原成铜到第二浆料中以提供片状铜粉末,其中在第一至第三步骤中的至少一个中加入磷酸及其盐,和/或 在第四步中的第二浆料中。
摘要:
The objects of the present invention are to provide silver compound-coated silver powder applicable to a conductive paste for forming conductive interconnections for an electronic circuit by the silver powder coated with a silver compound which is thermally decomposed at lower temperature than a melting point of silver, and also to provide a method for producing the same. The means for achieving the objects involves thermal decomposition of the silver compound which is decomposed at much lower temperature than a melting point of silver to fuse silver compound-coated silver particles to each other by silver from the silver compound during sintering of a substrate on which electronic circuit conductive interconnections are to be formed by the conductive paste which contains the silver compound-coated silver powder containing the silver compound-coated silver particles in which the silver particles are coated with the silver compound.
摘要:
This invention is a silver powder having a low-temperature sintering performance and dispersibility, which allows the powder particles to be agglomerated to a small degree and be nearly in the monodisperse state. Employed is silver powder of fine silver particles each to which fine silver particles adhere, wherein fine silver particles of nano-order particle size are adhered to the surface of each silver powder particle. The powder particles of the silver powder of fine silver particles each to which fine silver particles adhere have excellent dispersibility. In the production of the silver powder of fine silver particles each to which fine silver particles adhere, a process of including the steps of: adding a silver nitrate and a neutralizing agent into a slurry of silver powder in a dispersing medium; dissolving the mixture while stirring to allow fine silver oxide particles to be precipitated on the surface of each silver powder particle; washing the resultant silver powder; and exposing the fine silver oxide particles to UV rays to reduce the same to fine silver particles.
摘要:
Objects of the present invention are to provide oxidation resistant nickel-coated copper powder for conductive paste capable of forming a conductive wiring part for an electronic circuit, and to provide a method for producing the same. In order to achieve the objects, there is provided nickel-coated copper powder which is characterized in that it comprises nickel-coated copper particles in which a core material is copper particles, a catalyst for plating is fixed to a surface of the copper-particles by reduction reaction and electroless plated nickel is applied to the outermost surface. The reduction reaction is characterized in that hydrazine is used as a reducing agent.
摘要:
The present invention is mainly for providing a flake copper powder for a conductive paste with particle properties which are defined by that the particle thickness is thinner being possible for use to form an electrode or a circuit, and a production process thereof. To achieve the object of producing the following particles, each powder particles shape is plastically processed into a flake-shape, wherein the flake copper powder has a cumulative particle diameter D50 of 10 μm or smaller measured with laser diffraction scattering particle size distribution method. The D10, D50 and D90 measured with the laser diffraction scattering particle size distribution method are illustrative and the SD/D50 value measured by the standard deviation of particle distribution with the laser diffraction scattering particle size distribution, is 0.55 or larger and/or a D90/D10 of 4.5 or smaller. The flake copper powder is compressed with a high energy ball mill whose media beads having fine particle diameter which plastically deforms the copper particles into flake-shaped particles, so that stable flake copper powder is produced.
摘要:
Object of the invention is to provide a tin powder containing fine tin particles which performs fine pitch wiring circuit easily, excellent in filling the minute diameter via holes, and exhibits low temperature fusibility. In order to achieve the object, a copper powder slurry is prepared by adding a copper powder in water with agitation and a tin solution for deposition by substitution is prepared by adding an acid to an aqueous mixture solution containing a stannous salt and thiourea. Then the copper powder slurry and the tin solution for deposition by substitution are mixed with agitation in a certain ratio of tin in the solution against to copper in the slurry to deposit tin by substitution on the surface of the copper powder. As a result, the tin powder of the present invention is obtained.
摘要:
It is an object to provide a copper-containing tin powder having excellent capabilities in forming fine wiring circuits and filling via holes with ability in bond by melting at a low temperature. In order to achieve the object, it is produced from a copper powder as a starting material by a wet substitution process and it contains remainder of copper un-substituted at 30% by weight or less. The change rate of properties of the copper-containing tin powder, e.g. an average primary particle size or the like is in the range from −20 to +5% with respect to the starting copper powders. The copper-containing tin powder is produced by a wet substitution process in which a copper powder is brought into contact with a plating solution for tin substitution to make copper component constituting the copper powder dissolve with simultaneous substituted deposition of tin.
摘要:
An internal combustion engine exhaust gas purifying catalyst carrier has a core body formed of a CeO2—ZrO2 solid solution or a CeO2—ZrO2—La2O2 solid solution, and CeO2 supported on the surface of the core body, wherein the core body has a CeO2 content of 5 to 35 mass % and an La2O2 content of 0 to 10 mass %, on the basis of the mass of the carrier, and the amount of CeO2 supported on the core body is 5 to 17 mass %, on the basis of the mass of the carrier.
摘要翻译:内燃机废气净化催化剂载体具有由CeO 2 -ZrO 2固溶体或CeO 2 -ZrO 2 -La 2 O 2固溶体形成的芯体,以及负载在芯体表面的CeO 2,其中,芯体的CeO 2含量 基于载体的质量为5〜35质量%,La 2 O 2含量为0〜10质量%,并且,核心体上负载的CeO 2的量为5〜17质量% 的承运人。
摘要:
An internal combustion engine exhaust gas purifying catalyst carrier has a core body formed of a CeO2—ZrO2 solid solution or a CeO2—ZrO2—La2O2 solid solution, and CeO2 supported on the surface of the core body, wherein the core body has a CeO2 content of 5 to 35 mass % and an La2O2 content of 0 to 10 mass %, on the basis of the mass of the carrier, and the amount of CeO2 supported on the core body is 5 to 17 mass %, on the basis of the mass of the carrier.