Abstract:Silicon Carbide deep UV detectors can achieve large gains, high signal-to-noise ratios and solar-blind operation, with added benefits of smaller sizes, lower operating voltages, radiation hardness, ruggedness and scalability. SiC UV APDs implementation is… more
Abstract:Silicon Carbide (SiC) electronics has the potential for revolutionizing the high temperature high power electronics industry. There is a strong need for tools and models for circuit design using the new SiC power devices that are coming to market. Our work in… more
Abstract:… as the only material candidate to allow these new reactor designs to come to fruition. This DOE Phase I SBIR seeks to demonstrate high purity, stoichiometric SiC/SiC CMC components made with commercially available SiC fiber and USAs first low cost, stoichiometric silicon… more
Abstract:…nd GenX used in special NASA missions. Low-density materials are ideal for use as mirrors in such applications. Beryllium has been traditionally considered ideal for lightweight mirrors requiring high rigidity. The toxicity of beryllium poses a major problem. Polished Silicon… more
Abstract:… software that uses waterjets to mill to a controlled depth. The process is being used to groove long channels in high temperature metals for scramjets, cooling channels in rocket nozzles, fluid channels in fuel cells and is even capable of milling grooves in silicon … more
Abstract:… or foreign compounds at the critical interface between the reinforcement material and the ceramic matrix, which can compromise the composite"s strength and/or chemical resistance. Such effects have been attributed to cumulative water vapor contamination of silicon … more
Abstract:Upgrades to the Bradley and Stryker vehicles and concepts for a next-generation ground combat vehicle require substantial expansion of the electrical power generation and distribution system. The upgrades must be implemented within very tight spaces, and this requires technology advances such as… more
Abstract:Silicon carbide based ceramic matrix composites may become the predominant material system from which reactor core components are manufactured. Manufacturing large, high aspect ratio, components using silicon carbide composite materials presents unique… more
Abstract:… lattice-matching ability of the AlInN alloy, it is expected that the defect density in the eventual HFETs can be reduced significantally, ultimately improving device performance and reliability. By eliminating the need to use coventional, non-native substrates such as … more
Abstract:ABSTRACT: Silicon carbide electronics technology has several advantages over conventional silicon electronics and it finds its application in several power electronics applications. However, the manufacturing of reliable SiC power devices is a critical… more
Abstract:…e these harsh environments. Sporian Microsystems has previously developed a MEM sensor technology for high temperature power system applications. Sporians sensor technology is based on the combination of advance high temperature packaging and recently developed silicon … more
Abstract:… extend fuel rod lifetime and increase fuel utilization (i.e., burn-up), but also to stave off run- away, active oxidation and melting of the rods under loss of coolant conditions. Proposed program will develop the use of a ceramic adhesive to bond monolithic silicon … more
Abstract:… capable of surviving ultrahigh temperature thermal, chemical, and mechanical environments. The use of robust materials with broad operational capability leads to simpler and lower cost designs. Current Aerojet TDACS divert valve pintle designs employ a Novoltex silicon… more
Abstract:Monolithic microwave integrated circuits (MMIC) generate ever-increasing heat loads. Foam-based cooling systems have proven beneficial for high heat dissipation with low pumping and small volume requirements. In previous work, Ultramet fabricated silicon … more
Abstract:…pectrum. This is because solar illuminated backgrounds are orders of magnitude greater than the ultraviolet radiation of interest (solar blocking filters exhibit low UV transmission and scattered light). This program will develop monolithic imaging arrays made of 4H-Silicon… more
Abstract:… cooling systems all together. In addition to utility scale energy storage, the switch module will have an ancillary benefit in heavy hybrid vehicle drive trains where operating at higher DC link voltages improve conversion efficiency and reduce weight. United Silicon… more
Abstract:During this program, United Silicon Carbide, Inc. (USCi) will develop compact SiC power device models, prepare them for industry acceptance, and gain support of the models from commercial simulator suppliers. In Phase I, we propose to develop an initial… more
Abstract:During Phase I, USCI developed a compact, high frequency, high temperature, silicon carbide (SiC) gate driver module to control SiC transistor power modules, capable of operation in the temperature range from -40 degrees C to 300 degrees C, based on our… more
Abstract:… explorations and in other performance-driven process control systems involving harsh operating conditions. Availability of reliable and inexpensive microsensors for such environments is hindered by the challenge of micromachining refractory materials, such as silicon … more
Abstract:…. Also, the long term oxidation of carbon control rods by the residual oxidizing gases in the helium coolant of the next generation nuclear plant (NGNP) has never been studied. The oxidation of both graphite and C/C composites can be mitigated by applying a silicon … more
Abstract:This Small Business Innovation Research Phase I project addresses the need for lower cost ceramic materials, specifically for reaction-bonded silicon carbide (RBSC) products. RBSC is used in a multitude of applications ranging from kiln furniture to body… more
Abstract:This Small Business Innovation Research Phase I project will determine optimal process parameters for massively parallel Laser Chemical Vapor Deposition (LCVD) of silicon carbide fibers by building on work already performed at the proposing company,… more
Abstract:This SBIR Phase I project will demonstrate monolayer and dual layer coating of SiC fiber by leveraging Laser Chemical Vapor Deposition techniques developed by Free Form Fibers for direct fiber production. Ceramic fibers, particularly SiC, must be coated in order to protect the fibers from oxidizing… more
Abstract:… existing metal tubes with an advanced ceramic material, which does not creep under load, and is stronger than the zirconium alloys, can mitigate or eliminate the distortion problem. Specifically, we will measure the key mechanical properties of our new silicon … more
Abstract:…, it reacts exothermically when exposed to emergency coolant after an accident. This behavior was a principal cause of the severe fuel damage during the TMI reactor accident and was the most likely cause of fuel damage and radioactivity release at Fukushima, Japan. Silicon … more
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