摘要:
The present invention relates to a stepwise method for the production of titanium-aluminum compounds and some titanium alloys and titanium-aluminum inter-metallic compounds and alloys. In a first step an amount of aluminum is mixed with an amount of aluminum chloride (AlCl3) and then an amount of titanium chloride (TiCl4) is added to the mixture. The mixture is heated to a temperature of less than 220° C. to form a product of TiCl3, aluminum and AlCl3. In a second step, more aluminum can be added if required, and the mixture heated again to a temperature above 900° C. to form titanium-aluminum compounds. This method results in the production of powdered forms of titanium-aluminum compounds with controllable composition. Suitable reactor apparatus is also described.
摘要:
A method for producing hydrogen gas is provided and comprises reducing a metal oxide in a reduction reaction between a carbon-based fuel and a metal oxide to provide a reduced metal or metal oxide having a lower oxidation state, and oxidizing the reduced metal or metal oxide to produce hydrogen and a metal oxide having a higher oxidation state. The metal or metal oxide is provided in the form of a porous composite of a ceramic material containing the metal or metal oxide. The porous composite may comprise either a monolith, pellets, or particles.
摘要:
The invention relates to a process for the production of metal alloy powders, in particular the invention relates to a process for producing titanium metal alloys from titanium dioxide and aluminium. Optionally the process can also include the use of one or more other oxides (metal or non-metal). The result is at least a Ti—Al alloy powder. If another metal oxide is used the result is a Ti-ternary alloy powder. If SiO2 is used the result is a Ti—Al—Si alloy.
摘要:
A method of winning a metal from its oxide ore by heating the ore in a partial vacuum or under an inert atmosphere in the presence of a reductant. The resulting product may be further reduced electrochemically to produce a purer metal.
摘要:
A metallic alloy is prepared from a gaseous mixture of at least two non-oxide precursor compounds, wherein the non-oxide precursor compounds collectively comprise the metallic constituents. The mixture of the non-oxide precursor compounds is oxidized to form a solid mixed metallic oxide. The solid mixed metallic oxide is chemically reduced to produce the metallic alloy.
摘要:
Processes for producing valve metal are described, in which valve metal oxide is converted to valve metal using a vapor-phase transport agent to form a gaseous valve metal species in the presence of a solid getter material. Also described is the valve metal so produced, and anodes prepared from the valve metal, as well as electrolytic capacitors using the anodes.
摘要:
The present invention relates to a method of producing Nd—Fe—B based nanophase powder, or more particularly, to a method of producing Nd2Fe14B phase powder of 1 &mgr;m or less, having Nd2Fe14B crystal grains of 50 nm or less, which comprises the following steps of: producing a precursor powder having a mixture of elements of Nd, Fe and B by means of spray-drying a mixed aqueous solution comprising Nd metal salt, Fe metal salt, and boric acid; producing an oxide composite powder by means of desaltation of said powder; reducing the composite oxide powder, and ball-milling of said composite powder comprising Nd oxides and &agr;-Fe; producing a mixed powder of Nd2Fe14B/CaO phase by mixing Ca to said composite powder after milling; and removing CaO by washing said composite powder with water, followed by drying.
摘要翻译:本发明涉及一种Nd-Fe-B系纳米相粉末的制造方法,更具体地说,涉及具有50nm以下的Nd 2 Fe 14 B结晶粒径为1nm以下的Nd 2 Fe 14 B相粉末的制造方法,该方法包括以下 步骤:通过喷雾干燥包含Nd金属盐,Fe金属盐和硼酸的混合水溶液,制备具有Nd,Fe和B元素混合物的前体粉末; 通过所述粉末的脱盐来生产氧化物复合粉末; 还原复合氧化物粉末,以及包含Nd氧化物和α-Fe的所述复合粉末的球磨; 通过在研磨后将Ca混合到所述复合粉末中来生产Nd 2 Fe 14 B / CaO相的混合粉末; 并用水清洗所述复合粉末,然后干燥除去CaO。
摘要:
A method of manufacturing niobium and/or tantalum powder consisting of: a first-stage reduction process of reducing niobium and/or tantalum oxides with alkali metals and/or alkaline-earth metals to obtain low-grade oxide powder represented by (NbTa) Ox, where xnull0.06 to 0.35, a process of removing the oxide of alkali metals and/or alkaline-earth metals generated in the first-stage reduction process, and a second-stage reduction process of reducing the low-grade oxide powder obtained in the first-stage reduction process, with a melt solution of alkali metals and alkaline-earth metals to obtain niobium and/or tantalum powder.
摘要:
The present invention relates to a process for the deoxidation of valve metal primary powders by means of reducing metals and/or metal hydrides, and a process for the production of tantalum powders that are suitable as anode material for electrolytic capacitors.
摘要:
A mass of solid aluminum carbide containing product is produced by a process in which a mixture is formed of an aluminum containing material and a carbonaceous material consisting of, containing or yielding carbon. Then the resulting mixture is heated to a temperature sufficient to react carbon of the carbonaceous material with the aluminum of the aluminum containing material to produce solid aluminum carbide. The solid aluminum carbide then is able to be heated with an aluminum compound selected from Al2O3, Al4CO4, AlO, Al2O and mixtures thereof, to produce aluminum metal and carbon monoxide.
摘要翻译:通过其中混合物由含铝材料和由碳组成,含有或产生碳的碳质材料形成的方法制备的大量含固体碳酸铝的产品。 然后将所得混合物加热到足以使含碳材料的碳与含铝材料的铝反应以产生固体碳化铝的温度。 然后,固体碳酸铝能够用选自Al 2 O 3,Al 4 CO 4,AlO,Al 2 O及其混合物的铝化合物加热,以产生铝金属和一氧化碳。