Abstract:… fuels. The proposed project is made possible by the confluence of advances in additive micro-fabrication that would not only transform TRISO fuel fabrication from batch to continuous manufacturing, but would also embed them in high temperature and radiation resistant … more
Abstract:An ideal transistor from a circuit designers standpoint consists of an ultra-low on-resistance, majority carrier switching, low gate current drive, and normally-off design. These features are inherent in the silicon carbide (SiC) power MOSFET, with the small… more
Abstract:In this Phase II proposal, APEI, Inc. will continue development of its patented high temperature gate driver technology, enabling the next generation of high-efficiency, high power density converters. At the conclusion of Phase II, APEI, Inc. will have designed, fabricated, and tested a high… more
Abstract:Switching power amplifiers (SPAs) have a wide variety of applications within the fusion science community, including feedback and control systems for dynamic plasma stabilization in tokamaks, inductive and arc plasma sources, Radio Frequency (RF) helicity and flux injection, RF plasma… more
Abstract:Silicon Carbide based ceramic matrix composites (CMCs) offer the potential to fundamentally change the design and manufacture of gas turbines to significantly increase performance and fuel efficiency over current metal-based designs. Physical Sciences Inc.… more
Abstract:The high temperature operation of Generation IV nuclear systems will require silicon carbide ceramic composites in the reactor core to minimize operational costs and enhance safety. Currently, no ceramic composite fabrication method has been successfully… more
Abstract:… plant highlight the need for enhanced accident tolerance. Of particular concern is the overheating of standard zirconium alloy cladding material in a loss of coolant accident (LOCA). One of the leading, high-risk/high-reward candidates for future claddings is a silicon … more
Abstract:ABSTRACT: Silicon carbide based power devices has several advantages because it can be used in very high power, high temperature, high frequency applications, where conventional silicon devices cannot be used. Despite significant advancement in SiC… more
Abstract:The use of advanced ceramic materials, such as silicon carbide, for light water reactor fuel cladding is being investigated, in part due to the increased safety margin afforded by this technology over conventional zircaloy metallic claddings. In light of… more
Abstract:… is useful in such applications because of its high melting point (2730 C), low specific weight (3.21 g/cm3), excellent mechanical strength ( & gt;600 MPa) and elastic modulus ( & gt;400 GPa), and a high thermal conductivity (490 W/m-K). Monolithic silicon … more
Abstract:Advanced Ceramic Fibers, LLC has developed a transformational enabling fiber technology for use in UHT turbine engines - alpha silicon carbide/carbon based fibers - with capability above Navy"s goal of 2700 F. Our turbine engine OEM and aerospace team… more
Abstract:Current and next-generation power systems require power devices that operate at high voltages and high frequencies beyond the reliable operating limit of the present silicon- and silicon carbide-based power devices. The material properties of AlN permit power… more
Abstract:… deposition process, the coating will be more highly adherent, dense, and wear resistant than common coatings from sputtering or arc systems. The coating architecture will begin with a base layer of chromium nitride, which will be followed by lubricious layers of silicon … more
Abstract:This Small Business Innovation Research Phase I project is designed to evaluate a novel interphase nanocoating designed for Silicon Carbide (SiC) fibers, which is intended to behave as a biomimetic immune system for high-temperature Ceramic Matrix Composites… more
Abstract:SiC power semiconductors have the capability of greatly outperforming Si-based power devices. Smaller switching and on-state losses coupled with higher voltage blocking capability, and especially its high operating temperature make SiC the ideal semiconductor for high performance, high power density… more
Abstract:This SBIR Phase I project seeks to develop an advanced, flexible, robust, high-power density, high-voltage (600 V), solid-state circuit protection device (SSCPD) through the incorporation of silicon carbide (SiC) device technology, the implementation of… more
Abstract:Arkansas Power Electronics International, Inc. (APEI, Inc.), and Moog, Inc. have allied to form a team devoted to the development of an intelligent, multi-channel, highly-miniaturized, high-temperature, Silicon Carbide (SiC) based Solid-State Energy… more
Abstract:…gy (the R & D division of Frequency Management International, FMI) proposes to deliver a comprehensive, and fully investigated & validated feasibility study (in Phase 1) for a novel approach leading to design & fabrication of extreme Environment Silicon … more
Abstract:… bearing material comprised of either glass or carbon reinforcing fibers and a benzoxazine resin chemistry in place of the current phenolic resin to replace the current cotton/phenolic composite bearing material. Nano-scale additives such as clays, silica, silicon … 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:ABSTRACT: Improving heat transfer and enhancing mechanical compliance at interfaces has significant impact on military and commercial applications. For example, silicon carbide power electronics operate at much higher temperatures (~250 oC) than their… more
Abstract:SiC power electronics are ideally suited for reducing the size and weight of power electronics systems that are used in wind power converters. Present power electronics systems require large transformers which operate a modest frequencies that prevents their use on top of the turbine tower. The… more
Abstract:…, relatively high modulus ceramic fiber reinforcement within a ceramic matrix produces a material with significantly greater toughness, flaw insensitivity, and strain capability than a monolith, while maintaining high-temperature refractory capabilities. Silicon carbide… more
Abstract:ABSTRACT: The current designs of telescopes for space borne applications use monolithic glass, beryllium, or silicon-carbide optics. With the existing optical technology, it is increasingly difficult or impossible to meet the new goals and requirements of AF, ORS, and other… more
Abstract:… billion in size as markets mature for GaN power devices, solid state lighting, and hundreds of other new applications. Even with this remarkable forecast, GaN epitaxy is still produced primarily on foreign (non-GaN) substrates, typically sapphire, silicon, or silicon … more
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