Persky
Joshua Persky, Boulder, CO US
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20100247323 | Erosion barrier for thermal barrier coatings - A workpiece, such as a turbine engine component, comprises a substrate, a thermal barrier coating on the substrate, and a hard erosion barrier deposited over the thermal barrier coating. The erosion barrier preferably has a Vickers hardness in the range of from 1300 to 2750 kg/mm | 09-30-2010 |
Joshua Persky, Manchester, CT US
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20090114797 | REFRACTORY METAL CORE COATINGS - A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating includes at least one oxide and a silicon containing material. In a second embodiment, the coating includes an oxide selected from the group of calcia, magnesia, alumina, zirconia, chromia, yttria, silica, hafnia, and mixtures thereof. In a third embodiment, the coating includes a nitride selected from the group of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure. | 05-07-2009 |
Joshua Persky, Berlin, MA US
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20160099476 | SOFC-CONDUCTION - A solid oxide fuel cell (SOFC) system included high thermal conductivity materials such as copper to increase thermal energy transfer by thermal conduction. The copper is protected from oxidation by nickel electroplating and protected from thermal damage by providing Hastelloy liners inside combustion chambers. Monel elements are used in the incoming air conduits to prevent cathode poisoning. | 04-07-2016 |
Joshua E. Persky, Boulder, CO US
Patent application number | Description | Published |
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20100219325 | METALLIC COATED CORES TO FACILITATE THIN WALL CASTING - A core for investment casting processes includes a core comprising one or more ceramic materials; and an exterior layer of metal material not susceptible to oxidation under investment casting operating conditions. A method for casting a turbine engine component having an internal passageway includes the steps of forming one or more mold sections each having internal surfaces and at least one of the aforementioned cores for forming one or more turbine engine components having at least one internal passageway; assembling the one or more mold sections; introducing a molten alloy into the one or more assembled mold sections; and consuming the metal of the at least one core during the process. | 09-02-2010 |
20100276103 | Metallic Coated Cores to Facilitate Thin Wall Casting - A core for investment casting processes includes a core having one or more ceramic materials; and an exterior layer of metal material not susceptible to oxidation under investment casting operating conditions. A method for casting a turbine engine component having an internal passageway includes the steps of forming one or more mold sections each having internal surfaces and at least one of the aforementioned cores for forming one or more turbine engine components having at least one internal passageway; assembling the one or more mold sections; introducing a molten alloy into the one or more assembled mold sections; and consuming the metal of the at least one core during the process. | 11-04-2010 |
Yakov Persky, Holon IL
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20100011433 | METHOD OF CONFIGURING A SECURITY GATEWAY AND SYSTEM THEREOF - There is provided a rule-set generator and a method of automated configuration of a security gateway. The method comprises setting-up an initial rule-set; obtaining log records of communication events corresponding to the initial rule-set so as to obtain a sufficient amount of log records; transforming the obtained log records into respective rules, wherein source, destination and service fields in each rule correspond to source, destination and service values in respective obtained log record, and the action in all rules is defined as “Accept”, thus giving rise to a transformation-based rule-set; and processing the transformation-based rule-set so as to generate an operable rule-set by processing the transformation-based rule-set. | 01-14-2010 |