Quadakkers
Willem J. Quadakkers, Wiinandsrade NL
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20100104430 | Component with a Protective Layer - The invention relates to a component having a substrate and a protective layer, which consists of an intermediate NiCoCrAlY layer zone on or near the substrate and an outer layer zone which is arranged on the intermediate NiCoCrAlY layer zone, which is characterized in that the intermediate NiCoCrAlY layer zone comprises of (in wt %): 11-13% Co, 20-23% Cr, 10.2-11.5% Al, 0.3-0.5 Y, 1.0-2.5% Re and Ni balance. | 04-29-2010 |
20100136367 | Component with a Substrate and a Protective Layer - A component with a substrate and a protective layer is provided. The protective layer consists of an intermediate NiCoCrAlY layer zone on or near the substrate and an outer layer zone arranged on the intermediate NiCoCrAlY layer zone, wherein the outer layer zone has the structure of the phase β-NiAl and comprises in a weight percentage: | 06-03-2010 |
Willem J. Quadakkers, Eg Wijnandsrade NL
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20090253020 | Interconnector for a fuel cell stack and method for production - An interconnector is made of ferritic chromium steel, on which a cupriferous layer is disposed. This layer prevents interdiffusion between the chromium steel and additional components with which the interconnector has direct contact. According to the state of the art, such diffusion occurs particularly if these additional components contain nickel. In addition, the interconnector may comprise a chromium-containing oxide layer as a barrier against interdiffusion. For this purpose, the interconnector steel can also be preoxidized before applying the cupriferous layer. The interconnector has a significantly longer service life than interconnectors according to the state of the art, and it has improved electrical conductivity because the electrical contact surface thereof is free of oxides and has high transverse conductivity. | 10-08-2009 |
20120190118 | COMPONENT HAVING A PROTECTIVE LAYER THAT CAN BE MONITORED MAGNETICALLY AND METHOD FOR OPERATING A COMPONENT - A component for high-temperature use comprises a metallic base material and a non-ferromagnetic protective layer arranged thereon, which is able to form a protective oxide layer on the component surface at temperatures between 600° C. and 1100° C. A sensor material is introduced into the protective layer, wherein, in the stated temperature range, the local magnetism, notably ferromagnetism or ferrimagnetism, at the site of the sensor material is dependent on the local concentration and/or composition of the material of the protective layer in the immediate vicinity of the sensor material and/or on the cumulative temperature-time curve at the site of the sensor material. The component can be examined non-destructively, from the outside, for the local magnetism in the protective layer, which is typically between 100 μm and 500 μm thick. | 07-26-2012 |
Willem J. Quadakkers, Wijnandsrade NL
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20080245446 | Protective Layer for an Aluminum-Containing Alloy for High-Temperature Use - Alloys containing aluminium are characterised by an outstanding oxidation resistance at high temperatures, that is based on, inter alia, the formation of a thick and slow-growing aluminium oxide layer on material surfaces. If the formation of the aluminium oxide layer reduces the aluminium content of the alloy so far that a critical aluminium concentration is not reached, no other protective aluminium oxide layer can be formed. This leads disadvantageously to a very rapid breakaway oxidation, and the destruction of the component. This effect is stronger at temperatures above 800° C. due to the fact that, often at this point, metastable Al | 10-09-2008 |
20090104494 | Creep-Resistant Ferritic Steel - Provided is a ferritic steel that is particularly creep-resistant at temperatures from 600 to 1000° C. The ferritic steel comprising precipitations of an intermetallic phase of the Fe | 04-23-2009 |
Willem J. Quadakkers, Eg Wijnandsrade DE
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20160087269 | ELECTROCHEMICAL STORAGE MATERIAL AND ELECTROCHEMICAL STORAGE DEVICE FOR STORING ELECTRICAL ENERGY, COMPRISING SUCH A STORAGE MATERIAL - A storage material for storing electrical energy by reduction or oxidation of an active component, wherein the storage material, in addition to the active component, additionally has a reactive framework structure in at least a reduced and/or oxidized form, which is capable of chemically integrating at least one form of the active component in the form of a mixed oxide or an alloy into the framework structure during the charging or discharging process. This integration can occur in the case of an oxidic framework structure, in particular, in the formation of at least one stable mixed oxide of the active component and an oxide from the framework structure. In the ease of the metallic framework structure, the integration occurs by forming an alloy of active components and at least one metal of the framework structure. The capability of the framework structure to integrate the active component is dependent on the general conditions of temperature and oxygen partial pressure. | 03-24-2016 |
Willem Joe Quadakkers, Eg Wijnandsrade NL
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20140219855 | HEAT-RESISTANT IRON-CHROMIUM-ALUMINUM ALLOY WITH LOW CHROMIUM VAPORIZATION RATE AND ELEVATED THERMAL STABILITY - An iron-chromium-aluminum alloy with improved heat resistance, low chromium vaporization rate and good processability, comprising (in % by mass), 2.0 to 4.5% Al, 12 to 25% Cr, 1.0 to 4% W, 0.25 to 2.0% Nb, 0.05 to 1.2% Si, 0.001 to 0.70% Mn, 0.001 to 0.030% C, 0.0001 to 0.05% Mg, 0.0001 to 0.03% Ca, 0.001 to 0.030% P, max. 0.03% N, max. 0.01% S, remainder iron and the usual melting-related impurities. | 08-07-2014 |
William J. Quadakkers, Wiinandsrade NL
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20080206595 | Highly oxidation resistant component - An oxidation resistant component is disclosed comprising a substrate and a protective layer. The protective layer consists of an inner MCrAlY layer contiguous with the substrate and an outer layer consisting of at least Ni and Al and having a β-NiAl structure. | 08-28-2008 |