Abstract: A magnet having high mechanical strength, and resistance to corrosion, which may be machined and polished to a metallic gloss is made by mixing, molding and hot extruding of a manganese-aluminum raw material, which may contain Mn, C, Ni and Al, and a powder of a far-infrared radiation material such as tourmaline, black lead, and zirconium silicate.

Abstract: A process for recovering valuable components of a residue from a stream of used catalyst, discharged from a plant for the liquid-phase, homogeneously catalyzed oxidation of alkylaromatic compounds under pressure, to produce polycarboxylic aromatic acids. The residue containing mainly cobalt (Co) and manganese (Mn) compounds is injected into a molten metal bath in combination with enough oxygen gas to convert essentially all carbon in the residue mainly to CO. The residue may also be sludge from a pond in which the residue is stored. The Co content of the molten metal is determined by how much of the Mn in the residue is to be rejected from the molten metal. The Mn rejected is distributed between a slag overlying the molten metal and the effluent which leaves the bath. In the slag, the Mn is trapped as manganese oxide (MnO); in the effluent Mn leaves as manganese dibromide (MnBr.sub.2).

Abstract: Thick opaque ceramic coatings are used to protect delicate microelectronic devices against excited energy sources, radiation, light, abrasion, and wet etching techniques. The thick opaque ceramic coating are prepared from a mixture containing tungsten carbide (WC), tungsten metal (W), and phosphoric anhydride, i.e., phosphorous pentoxide (P.sub.2 O.sub.5), carried in an aqueous alkanol dispersion of colloidal silica and partial condensate of methylsilanetriol. The coating is pyrolyzed to form a ceramic SiO.sub.2 containing coating. A second coating of plasma enhanced chemical vapor deposited (PECVD) silicon carbide (SiC), diamond, or silicon nitride (Si.sub.3 N.sub.4), can be applied over the thick opaque ceramic coating to provide hermeticity. These coatings are useful on patterned wafers, electronic devices, and electronic substrates. The thick opaque ceramic coating is unique because the methyl silsesquioxane resin is resistant to etching using wet chemicals, i.e., acids such as H.sub.3 PO.sub.4 and H.sub.

Abstract: Disclosed are a hydrogen storage alloy which contains carbon in a proportion of from 30 to 500 ppm and is represented by the stoichiometric formula A.sub.x B.sub.5.0, wherein A is La or a mixture of La with at least one rare earth metal other than La, B is at least one metal selected from a group consisting of Al, Co, Cr, Cu, Fe, Mn, Ni, Ti, V, Zn and Zr, and x is a rational number in the range 0.95.ltoreq..times..ltoreq.1.00; and has a texture in which only the intermetallic compound phase named AB.sub.5 phase is present and every other intermetallic compound phase is absent: and a method of producing said alloy and an electrode using the same.

Abstract: Spray cast copper-manganese-zirconium alloys are disclosed. In one embodiment, the alloy is spray cast in nitrogen and contains from about 1 ppm to about 20 ppm of dissolved nitrogen. In a second embodiment, the alloy contains an addition selected from the group consisting of chromium, titanium, erbium and mixtures thereof. The alloys are useful for sound damping as the combination of zirconium and the addition inhibits degradation of the specific damping capacity of the alloy.

Abstract: An alloy based on copper, manganese and aluminum, said alloy further containing iron and nickel, besides unavoidable impurities, with less than 7% by weight zinc and possible other metals, which alloy is formed of 10-55% by weight manganese, 4-10% by weight aluminum, 0.5-5% by weight iron, 2-8% by weight nickel and 0.5-2.5% by weight titanium, the balance being copper.

Abstract: Galvanic protection of steel is provided by means of coupling thereto of zinc binary alloys of Zn/8 to 18% wt. Co or Zn/20 to 50% wt. Mn with teachings of method of protection, the protected steel having the alloy coupled thereto, as well as the alloys per se. Also, a technique for determining alloys useful for the cathodic protection is taught with the technique including determining the critical cathodic protection potential for steel and the galvanic current and corrosion potential for candidate binary Zn alloy compositions followed by coupling to the steel of one such alloy composition whose determined corrosion potential is lower than the critical corrosion potential for the steel in the corrosive environment in which protection is sought.

Abstract: Hydrogen absorbing ZrMn2 alloys having MgZn2-type Laves phase structure with its Mn partially substituted by Co and containing Al as an additive and having the composition Zr(Mn1-=xCox)y Alz;Hydrogen absorbing ZrMn2 alloys having MgZn2-type Laves-phase structure with its Mn partially substituted by Co and Zr partially substituted Zr1-wTiw(Mn1-xCox)y Alz; andHydrogen absorbing alloys formed from ZrMn2 alloy having MgZn2-type Laves-phase structure or from a multicomponent alloy made therefrom by partially substituting the Zr and Mn with some other element, by further adding thereto at least one element or rare earth, Ca, and Mg.

Abstract: Molded bodies of SiC ceramic can be firmly bonded to each other or to mol bodies of other ceramic material or to metal workpieces by the establishment of diffusion-welding conditions when a metal alloy layer is interposed between cleaned and polished surfaces that are to be joined. The alloy metal of the layer is MnCu or MnCo or multi-component alloys containing the foregoing as a base and additions of other metals to a total percentage not exceeding 70% with each single other metal being present in the range from 2 to 45% by weight. Such other metals constitute 1 or more of Cr, Ti, Zr, Fe, Ni, V and Ta. The Mn, Cu alloy or alloy base has a Cu content from 10 to 90%, preferably 25 to 82% and the MnCo alloy or alloy base has a cobalt content of 5 to 50% by weight. MnCuFe eutectic compositions containing 5 to 30% by weight Fe and 10 to 90% by weight Cu and MnCoCr eutectic compositions with chromium content from 2 to 45% by weight are preferred, especially 50:40:10 MnCuFe and 60:30:10 MnCoCr.

Abstract: A coating for metallic faces comprising an alloy of aluminum with at least one of zinc, cadmium or manganese is proposed, whereby the alloy coating is applied onto the metal surface by means of electrodeposition using a non-aqueous electrolyte. The electrolyte comprises toluene as a solvent for chlorides of the alloy components. The coating may be used e.g. for corrosion protection.

Abstract: An amorphous silicon photoreceptor for electrophotography which provides a very clear image is obtained by forming its electroconductive substrate with an aluminum-manganese alloy.

Abstract: There is provided a process for producing a high-manganese iron alloy from a manganese ore and/or a pre-reduced product thereof in a top and bottom blown converter type reaction vessel holding molten iron or a molten manganese iron alloy, together with a molten slag, said molten iron or alloy and said molten slag being the products of a separate smelting furnace, gas being blown into said vessel through a bottom blowing nozzle, said process comprising charging said vessel with a supply of raw materials including at least one source of manganese and iron selected from a manganese ore containing manganese oxide and iron oxide and a pre-reduced product thereof, a solid carbonaceous substance and a slag forming agent, while simultaneously blowing gas selected from oxygen and a gas containing oxygen into said vessel through a top blowing lance to burn said carbonaceous substance so as to heat, melt and reduce said raw materials to form a melt containing manganese oxide and iron oxide; supplying an additional carbo

Abstract: The invention relates to a method of manufacturing a hydrogen-storing alloy based on the Laves phases AB.sub.2, where A is titanium and/or zirconium, and B is one or more elements from the remainder of the transition metal series, wherewith the ratio of the atomic radii of A and B, r.sub.A /r.sub.B, is between 1.05 and 1.68. This is run by melting in vacuum or under a protective gas.

Abstract: A process for the production of ferromanganese from iron-containing manganese ores, in which the reduction of the ore, which is mixed with coal and slag-forming constituents, is conducted in a rotary kiln at 1200.degree. to 1350.degree. C. in the presence of a CO-containing atmosphere for 20 to 240 minutes, and in which melting follows in a melting furnace at 1400.degree. to 1600.degree. C. By this process, the greatest part of the gangue of manganese ore can be separated off before melting the reduced ore.

Abstract: Low grade ores, such as low-grade manganese ore, are reduced in an electric smelting furnace having two melting zones divided by a barrier. The ore and a small quantity of carbon are melted in the first zone at a temperature sufficient to reduce the iron oxide contained in the ore to molten iron, leaving molten layers of ore and slag which are richer in manganese than the starting material. The melt and slag are allowed to flow over the barrier to the second zone where a second charge of ore and a greater amount of carbon are deposited. Electrode melting in the second zone is carried out at a higher temperature to reduce the manganese and remaining iron therein to form a high-grade ferromanganese product. The molten products are tapped from the furnace in the respective zones. The method of the present invention may be used with other ores such as low grade chromium ore and the method may also be used for the production of silicomanganese.

Abstract: Alloys consisting of from 64 to 77 atomic percent of manganese with the remainder zirconium are not suitable without further processing as a material for storing hydrogen at technically desired pressures. This property can be advantageously influenced by a heat treatment until a homogeneous C14 type of Laves phase has been obtained.

Abstract: A hydrogen storage material is described which comprises an alloy of the composition of 25 to 30.9% by weight of Ti, about 10 to about 42% by weight of V and about 27.1 to about 65.1% by weight of Mn. The proviso is that more than 2 up to at most 2.2 atoms are present per titanium atom. Up to about 40%, preferably about 10 to about 40%, of the vanadium atoms can be replaced by iron atoms and up to about 10%, preferably about 3 to about 10%, can be replaced by aluminum atoms, but not more than about 40% of the vanadium atoms in total are replaced. Moreover, in place of titanium, a mixture can be used in which up to about 20% of the titanium fraction are replaced by Ca, Y, La, misch metal, or mixtures thereof. Up to about 0.2 atom of Cr per the titanium atom, up to about 0.1 atom of Ni per titanium atom and up to about 0.05 atom of Cu per titanium atom can also be present, but not more than about 0.1 atom of Ni plus Cu, these atoms replacing the same number of vanadium atoms.

Abstract: An electroslag remelting process for manganese-base alloys. The process includes the steps of: partially immersing a consumable electrode of a manganese-base alloy in a layer of molten slag and passing current between the consumable electrode and a second electrode. The current is passed through the slag layer under conditions which gradually melt the consumable electrode so that drops of molten metal from the consumable electrode move downwardly through the slag layer and resolidify as an ingot thereunder. The slag is characterized by a fusion temperature of more than 300.degree. F. (149.degree. C.), and often more than 350.degree. F. (177.degree. C.), above the melting point of the consumable electrode. It is preferably comprised of Al.sub.2 O.sub.3, CaO and CaF.sub.2.

Abstract: A permanent magnetic alloy characterized in that phosphorus of 0.6% or less by weight is added with respect to an Mn--Al--C alloy of 100% by weight comprising manganese of 68.0% to 73.0% by weight, carbon of (1/10)Mn--6.6)% to (1/3Mn--22.2)% by weight, and the remainder aluminum.

Abstract: A Mn-based alloy is disclosed. The alloy is comprised of 4 to 30 atomic % of at least one element selected from the group consisting of Al, Ni, and Cr; 1 to 15 atomic % of C, 30 atomic % or less of at least one element selected from the group consisting of Co, Mo, W, Ta, Nb, V, Ti, and Zr; and the balance of alloy making up 100 atomic % being comprised substantially of Mn. The alloy has a nonequilibrium austenite phase. The alloy disclosed has high ductility and workability. The alloy is capable of being cold worked and has excellent tensile strength. The Mn-based alloy can be produced at substantially the same cost as any Fe-based alloy. The disclosed alloy is a nonmagnetic alloy which has been found to be very useful for nonmagnetic electromagnetic parts and composite materials.

Abstract: A quaternary alloy consisting of zirconium, titanium, manganese and iron is characterized in having C14 hexagonal crystal structure and ZrMn.sub.2 stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.1-x Ti.sub.x Mn.sub.2-y Fe.sub.y wherein "x" has a value between 0.05 and 0.3 and "y" has a value between 0.1 and 1, are particularly suitable for use as hydrogen storage materials.

Abstract: A ternary alloy comprised of zirconium, manganese and a third element selected from cerium, praseodymium and neodymium is characterized in having AB.sub.2 hexagonal crystal structure and stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.x-1 M.sub.x Mn.sub.2 wherein "x" has a value between zero and about 0.3 and M is one of the selected metals, are particularly suitable for use as hydrogen storage materials.

Abstract: Contaminated iridium is refined by alloying it with an alloying agent selected from the group consisting of manganese and an alloy of manganese and copper, and then dissolving the alloying agent from the formed alloy to provide a purified iridium powder.

Abstract: The invention relates to a process for obtaining manganese- and silicon-based alloys by silico-thermal means in a ladle.An oxidized liquid slag, usually originating from earlier metallurgical operations and still containing from 10 to 40% of manganese in the form of MnO is treated by a silicon-based reducing alloy (silicon content of at least 60% and preferably at least 70%) with agitation.A slag which is substantially exhausted of manganese and a metal containing more than 60% and generally more than 70% of manganese and from 5 to 40% and preferably from 10 to 35% of silicon are thus obtained.

Abstract: This invention relates to special ferromanganese type master-alloys, such as normally are added to steels during the process of melting and/or deoxidation, except that in the new master-alloy substantial amounts of zirconium and boron are added to make the new material especially suitable as an addition for boron in various boron-containing steels.A typical aim composition for the new Fe-Mn-Zr-B master-alloy would be about 20% Fe, about 40% Mn, about 35% Zr, about 2.5% B, about 2.0% C, and the balance residual elements with preferably not more than about 0.5% Al. It can be noted that the ratio of the Zr to the B contents is about 14:1. This means that for a steel addition of 0.0025% B, an amount of 0.035% Zr would be available in the steel to enhance the hardenability contribution of the B to the steel and to prevent "fading" of the boron during the heating operations.

Abstract: There is described an alloy metal hydride for storing and releasing hydrogen at predetermined temperatures and pressures intended for storing and transporting said hydrogen and also for use as a hydrogen supply source of a fuel cell and fuel electrode. The alloy of this invention consists of 30 to 80 percent by weight Ti and 20 to 70 percent by weight Mn having a high dissociation pressure, easy hydrogen activation, low heat of formation of hydrides and a very fast rate of absorption and desorption, also the alloy is of light weight and of low cost, therefore being of great industrial use.