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Ultrasonic oscillation probe, method for manufacturing ultrasonic oscillation probe, and ultrasonic treatment apparatus
|| List of recent Coarsening-related patents
|Poppet valve with a formed seat, and method of making|
A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat..
|Ultrasonic oscillation probe, method for manufacturing ultrasonic oscillation probe, and ultrasonic treatment apparatus|
This ultrasonic oscillation probe is an ultrasonic oscillation probe for transmitting ultrasonic vibration. A first region where the crystal grain size is relatively small and a second region where the crystal grain size is relatively large are respectively formed in at least one place.
|Method for manufacturing a three-dimensional article|
The disclosure refers to a method for manufacturing a three-dimensional article, the method including successively building up the article from a metallic base material by means of an additive manufacturing process, thereby creating an article with a substantial anisotropy of its properties and heat treating the manufactured article at a sufficiently high temperature to reduce the anisotropy significantly by recrystallization and/or grain coarsening.. .
|Powder metallurgy method for making components|
A powder metallurgy method includes (a) forming a metallic powder into a shape, (b) thermo-mechanically forming the shape into an article having a polycrystalline microstructure, (c) heat treating the article to cause coarsening of the polycrystalline microstructure, and (d) controlling the grain size homogeneity and distribution in the article formed during coarsening in step (c) by selecting the metallic powder in step (a) to include a metallic powder particle size distribution that is truncated on fine and coarse particle size sides, the selected metallic powder particle size distribution reducing abnormal grain growth such that the polycrystalline microstructure coarsens to a predefined target grain size range.. .
|Steel for carburizing or carbonitriding use|
A steel for carburizing or carbonitriding use consisting of, by mass %, c: 0.1 to 0.3%, si: 0.01 to 0.15%, mn: 0.6 to 1.5%, s: 0.012 to 0.05%, cr: 0.5 to 2.0%, al: 0.030 to 0.050%, ti: 0.0006 to 0.0025%, n: 0.010 to 0.025%, and 0: 0.0006 to 0.0012%, and, optionally, at least one selected from mo≦0.5%, ni≦1.5% and cu≦0.4%, and the balance of fe and impurities. P and nb are p≦0.025% and nb≦0.003% respectively.
|Case hardening steel, method for producing same, and mechanical structural part using case hardening steel|
A case hardening steel, which has excellent cold forgeability and excellent crystal grain coarsening prevention characteristics after carburization, contains, in mass %, 0.05-0.20% of c, 0.01-0.1% of si, 0.3-0.6% of mn, 0.03% or less of p (excluding 0%), 0.001-0.02% of s, 1.2-2.0% of cr, 0.01-0.1% of al, 0.010-0.10% of ti, 0.010% or less of n (excluding 0%), and 0.0005-0.005% of b, with the balance consisting of iron and unavoidable impurities. The density of ti-based precipitates having circle-equivalent diameters less than 20 nm in the case hardening steel is 10-100 pieces/μm2; the density of ti-based precipitates having diameters of 20 nm or more in the case hardening steel is 1.5-10 pieces/μm2; and the case hardening steel has a vickers hardness of 130 hv or less..
|Electrode catalyst with improved longevity properties and fuel cell using the same|
Disclosed is a method for preventing metal catalyst particles supported on a support and formed of a catalytically active metal or metal-containing alloy from coarsening, the method comprising: dispersing an anti-coarsening compound having a coarsening temperature higher than that of the metal catalyst, in at least one region selected from the group consisting of interstitial spaces among the metal catalyst particles and contact sites between the support and the metal catalyst particles. The electrode catalyst is structurally stable while not causing degradation of electrochemical quality, and thus can improve the longevity properties of a fuel cell..
|Method for adding sulfur to a fuel cell stack system for improved fuel cell stability|
A method is provided for adding sulfur to a solid oxide fuel cell (sofc) stack having a ni—ysz anode to prolong the life of the sofc stack. The method includes the steps of providing a reformate stream essentially free of sulfur compounds, feeding the reformate stream to the sofc stack, and adding a predetermined amount of a sulfur compound into the reformate stream upstream of the sofc stack.
|Production method of rare earth magnet|
The method of the present invention produces a rare earth magnet, which is represented by a neodymium magnet (nd2fe14b) and neodymium magnet films with applications in micro-systems, by using a heat treatment method capable of enhancing the magnetic characteristics, particularly the magnetic coercive force. A method for producing a rare earth magnet, comprising: (a) quenching a molten metal having a rare earth magnet composition to form quenched flakes of nanocrystalline structure; sintering the quenched flakes; subjecting the sintered body obtained to an orientation treatment; and applying a heat treatment with pressurization at a temperature sufficiently high to enable diffusion or fluidization of a grain boundary phase and at the same time, low enough to prevent coarsening of the crystal grains.
|Simulation model optimization|
A method can include providing a finite element grid described with respect to a lateral coordinate axis and a depth coordinate axis to model a multilayer sedimentary basin; coarsening the finite element grid with respect to the lateral coordinate axis to provide a coarsened finite element grid; performing a backstripping and forward simulation cycle using the coarsened finite element grid to provide geometry and porosity results for the model of the multilayer sedimentary basin; refining the finite element grid with respect to the lateral coordinate axis to provide a refined finite element grid; and performing backstripping and forward simulation cycle using the refined finite element grid and at least the porosity results to provide enhanced geometry and porosity results for the model of the multilayer sedimentary basin. Various other apparatuses, systems, methods, etc., are also disclosed..
|High-frequency circuit substrate|
The invention offers a high-frequency circuit substrate that sufficiently decreases the transmission delay and transmission loss in comparison with the conventional high-frequency circuit substrate. In the offered high-frequency circuit substrate, a dielectric layer made of fluororesin is brought into intimate contact directly with a metal conductor that is used for wiring and that has a surface not subjected to coarsening treatment or primer treatment.
|Modified polyvinyl alcohol, modified polyvinyl acetal and ceramic slurry composition|
The present invention provides a modified polyvinyl alcohol enabling to produce polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization while hardly causing reaction inhibition, coloring, and particle coarsening, and a method for producing the modified polyvinyl alcohol. The present invention also provides a modified polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization, and has high elasticity, mechanical strength, and a film forming property.
|Indium target and method for manufacturing same|
Provided are an indium target capable of achieving a high deposition rate while suppressing the occurrence of arcing, and a method for manufacturing the indium target. In the process of solidification at the time of melting and casting an indium ingot, ultrasonic vibration is applied to molten indium liquid which is at least in a state immediately before solidification, and thereby, coarsening of the grain size is suppressed.
|Method and system for parallel multilevel simulation|
Exemplary embodiments of the present techniques provide methods and systems for coarsening a computational mesh, for example, for use in a reservoir simulation. An exemplary method of performing a reservoir simulation, includes generating a data representation in a storage system, wherein the data representation includes an interconnection weight that represents the magnitude of an interconnection between each of a number of computational cells in a computational mesh.
|Aerated food products|
An aerated food product is provided which includes hydrophobin. Also provided is the use of a hydrophobin in a method of inhibiting bubble coarsening in aerated food products..
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Coarsening topics: Coarsening, Simulation, Crystallize, Crystallin, Solubility, Ultrasonic, Ferritic Stainless Steel
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