Abstract:
The invention relates to a method for producing a powder by pulverizing a stream of molten metal using a pulverization gas which directly hits said stream, whereby a) a reactive gas is used as the pulverization gas in such a way that a compound is formed by the reaction of the pulverization gas with the metal or an alloy component thereof and b) the temperature of the pulverization gas and the cooling speed are set in such a way, that the metal or the alloy component thereof is converted into the compound, to a substantial degree completely, in one step.
Abstract:
A non-aqueous electrolyte secondary battery containing an alloy particle capable of absorbing and desorbing lithium in the negative electrode has a short cycle life and is insufficient in high-rate discharge characteristics, since the alloy particle is pulverized during charge/discharge cycles. In order to solve this problem, a negative electrode is employed, which comprises an alloy particle containing: at least two selected from the group consisting of metal elements and semimetal elements; oxygen; and nitrogen. It is preferred that the alloy particle have a phase A capable of electrochemically absorbing and desorbing lithium ion and a phase B having lithium ion conductivity or lithium ion permeability and that the phase B contain larger amounts of oxygen and nitrogen than the phase A.
Abstract:
A method of producing an FeCrAl material by gas atomisation, wherein in addition to containing iron (Fe), chromium (Cr) and aluminium (Al) the material also contains minor fractions of one or more of the materials molybdenum (Mo), hafnium (Hf), zirconium (Zr), yttrium (Y), nitrogen (N), carbon (C) and oxygen (O). The invention is characterised by causing the smelt to be atomised to contain 0.05-0.50 percent by weight tantalum (Ta) and, at the same time, less than 0.10 percent by weight titanium (Ti). According to one highly preferred embodiment, nitrogen gas (N2) is used as an atomising gas to which a given amount of oxygen gas (O2) is added, said amount of oxygen gas being such as to cause the atomised powder to contain 0.02-0.10 percent by weight oxygen (0) at the same time as the nitrogen content of the powder is 0.01-0.06 percent by weight. The invention also relates to a high temperature material.
Abstract:
The present invention provides a metallic nickel powder in which the occurrence of delamination can be prevented by providing superior sintering properties in production processes for multilayer ceramic capacitors and by providing superior dispersion characteristics in the forming of conductive pastes. By being brought into contact with nickel chloride gas and a reducing gas at a temperature in the range of the reduction reaction, metallic nickel powder is produced in which the oxygen content is 0.1 to 2.0% by weight and there is no absorption peak at wavelengths ranging from 3600 to 3700 cm -1 in infrared spectroscopy.
Abstract:
PCT No. PCT/US92/00807 Sec. 371 Date Jul. 28, 1993 Sec. 102(e) Date Jul. 28, 1993 PCT Filed Jan. 31, 1992 PCT Pub. No. WO92/13664 PCT Pub. Date Aug. 20, 1992.A method of embrittling cleaned steel particles is described, followed by a grinding and sorting operation. Depending on the initial carbon content of the steel scrap, a reducing and carbon-containing atmosphere may be provided to carburize the particles as they are being embrittled. A quenching operation is provided at the end of the process to embrittle the particles and before the particles are ground. The ground grit which is produced may then be sorted by size and used as an abrasive compound, or, alternatively may be further ground and annealed in a subsequent operation to provide suitable powder for forming sintered parts. Prior to annealing the grit may be further ground in a partial oxidizing atmosphere to preoxidize the powder, in order to provide oxygen directly within the powder to react with any residual carbon so that the carbon monoxide gas can be formed and the powder can be substantially free of both carbon and oxides when the reaction is complete. Alternatively, the powder may be preheated in a controlled atmosphere prior to annealing to preoxidize the powder.
Abstract:
The present invention relates to the methods for the manufacture of the electrode material applicable to special bonding of the light metal elements or the spot resistance welding ,and also of the electrode itself. Those methods include the annealing treatment process which heats Cu-Al alloy metal and anneals in the vacuum state, the pretreatment reduction process generating pure Cu-Al alloy without the oxide by reducing the Cu-Al alloy powder which is annealed as above in the hydrogen atmosphere at 400∼500o C, the first oxidizing process which oxidizes the surface by heating above mentioned Cu-Al alloy without oxide in the air or oxygen atmosphere at 400∼500o C, the internal oxidizing process which Al in Cu-Al alloy powder is internally oxidized by heating above Cu-Al alloy powder oxidized at the first oxidizing process in the inert gas atmosphere at 900∼1000o C, and further the reduction process reducing above internally oxidized Cu-Al203 alloy powder in the hydrogen atmosphere. In summary the method for manufacturing the electrode material of Cu-Al203 powder through above mentioned various processes and for the electrode of it could be achieved.
Abstract translation:本发明涉及可用于轻金属元件或点电阻焊接的特殊接合的电极材料的制造方法以及电极本身的制造方法。 这些方法包括在真空状态下加热Cu-Al合金金属和退火的退火处理工艺,预处理还原工艺通过将如上所述退火的Cu-Al合金粉末在氢气中生成没有氧化物的纯Cu-Al合金 气氛400〜500℃,第一氧化处理通过在空气或氧气氛中加热400〜500℃的上述Cu-Al合金而不氧化而氧化表面,Cu-Al合金粉末中Al的内部氧化过程为 通过加热在第一氧化过程中氧化的Cu-Al合金粉末在惰性气体气氛中在900-300℃下进行内部氧化,进一步减少在氢气氛中内部氧化的Cu-Al 2 O 3合金粉末的还原过程。 综上所述,可以通过上述各种工艺制造Cu-Al 2 O 3粉末的电极材料及其电极的方法。
Abstract:
A process for producing ultrafine magnetic metal powder, which comprises reacting a hydrogen gas with a metal halide vapor while supplying an active gas having a higher reactivity with the metal halide vapor than with the hydrogen gas into the reaction zone. As a result, the amount of the hydrogen gas can be reduced, and ultrafine magnetic metal powder with good properties can be produced efficiently.
Abstract:
Disclosed is a method for the post-treatment of particles carried along in a process gas of a device for the generative manufacturing of three-dimensional objects, wherein the particles are conducted to a filter chamber. An oxidant is added to the particles and that an oxidation reaction of the particles with the oxidant is initiated.
Abstract:
A method for producing a powder magnetic core includes applying energy to a surface of a soft magnetic powder coated with an insulator, exposing the soft magnetic powder to an atmosphere having an atmospheric pressure dew point of −30° C. or higher and 15° C. or lower, and forming a molded body by pressing the soft magnetic powder at 20 MPa or more and 400 MPa or less.
Abstract:
A method of forming a three-dimensional printed part is disclosed which includes positioning a printing system at a first standoff position under a first condition. The method also includes positioning the printing system at a second standoff position under a second condition. The method of forming a three-dimensional printed part may include where one of the first condition and second condition may include a printing material drop being ejecting onto a surface of a substrate. The printing material drop may include a metal, a metallic alloy, or a combination thereof. A printing system and a three-dimensional printed part employed the method is also disclosed.