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7470309 |
The present invention relates to an economically excellent method for manufacturing ultra fine tungsten carbide-cobalt composite powder having tungsten compound and cobalt compound as its raw material. More particularly, the present inve...
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7442261 |
In a method of producing an iron-based alloy containing chromium carbide, pieces of cemented carbide are added to an iron-based melt containing carbon, e.g. cast iron. Chromium, which regulates the solution of WC into the melt, is also a...
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7442225 |
The present invention provides a worked molybdenum-alloy material that can be used at higher temperatures than at least temperatures at which known TZM alloys are used. A worked molybdenum-alloy material having high strength and high to...
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7063821 |
Apparatus for producing molybdenum carbide from a precursor material includes a supply of process gas and a furnace defining at least a first heating zone and a second heating zone. The furnace heats the first heating zone to a first tem...
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6969430 |
This invention is directed to a process and apparatus for producing high productivity carburizing. A process is introduced that uses a gas mixture made up of CO, H 2 , CO 2 , H 2 O, CH 4 and N 2 , such that the product of the % CO and %...
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6908691 |
The aim of the invention is to provide a metal strip for epitaxial coating with a biaxially textured layer, this metal strip, however, being able to be produced in an uncomplicated manner and having a high tensile strength, low magnetic ...
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6471790 |
The invention relates to a process for the forming of precipitates of carbides and borides along the grain boundaries of an component made from an Ni based superalloy while in solid state. This follows from the finding that the carbides ...
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6260266 |
A silicon substrate on which a silicon dioxide film having a groove is formed is placed on a sample stage disposed in a vacuum chamber. Subsequently, a titanium film and a tungsten film are deposited sequentially on the silicon dioxide f...
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5908486 |
Austenitic stainless steels and nickel-base alloys containing, by wt. %, 0.1 to 3.0% V, 0.01 to 0.08% C, 0.01 to 0.5% N, 0.05% max. each of Al and Ti, and 0.005 to 0.10% O, are strengthened and ductility retained by atomization of a meta...
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5746803 |
A transition metal carbide-Group VIII metal powder comprising discrete particles of a transition metal carbide and Group VIII metal wherein: substantially all of the particles have a size of at most 0.4 micrometer; the transition metal c...
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5531922 |
Disclosed herein are granulated particles for magnetic particles for magnetic recording, comprising: acicular ferric hydroxide oxide particles or acicular iron oxide particles; and at least one selected from the group consisting of semis...
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5498299 |
The surface oxidation under carburization temperatures of steels during the carburization with carbon-containing gas mixtures is avoided by heating the steels to the carburization temperature under a nitrogen/hydrogen mixture or pure hyd...
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5336292 |
A sintered body of titanium-based carbonitride alloy according to the invention comprises carbonitride hard constituents in 5-25% binder phase where the hard constituents contain, in addition to Ti, one or more of the metals Zr, Hf, V, N...
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5336291 |
In order to produce easily and at low cost a metallic composite material incorporating metal carbide particles dispersed therein such that fine TiC particles and/or ZrC particles are uniformly dispersed in a matrix of Al or Al alloy, fir...
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5324366 |
A heat treat furnace system 20 for heat treating metal workpieces includes a rotary carburizing chamber 24 containing a carburizing atmosphere, a cooling chamber 40A or 40B adjacent the carburizing chamber 24, a gas barrier device 50 coo...
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5294264 |
A method of nitriding a refractory-nitride forming metal or metalloid articles and composite articles. A consolidated metal or metalloid article or composite is placed inside a microwave oven and nitrogen containing gas is introduced int...
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5192485 |
A continuous annealing line for annealing a cold-rolled strip of a ultra-low-carbon steel comprising a heating furnace for heating the strip which is fed continuously, with or without a soaking furnace following the heating furnace, a co...
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5154779 |
A method of nitriding an article of refractory-nitride-forming metal or metalloids. A consolidated metal or metalloid article is placed inside a microwave oven and nitrogen containing gas is introduced into the microwave oven. The metal ...
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5094699 |
A method of manufacturing high strength and hard metallic composite layer materials by connecting several metal layers with one another, includes forming the metal layers as flat products by rolling from a metal with low base strength, a...
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4612045 |
A method for making an aluminum nitride powder comprises atomizing a molten aluminum into a nitriding atmosphere of N 2 gas of elevated temperature and solidifying the finely divided liquid particles of aluminum which have been nitrided.
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4540447 |
This disclosure relates to swage type fasteners including a pin having a plurality of combination locking and breakneck grooves and a collar adapted to be swaged into the grooves with one of the grooves acting as a breakneck whereby the ...
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4464207 |
Through-nitrided light gage ferritic stainless steels having a dispersion of metal-nitride particles at an interparticle spacing of less than about 10 microns. The resulting material has substantially improved strength at room and elevat...
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4381955 |
There is presented gold based contact materials fabricated by internal carization and method therefor. Carburizable refractory elements are carburized by internal carburization by exposing a gold based solid solution containing the refra...
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4207120 |
The invention relates to the continuous production of steel compacts in strip form from as-atomized stainless steel powder. A porous green compact of stainless steel powder having a carbon content not exceeding 0.06% by weight is through...
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4047981 |
Internally nitrided ferritic stainless steel cold reduced strip and sheet and products fabricated therefrom having an elevated temperature creep strength and oxidation resistance superior to AISI Type 316 austenitic stainless steel, and ...
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4043839 |
A method of internally nitriding and thereby strengthening cobalt-base superalloys having at least 33% cobalt, up to 0.15% carbon, no more than 25% nickel and from 1 to 3% of nitride forming elements from the group consisting of titanium...
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4004891 |
Superalloys containing uniform dispersions of at least 0.1 volume percent of a metal nitride improve qualities of superalloys. These superalloys are produced from superalloy powders by a nitridng process utilizing a controlled atmosphere...
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3982970 |
The workability of a Group VIA metal, such as molybdenum, or an alloy of a Group VIA metal is improved by heat treating the Group VIA metal or alloy of the Group VIA metal in an environment for causing particles to be formed in the Group...
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3966511 |
A method for reducing abrasion between interacting moving parts which comprises applying an anti-abradant element between said moving parts which anti-bradant element will increase in dimensional proportions upon exposure to oxidation, s...
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3876512 |
A carburizing process consisting of using the object to be carburized as a cathode and inserting the cathode into an electrolytic bath including a melted metallic salt in which the anode is graphite.
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3313660 |
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3304175 |
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3259782 |
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3219494 |
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3145458 |
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2940880 |
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2895849 |
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2513713 |
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2493951 |
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2489839 |
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2454020 |
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2224659 |
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1394172 |
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1335094 |
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RE03920 |
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RE03222 |
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0718335 |
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0504841 |
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0498063 |
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0440139 |
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