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WO/2021/166029A1 |
In this workpiece surface modification method, a workpiece made from pure aluminum or from an aluminum alloy is irradiated with plasma gas to increase the proportions of aluminum oxide and aluminum hydroxide on the surface of the workpiece.
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WO/2021/157869A1 |
A method for manufacturing a tubular shaft for a drive shaft having a ball spline structure for plunging comprises the steps of: spheroidizing annealing a tube member; forming a film on the surface of the tube member; forming ball groove...
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WO/2021/157868A1 |
According to a heat treatment method for a tubular shaft for a drive shaft having a ball spline structure for plunging and having an undercut area having a reduced diameter, same is treated by carburizing-austempering so that the undercu...
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WO/2020/221900A9 |
The present invention relates to a steel part for use in aeronautics, comprising a substrate, the substrate comprising at least carbon, cobalt, aluminium and nickel, and having an average atomic fraction of carbon between 0.09% and 0.17%...
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WO/2021/157644A1 |
The present invention relates to a fastening member that comprises a substrate made of an aluminum alloy and an anti-corrosion covering film that covers the substrate. The present invention is characterized in that: the anti-corrosion fi...
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WO/2021/156724A1 |
A ball for a ball valve, wherein the ball comprises a substrate of metal having surface modified portions to act as seating surfaces for a seat of the ball valve; and a seat ring for a ball valve, wherein the seat ring comprises a substr...
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WO/2021/154170A1 |
The invention relates to a powder boronizing agent developed to coat metal surfaces with a metal boride layer in high temperatures. The abrasion loss for these metals coated with a metal boride layer is reduced. Thus, the economic life o...
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WO/2021/154360A1 |
A method of strengthening a surface of a metallic member comprising nitriding the metallic member, machining the metallic member to a smoothness value of less than 1.0 micron, nitriding the metallic member a second time, and polishing th...
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WO/2021/141099A1 |
This austenitic stainless steel material has a passivation film on the surface, and the chemical composition of the austenitic stainless steel material in mass% is as follows: C: not more than 0.10%, Si: not more than 1.0%, Mn: 8.0-10.0%...
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WO/2021/138068A1 |
Described are metal bodies made of magnesium-containing metal and having a magnesium fluoride surface passivation region formed at a surface of the body, as well as methods of forming a magnesium fluoride surface passivation region at a ...
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WO/2021/130460A1 |
The invention relates principally to a method for treating a part (P) made of ferrous metal, comprising: a nitriding operation forming on the part (P) a combination layer (2) having a thickness of between 5 and 30 pm, and a diffusion reg...
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WO/2021/131162A1 |
The purpose of the present invention is to provide an iron-nitrogen-based soft magnetic steel sheet having a higher saturation magnetic flux density than pure steel, a method for manufacturing said soft magnetic steel sheet, and a core a...
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WO/2021/120390A1 |
A welding, carburizing and quenching method for a large gear. According to the method: firstly, a gear ring, a center plate, a hub and a rib plate are fixed by spot-welding, wherein the hub is subjected to welding groove forming treatmen...
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WO/2021/122520A1 |
The present invention relates to a cemented carbide comprising eta phase and a Ni-Al binder, wherein the binder comprises intermetallic ƴ'-Ni3Al -precipitates embedded in a substitutional solid solution matrix comprising Al and Ni. Furt...
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WO/2021/125887A2 |
The present invention relates to an aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and a method for manufacturing same and, more specifically, to an aluminum alloy-plated steel sheet which prevent...
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WO/2021/114068A1 |
Disclosed in the present invention is a preparation method for a TiN coating on a titanium alloy part of an aircraft engine, comprising: after a surface of a part to be sprayed is machined to a final size, performing sand blasting; clean...
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WO/2021/119425A1 |
Provided herein are methods of purifying a sample containing nucleic acids to obtain isolated nucleic acids of a desired size range and methods of sequencing nucleic acids of a desired size range. The methods include a) combining a nucle...
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WO/2021/113623A1 |
A method for treating a workpiece made from a self-passivating metal and having a Beilby layer is disclosed. The method comprises exposing the workpiece to the vapors produced by heating a reagent having a guanidine [HNC(NH2)2] moiety an...
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WO/2021/110945A1 |
The invention concerns a method for hardening parts made of nitriding steel, in which a part made of nitriding steel undergoes an initial hardening by austenitisation and quenching, followed by tempering, then a nitriding treatment in tw...
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WO/2021/106013A1 |
A method for treating (200) a surface of an implant (100), the method involves cleaning (201) the surface of an implant (100). Annealing (203) the cleaned implant (100) in a furnace at a temperature ranging from 1000°C to 1200°C in the...
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WO/2021/106085A1 |
The present invention addresses the problem of providing a steel component with pitting resistance characteristics improved to an extremely high level. This steel component has a prescribed constituent composition. At a point 0.20 mm fro...
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WO/2021/106233A1 |
Provided is a metal component having a surface layer that is resistant to heat/corrosion and wear, the surface layer having high durability with respect to repeated thermal stress. The present invention comprises a parent material that...
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WO/2021/100687A1 |
A ferritic stainless steel sheet which comprises a base material and a nitrided layer that is formed in the surface of the base material, wherein: the chemical composition of the base material contains, in mass%, from 0.001% to 0.020% of...
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WO/2021/092737A1 |
Disclosed are a wear-resistant metal material and a manufacturing method therefor. The wear-resistant metal material comprises 80.13-85.4 parts by weight of Fe, 2.67-3.38 parts by weight of Ti, 3.54-5.93 parts by weight of V, 1-2 parts b...
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WO/2021/095331A1 |
The present invention provides a nitriding treatment method for forming an iron nitride compound layer composed of an ε-phase (Fe2-3N) and a γ'-phase (Fe4N) and having excellent durability against abrasion on an iron steel material tha...
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WO/2021/075389A1 |
The purpose of this disclosure is to allow an operator or the like to more easily comprehend a carbon potential value of the atmosphere in a heat treatment furnace. A heat treatment furnace (10) according to an embodiment of the present ...
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WO/2021/072840A1 |
Disclosed in the present invention are a method for carburising and quenching an internal spline of a half shaft gear and a carburising and quenching device, the method comprising: sleeving a compensation sleeve on a half shaft gear and ...
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WO/2021/070561A1 |
The present invention addresses the problem of providing a metal material which is applicable to a constituent member of an apparatus for producing a semiconductor, while having excellent corrosion resistance. A multilayer body according...
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WO/2021/070938A1 |
The present invention is provided with: an in-furnace atmosphere gas concentration sensing device which senses the hydrogen concentration or the ammonia concentration in a treatment furnace; an in-furnace nitriding potential calculation ...
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WO/2021/070344A1 |
Provided is a die that has excellent wear resistance and erosion resistance to molten metal. The die is provided with: an iron-based die base material; a nitrogen diffusion layer provided on top of the die base material; a nitrogen com...
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WO/2021/065919A1 |
A member for plasma processing apparatuses according to the present disclosure is provided with: a base material; and a film of an oxide, fluoride, oxyfluoride or nitride of a rare earth element, said film being arranged on at least a pa...
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WO/2021/061038A1 |
Method and system for producing direct reduced metal material, comprising the steps: a) charging metal material to be reduced into a furnace space (120); b)evacuating an existing atmosphere from the furnace space to achieve a gas pressur...
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WO/2021/049709A1 |
A titanium electrode for water treatment electrolysis, according to the present invention, is for oxidizing or reducing an aqueous solution to be subjected to electrolysis by applying a positive or negative potential while immersed in th...
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WO/2021/048411A1 |
The present invention relates to methods for improving the resistance of alloys to corrosion, and in particular metal-dusting corrosion. The present invention also relates to alloys obtainable by such methods, and products formed from su...
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WO/2021/049235A1 |
The present invention addresses the problem of providing a metal material that is applicable to a constituent member of a semiconductor production device and has excellent corrosion resistance, and in particular, corrosion resistance wit...
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WO/2021/037757A1 |
The present invention relates to a method of oxygen hardening a Group IV metal, the method comprising the steps of: providing a workpiece of a Group IV metal in its final shape; oxidising the Group IV metal over an oxidising duration of ...
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WO/2021/037753A1 |
The present invention relates to a Group IV metal or alloy component having a protective oxide surface layer, the Group IV metal or alloy component having a core hardness, a diffusion zone having oxygen in solid solution in the range of ...
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WO/2021/039911A1 |
Provided is a vacuum carburization treatment method in which variations in carburization can be inhibited. In a preceding carburization step of the vacuum carburization treatment method according to an embodiment of the present invention...
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WO/2021/029014A1 |
This electromagnetic steel sheet has a principal surface and an end surface. The electromagnetic steel sheet comprises: a base material part; and an end surface nitride layer adjacent to the base material part, provided on the end surfac...
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WO/2021/020467A1 |
Provided is a fuel cell system which is capable of supplying power stably for a prolonged period of time. A fuel cell system 10 comprises a tabular electrode assembly 20, an anode fuel material 30, and a sealed container 40. The tabular ...
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WO/2021/010740A2 |
Provided according to an embodiment of the present invention is a nitriding apparatus. According to an embodiment of the present invention, the nitriding apparatus comprises: a reaction chamber in which a processing space is formed so th...
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WO/2021/005373A1 |
A mixture for coating a metal substrate to prevent or limit scale formation. The mixture comprises 20 to 90 % by weight of at least one of: an oxide ceramic material, an aluminosilicate mineral or glass frit. The mixture further comprise...
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WO/2020/260805A1 |
The invention relates to a metal core (20) for high-temperature shaping of a metal part made of titanium-based alloy. The metal core (20) has a layer of material enriched in metal carbonitride on an outer surface (23) intended to come in...
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WO/2020/255303A1 |
A steel for nitriding quenching treatment which contains 0.6% by mass or less of C, 0.4-3.0% by mass of Mn and/or Ni in total, 0.03% by mass or less of P, 0.03% by mass or less of S and one or more elements selected from among 0.1-4.5% b...
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WO/2020/248850A1 |
Disclosed in the present invention are a variable frequency speed regulating device for a vacuum carburizing process and a speed regulating method therefor. The variable frequency speed regulating device comprises a vacuum carburizing fu...
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WO/2020/244472A1 |
Provided is a methanol and propane cracking device based on radiant tubes, the device comprising several radiant tubes (1) extending into a heat treatment furnace. Each radiant tube (1) is of a U-shaped hollow tube structure, and the top...
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WO/2020/240130A1 |
The present invention relates to a method for the protection of a hafnium-free, nickel-based monocrystalline superalloy part against corrosion and oxidation. The method comprises at least the following steps of: - manufacturing a hafnium...
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WO/2020/237192A1 |
Iron nitride nanoparticles and magnet materials made from iron nitride nanoparticles are described. The iron nitride nanoparticles have a core and a shell morphology. The shell is configured to provide a means to nitride the core. The ma...
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WO/2020/226160A1 |
The purpose of the present invention is to provide a novel composite copper member. Provided by the present invention is a composite copper member which has a metal layer comprising metal other than copper formed on micro irregularities ...
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WO/2020/212883A1 |
A method for surface modification of a titanium substrate or a titanium alloy substrate comprising: a) applying at least one beta phase stabiliser to a surface of the titanium substrate or titanium alloy substrate; and b) heating the sur...
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