Abstract:… of the most important parts of a high energy mirror design, the reflective mirror surface, and the multifunctional substrate. Brimrose, in collaboration with Applied Research Laboratory of Penn State University, proposes to develop boron carbide (B4C) and silicon carbide (SiC)… more
Abstract:Very extensive R & D efforts over the past several decades resulted in several classes of high temperature composites offering potential for future hypersonic vehicles hot structures. Of particular interest is a hybrid carbon/SiC matrix composite utilizing carbon fiber. … more
Abstract:… a potential to incorporate advanced ceramic matrix composites (CMC). The key characteristics include excellent mechanical properties, excellent thermal shock resistance and ability to survive cyclic oxidation environments. Among the CMC composites carbon fiber-SiC… 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 footnote that the… more
Abstract:… 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 temperature (300 C) SiC… more
Abstract:…ootprints. The described performance would be superior to any present-day alternatives that may only be available at much lower operating temperatures with no provisions for radiation hardness. The proposed range of circuit blocks that will be fabricated in Silicon Carbide (SiC)… more
Abstract:…, 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 heating and current drive schemes, ion beam generation, and RF pre-ionizer systems. SiC… more
Abstract:Capitalizing on a strong expertise in III-Nitride epitaxy, GaN-Si power device designs, and wide-bandgap power electronics, researchers at GeneSiC Semiconductor propose a SBIR program focused on the development of 15 kW/300C-rated power converters using AlGaN/GaN-Si MOS-HFETs… more
Abstract:Silicon Carbide (SiC) semiconductors are enabling technologies which bring significant benefits to power distribution equipment for next generation ground vehicles. The high temperature performance and high temperature low on-resistance properties of SiC MOSFETs facilitate the… more
Abstract:This proposal presents a hybrid metal-CMC turbine blade. A SiC/SiC CMC airfoil section will be bonded to a single crystal superalloy root section in order to mitigate risks associated with an all-CMC blade inserted in a superalloy disk. This allows current blade attachment… more
Abstract:…ns. BENEFIT: The anticipated benefits of the porous hybrid composite thermal protection system include simultaneous thermal insulation and load-bearing capabilities and low density. The ceramic foam itself also has a lower thermal conductivity than that of the baseline SiC… more
Abstract:A significant cost and processing time reduction is realized by replacing the difficult manufacturing and machining processes associated with ceramic substrates, such as Silicon Carbide (SiC) or siliconized-SiC, with additive manufacturing or three dimensional (3D) printing. … more
Abstract:… developing a technology that will reduce cost and manufacturing time, broaden design options, and improve performance of large space optics.Primarily addressed is light weighting ULE glass mirrors for large telescope systems.While milling and cutting materials such as ULE or … more
Abstract:…nce and fuel efficiency over current metal-based designs. Physical Sciences Inc. (PSI) and the University of California Santa Barbara (UCSB will develop and utilize Integrated Computational Materials Engineering (ICME) tools that will help us design and fabricate enhanced … more
Abstract:… 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 demonstrated that enables rapid, affordable bonding of impermeable SiC… more
Abstract:… space propulsion systems to significantly increase performance and fuel efficiency over current metal-based designs. Physical Sciences Inc. (PSI) and our team members at the University of California Santa Barbara (UCSB) will develop, design and fabricate enhanced SiC-based… more
Abstract:… 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 carbide (SiC) composite… more
Abstract:… Specifically, we propose to develop a 20 W power amplifier with an associated PAE of 60% operating over the 31.5 to 34 GHz band. This will be accomplished by employing two major innovations. First, we plan to utilize wide bandgap Gallium Nitride (GaN) on Silicon Carbide (SiC)… 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 semiconductor technology in… more
Abstract:ABSTRACT: During this program, United Silicon Carbide (USCi), Inc. will develop basic analog and digital integrated circuit blocks capable of operation up to 350 oC, based on silicon carbide (SiC) complementary lateral Junction Field Effect Transistor (JFET) technology. In… more
Abstract:…, national defense, and bio-chemistry. United Silicon Carbide, Inc. proposes to develop a monolithic, solar-blind UV image sensor with 320 x 256 pixels on a 25 micron pitch with a frame rate of 50 frames per second and pixel fill factor over 80%. A silicon carbide (SiC)… more
Abstract:…ects of high power pulse loads. RCT proposes to use an innovative architecture that will draw constant power from the generator while simultaneously firing the weapon and storing electrical energy in pulse power batteries and/or super capacitors for the next shot. The use of SiC… more
Abstract:… (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 carbide faces the disadvantage of being inherently brittle while SiC… more
Abstract:In this phase-I proposal, the effect of terrestrial cosmic rays on the failure rate of commercial
1200V SiC power MOSFETs will be studied. The goal of the study is to quantify the appropriate breakdown voltage de-rating needed for SiC MOSFETs subject to cosmic rays. The failure… more
Abstract:In this Phase I research, ZeCoat Corporation demonstrated a low-stress silicon cladding process for surface finishing large UVOIR mirrors. A polishable cladding is desired for SiC optics so they may be figured in less time, and so they may be polished to levels suitable for… more
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