摘要:
A cooling fixture for thermal spraying includes a rotatable tubular member for supporting a tubular substrate such as for an oxygen sensor. A cooling tube extends from the tubular member into an open end of the substrate so as to delimit an annular channel therein. The other end of the substrate is closed. Air is forced through the cooling tube into the substrate and thence out via the annular channel, to cool the substrate during thermal spray coating of the outside surface.
摘要:
A multi-layer protective coating for a substrate arranged in or on a vessel and method of forming multi-layer protective coating on a substrate arranged in or on a vessel. Multi-layer protective coating includes a thermal sprayed bonding layer formed on and in contact with a first face of the substrate prepared in a manner to allow the bonding layer to adhere, the bonding layer having a substrate face and a non-substrate face, a resistance layer made of a material resistant to impact forces and corrosion caused by a corrosive environment in a vicinity of the substrate arranged in or on the vessel, the resistance layer formed on and in contact with the non-substrate face of the bonding layer, the resistance layer having a bond face and a non-bond face, and a sealant layer formed on and in contact with the non-bond face of the resistance layer.
摘要:
The present invention provides a high-purity fused and crushed stabilized zirconia powder. The powder—with or without further processing, such as plasma spheroidization—is used in thermal spray applications of thermal barrier coatings (TBCs) and high-temperature abradables. The resulting coatings have a significantly improved high temperature sintering resistance, which will enhance the durability and thermal insulation effect of the coating.
摘要:
A two stage kinetic energy spray device has a first stage first nozzle having a receiving end that receives a particulate stream, an injection end located axially to the first nozzle receiving end, the injection end receiving the particulate stream from the receiving end. A second stage has a second nozzle, the second nozzle having a gas receiving portion that receives an effluent gas, a convergent portion that is downstream from the gas receiving portion and a divergent portion that is downstream from the convergent portion, the convergent portion and the divergent portion meeting at a throat. The particle stream is accelerated to a first velocity in the first nozzle located within the second nozzle divergent portion The effluent gas is accelerated to a second velocity in the second nozzle. First nozzle injection end chevrons allow mixing of particulate and supersonic effluent streams prior to exiting the spray device.
摘要:
A valve for a combustion spray gun. An apparatus includes a torsion element rotatable relative to a housing of the combustion spray gun to a charged position. The apparatus also includes a biasing element applying a force to the torsion element, which force urges the torsion element to move a valve core to an off position. The apparatus further includes an engagement mechanism configured to selectively engage and hold the torsion element in the charged position.
摘要:
The present invention provides a powder blend or composite powder that is fed into a kinetic spray device, accelerated towards a substrate or part in order to form a composite solder with thermal and electrical properties better than existing solder. The other advantages of building a solder layer in this manner include a low oxide content to improve subsequent solderability, excellent control of the deposition thickness, excellent control of the deposition chemistry and lastly, high speed of manufacture.
摘要:
A surface having an abrasive coating which includes silicon carbide (SiC) particles bound to the surface so as to form the abrasive coating. The SiC particles include a self-healing barrier layer that is in contact with an outer surface of the SiC particles. The self-healing barrier layer prevents degradation of the SiC particles.
摘要:
The invention is directed to a ceramic material for use in thermal barriers for high temperature cycling applications and high temperature abradable coatings. The material is an alloy formed predominantly from ultra-pure zirconia (ZrO2) and/or hafnia (HfO2) that has uncharacteristically high sintering resistance to achieve a high service lifetime and low thermal conductivity to achieve high operating temperatures. In the material, oxide impurities such as soda (Na2O), silica (SiO2), alumina (Al2O3), titania (TiO2), hematite (Fe2O3), calcia (CaO), and magnesia (MgO) make up no more than 0.15 weight percent. The invention provides materials to produce a coating structure so that the changes in the coating microstructure over the in-service lifetime are either limited or beneficial.
摘要翻译:本发明涉及一种用于高温循环应用的热障层和高温耐磨涂层的陶瓷材料。 该材料是主要由超纯氧化锆(ZrO2)和/或铪(HfO2)形成的合金,其具有非常高的耐烧结性,以实现高使用寿命和低热导率以实现高工作温度。 在该材料中,诸如苏打(Na 2 O),二氧化硅(SiO 2),氧化铝(Al 2 O 3),二氧化钛(TiO 2),赤铁矿(Fe 2 O 3),氧化钙(CaO)和氧化镁(MgO)的氧化物杂质构成不超过0.15重量 百分。 本发明提供了用于生产涂层结构的材料,使得在使用寿命内的涂层微结构的变化是有限的或有益的。
摘要:
The present invention provides a powder blend or composite powder that is fed into a kinetic spray device, accelerated towards a substrate or part in order to form a composite solder with thermal and electrical properties better than existing solder. The other advantages of building a solder layer in this manner include a low oxide content to improve subsequent solderability, excellent control of the deposition thickness, excellent control of the deposition chemistry and lastly, high speed of manufacture.