Method of producing FeSiAI alloys wherein a carbonaceous rock with an ash content >50% to <65%, is being mixed with quartzite, iron-bearing material, and wood chips, if required, high volatile coal, in a preset ratio of the charge components and the homogenized charge material is being loaded into a melting furnace for melting of FeSiAI alloy, the charged carbonaceous rock can contain i.a. the following chemical composition in the mineral part (ash): Fe.sub.2O.sub.3 1.5-4.5% SiO.sub.2 55-65% Al.sub.2O.sub.3 25-35%, especially 32-34% CaO 0.3-3% MgO 0.3-2% TiO.sub.2 up to 1.5 S>0-0.4%, especially 0.01-0.06% P 0.01-0.05%

A low-cost high-coercivity LaCe-rich neodymium-iron-boron permanent magnet, and a preparation method therefor and the use thereof are provided. The permanent magnet is prepared by mixing and sintering an LaCe-free and HRE-free neodymium-iron-boron main phase alloy and an LaCe-M alloy. An LaCe-free main phase alloy and an LaCe-M auxiliary phase alloy are respectively smelted at first, and then, the same are subjected to powder preparation, mixing, pressing, and sintering, thereby avoiding LaCe entering main phase crystal grains. The depth and concentration of HRE diffused into the magnet are effectively improved by using the characteristics of a low melting point and high flowability of an LaCe-rich crystal boundary phase, thereby improving the uniformity of components and structure distribution in the magnet.

To produce manganese containing ferroalloy for steel production, an agglomeration mixture is produced which comprises chromite ore concentrate and manganese ore fines with a grain size smaller than 6-9 mm. The mixture is agglomerated to produce green agglomeration products, such as pellets or other types of agglomerates. The green agglomeration products are sintered in a steel belt sintering furnace to produce either sinter or sintered pellets. The sinter or sintered pellets are smelted in a submerged arc furnace to produce manganese and chromium containing ferroalloy. The ferroalloy produced by the method comprises 6.0-35 w-% manganese and 31-54 w-% chromium.

A method and system for recovering a high yield of low carbon ferroalloy, e.g., low carbon ferrochrome, from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.

Components suitable for chemically aggressive environments are disclosed, as well as methods for producing the components. One component may include a substrate having at least one surface having a layer system, which may include an amorphous carbon layer. The layer system may include at least one metallic intermediate layer which is arranged between the substrate and the amorphous carbon layer. The metallic intermediate layer may include titanium, a titanium alloy, nickel, or a nickel alloy. A two-layer bonding layer may be arranged between the at least one intermediate layer and the substrate and a first bonding layer composed of NiP. A second bonding layer composed of a nickel-chromium alloy or a nickel-vanadium alloy may also be present. The amorphous carbon layer may form an outer layer of the layer system facing away from the substrate and may comprise at least one amorphous hydrogen-containing carbon layer.

A high strength and corrosion resistant ferrochrome alloy bulk is disclosed, which comprises, in weight percent: 30-68% Cr, 1.5-8% Ni, 1.6-6% C, and the balance Fe and incidental impurities, of which a Fe/Ni ratio is in a range from 5 to 10 and a Cr/C ratio is in a range between 10 and 33. Experimental data reveal that, samples of the high strength and corrosion resistant ferrochrome alloy bulk all possess hardness above HV400 and excellent corrosion resistance due to the high content of Cr. As a result, experimental data have proved that the high-strength and corrosion-resistant ferrochrome alloy bulk of the present invention has a significant potential to replace conventional high-strength stainless steels, so as to be widely applied in various industrial fields, e.g., aviation, transportation, marine facility components, chemical equipment and pipe fittings, engine parts, turbine blades, valves, bearings, building materials, and so on.

The invention relates to a method for producing a ferroalloy containing nickel. From a fine-grained raw material containing iron and chromium and a fine-grained raw material containing nickel, a mixture is formed with binding agent, the mixture is agglomerated so that first formed objects of desired size are obtained. The objects formed are heat treated in order to strengthen the objects so that the heat treated objects withstand conveyance and loading into a smelter furnace. Further, the objects are smelted under reducing circumstances in order to achieve ferrochromenickel, a ferroalloy of a desired composition containing at least iron, chromium and nickel.

Amorphous steel composites with enhanced mechanical properties and related methods for toughening amorphous steel alloys. The composites are formed from monolithic amorphous steel and hard ceramic particulates, which must be embedded in the glass matrix through melting at a temperature above the melting point for the steel but below the melting point for the ceramic. The ceramics may be carbides, nitrides, borides, iron-refractory carbides, or iron-refractory borides. The produced composites may be one of two types, primarily distinguished by the methods for embedding the ceramic particulates in the steel. These methods may be applied to a variety of amorphous steels as well as other non-ferrous amorphous metals, and the resulting composites can be used in various applications and utilizations.

Please cancel the abstract of this application and replace it with the following amended abstract presented in clean form according to the procedures outlines in MPEP 714 (II) (B):

A corrosion-resistant steel bar and a preparation method, in percentage by weight, the corrosion-resistant steel bar comprises 0.03% to 0.15% of C, 0.8% to 2.0% of Si, 0.8% to 2.0% of Mn, 0.10% to 0.50% of Cu, 0.08% to 0.2% of P, 0.005% to 0.01% of S, 0 to 0.1% of Nb, 0 to 0.2% of V, 0 to 0.1% of Ti, 0 to 0.1% of Al, and the balance of Fe and inevitable impurities; wherein, 0.6Si/Mn2.0, 0.25%(Cu+P+S)0.62%. Through the design of Si, Mn, Cu, P, S and other alloying elements, considering the strengthening function and corrosion resistance function of each element, the present application solves the problem that the corrosion resistance, mechanical properties and cost of the prior art cannot be achieved together, and overcomes the technical bias in the prior art that Cr, Ni or Mo must be added for improving the corrosion resistance.

Exemplary articles may comprise a surface alloyed layer, a base metal comprising a steel, and a transitional layer between the surfaced alloyed layer and the base metal. The surface alloyed layer may comprise nickel (Ni), chromium (Cr), manganese (Mn), molybdenum (Mo), silicon (Si), or combinations thereof. Exemplary methods of making an article may comprise coating a portion of a sand mold with a metal slurry, pouring a molten steel alloy onto the sand mold, and removing the article from the sand mold.