The trend in all materials is toward the control of microstructure. in ceramics and cermets the emphasis is on the reduction of crystallite size and thereby on improving physical properties. powders should be equizaxed and limited to submicron range, within a narrow and specific size distribution.… More

The ability to fabricate ceramic armor economically is dependent upon several factors including powder cost, fabrication technique, and final machine cost. candidate ceramic such as tib (2), and b (4)c do not sinter to full density. therefore, near-net shape formation is difficult and expensive,… More

Materials for spacecraft structures are required which possess high stiffness to weight ratios, along with chemical and dimensional stability in space environments. b(4)c has one of the highest ratios and can be fabricated into dense bodies. optimal compoment performance will likely required an… More

Microstructure control in advanced ceramics and composites would be enhanced by the availability of high purity, submicron powders of controlled particle size and surface chemistry. a vapor phase reaction process is proposed for investigation which has potential for economically synthesizing… More

Diamondlike multinetwork and network-crystalline atomic-scale composite coatings constitute a new class of materials with unique properties including high adhesion to virtually any substrate (including materials, crystalline and glass dielectrics, plastics), excellant thermal and diffusion barrier… More

Advanced batteries based on lithium metal sulfide cell technology are under consideration for applications such as the electric vehicle,primarily due to their high energy density capabilities. however, currently available materials limit the reliability of this battery technology for long-term use.… More

Polymeric materials are used extensively in a multitude of applications due to a unique balance of cost and structural properties. however, where thermal applications are concerned, the utilization of polymeric materials is extremely limited due to poor thermal transfer. structural polymers… More

A novel coating technology is proposed for the protection of naval weapon components. Diamondlike nanocomposites constitute a new class of materials that exhibit unique combinations of technologically interesting properties including high adhesion to vertually any substrate (including metals,… More

A new class of thin film materials, diamond-like nanocomposites (DLN), have been developed that represent a significant advance over "conventional" diamond-like carbon coatings. The co-efficient of friction of DLN is a fraction of that for DLC and diamond, and the temperature stability much higher… More

Pulse power batteries based on the high-temperature Lithium-Metal Sulphide (LiMS) system are of interest for miliary applications. However, improvements in minimized size, maximized power density, maximized life, and reduced cost are needed to meet all Army requirements. Many of the battery… More

A novel coating technology is proposed for increased wear and improved li fe and reliability of commutator bars in electrical sliding devices found in manned and unmanned underwater vehlilles. Diamond-Like Nanocomposite (DLN) coatings represent a famil Of thiWrfilms that bxhibit unique combinations… More

Exploiting the many analogies between biological neurons and the cells within a spreadsheet application, we have succeeded in constructing independtly functioning, self-trained neural network cascades that are capable of (1) forming models of their spreadsheet environment, (2) manipulating… More

Thermal batteries based on Lithium-Metal Sulfide (LiMS) technology have great potential for meeting the needs of the Navy for upsocming applications in Unmanned, Underwater Vehicles (UUV). Generally, this battery technology provides for the power and energy densities required by UUV… More

A new class of thin film coating materials, diamond-like nanocomposites (DLN) have been developed. These materials have a combination of properties making them an excellent choice for use as wear resistant coatings on mechanical cryogenic coolers for space applications. In particular, the… More

39 Diamond-Like Nanocomposites: Hard, Wear Resistant, Low Friction Coatings for Tribological Applications--Advanced Refractory Technologies, Inc., 699 Hertel Avenue, Buffalo, NY 14207-2341; (716) 875-4091 Dr. Daniel Kester, Principal Investigator Mr. Keith A. Blakely, Business Official DOE… More

A novel coating technology is proposed for increased wear and improved li fe and reliability of commutator bars in electrical sliding devices found in manned and unmanned underwater vehlilles. Diamond-Like Nanocomposite (DLN) coatings represent a famil Of thiWrfilms that bxhibit unique combinations… More

Not Available Mode S provides a means whereby a ground air traffic control (ATC) system may interrogate an aircraft equipped with a transponder. The response of the transponder allows the ground system to determine the aircraft's identity and position for ATC purposes. Mode S provides numerous… More