摘要:
In a part for a rotary machine, a ceramic hard film is formed on a surface of a base material, the density of droplets which exist in a surface of the ceramic hard film is set to be within 1000 pieces/mm2, and the density of droplets whose mean particle diameter is 1 μm or less is set to be within 550 pieces/mm2. A method for manufacturing the part of a rotary machine is a method for forming the ceramic hard film by at least an ion plating method or a sputtering method.
摘要翻译:在旋转机械的一部分中,在基材的表面上形成陶瓷硬膜,将陶瓷硬质膜的表面存在的液滴的密度设定在1000个/ mm 2以下,密度 平均粒径为1μm以下的液滴设定在550个/ mm 2以下。 用于制造旋转机器的一部分的方法是通过至少离子镀法或溅射法形成陶瓷硬质膜的方法。
摘要:
A component for a rotary machine which is configured such that a hard film composed of ceramics and an anti-fouling film composed of a fluorine-containing diamond-like carbon film are laminated on the surface of a base material, and which has superior drain erosion resistance and fouling resistance in an environment where a gas comes in direct contact therewith.
摘要:
A component for a rotary machine which is configured such that a hard film composed of ceramics and an anti-fouling film composed of a fluorine-containing diamond-like carbon film are laminated on the surface of a base material, and which has superior drain erosion resistance and fouling resistance in an environment where a gas comes in direct contact therewith.
摘要:
In a part for a rotary machine, a ceramic hard film is formed on a surface of a base material, the density of droplets which exist in a surface of the ceramic hard film is set to be within 1000 pieces/mm2, and the density of droplets whose mean particle diameter is 1 μm or less is set to be within 550 pieces/mm2. A method for manufacturing the part of a rotary machine is a method for forming the ceramic hard film by at least an ion plating method or a sputtering method.
摘要翻译:在旋转机械的一部分中,在基材的表面上形成陶瓷硬膜,将陶瓷硬质膜的表面存在的液滴的密度设定在1000个/ mm 2以下,密度 平均粒径为1μm以下的液滴设定在550个/ mm 2以下。 用于制造旋转机器的一部分的方法是通过至少离子镀法或溅射法形成陶瓷硬质膜的方法。
摘要:
A solid particle erosion resistant surface treated coating has a solid particle erosion resistance that is largely enhanced and a rotating member having the coating gains oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine can have this coating applied thereto. The solid particle erosion resistant surface treated coating has a nitrided hard layer formed on a surface of a base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. Deformation of the base material by collisions by solid particles is prevented and cracking of the coating is prevented. Thereby, the solid particle erosion resistance is secured, life of the solid particle erosion resistant surface treated coating can be increased and oxidation resistance and fatigue strength are enhanced.
摘要:
A solid particle erosion resistant surface treated coat is provided by which a solid, particle erosion resistance is largely enhanced and a rotating member is given with an oxidation resistance without deteriorating a fatigue strength. Also, a rotating machine, such as a steam turbine, axial compressor or the like, applied with this coat is provided. The solid particle erosion resistant surface treated coat comprises a nitrided hard layer formed on a surface of base material and a PVD (physical vapor deposition) hard layer of at least one layer formed on the nitrided hard layer by a PVD method. The nitrided hard layer has a thickness of at least 30 μm. The PVD hard layer has a total thickness of at least 10 μm. Deformation of the base material by collisions by solid particles is prevented and crack of the coat comprising the nitrided hard layer formed on the base material and the PVD hard layer formed on the nitrided hard layer is prevented. Thereby, the solid particle erosion resistance is secured, life of the solid particle erosion resistant surface treated coat can be elongated and the oxidation resistance and fatigue strength are enhanced.
摘要:
Disclosed is a bearing including: a base consisting of a Cu alloy; an uneven portion formed on the base; a plating layer consisting of a ferromagnetic metal or its alloy and formed on the base so as to cover the uneven portion; and a Sn alloy layer formed on the plating layer. The surface of the Sn alloy layer constitutes a sliding surface against an object that the bearing supports.
摘要:
A hub is supported rotatably about an axis of rotation, and the diameter thereof increases from upstream to downstream sides along a fluid flow. A plurality of impeller blades extend radially outward from an outer circumferential surface of the hub. A shroud is formed in a cylindrical shape whose diameter increases from the upstream to downstream sides along the fluid flow and joins outer circumferential ends of the plurality of impeller blades. The impeller blades are composed of upstream blade segments and downstream blade segments bonded at a bonding surface extending in a direction substantially perpendicular to the axis of rotation. The upstream blade segments are integral with at least a portion of the shroud, and the downstream blade segments are integral with at least a portion of the hub. This improves the reliability and performance of an impeller and a compressor.
摘要:
An object is to provide a method for forming a superior corrosion-resistant plating layer by sealing penetrating pinholes formed in an electroless plating layer. There are provided a first plating step of performing electroless Ni—P plating on a base material (1); an etching step of etching a surface of a first plating layer (3) formed by the first plating step; and a second plating step of performing electroless Ni—P plating to form a second plating layer (5) on the first plating layer (3) processed by the etching step.
摘要:
An object is to provide a gas-compressor impeller which has excellent durability even when gas containing solid particles is compressed and which does not increase the cost. A gas-compressor impeller installed in a gas compressor that compresses gas containing solid particles has a hub portion and a plurality of blades extending substantially radially from the outer circumferential surface of the hub portion. The hub portion and the blades are rotated about the central axial line to compress gas. The blades have abrasion-resistant films only at gas inlet portions.