Materials & Coatings


Briefs: Materials
Composite Graphite Anodes Containing Cyclic Ether Additives

Scientists have developed a type of composite graphite anode that will benefit the U.S. space program and private industry by increasing the rechargeability of lithium-ion batteries....

Briefs: Materials
Polypyrrole and Polyaniline Doped With Lignosulfonic Acid

Experiments have shown that electrically conductive polymers with water-soluble fractions can be synthesized by polymerization of pyrrole or aniline in the presence of lignosulfonic acid,...

Briefs: Materials
Tribological Characterization of Solid Surfaces

Reports labeled as chapters 2, 3, 4, 7, 8, 9, and 10 of a NASA technical memorandum that addresses topics in tribology have been compiled into a document that emphasizes those aspects of the...

Briefs: Materials
Improved Accelerated Corrosion Testing of Zinc-Rich Primers

An improved method of accelerated testing reduces the time needed to analyze the abilities of zinc-rich primers to protect steel substrates against corrosion in a seacoast environment. In...

Briefs: Materials
Protective Shells for Composite Overwrapped Pressure Vessels

White Sands Test Facility (WSTF) scientists have developed an energy-absorbing laminated shell that is a prototype of lightweight, inexpensive, and removable covers to shield...

Briefs: Materials
Nonevaporable Getters To Maintain Vacuum in Sealed MEMS

Nonevaporable getters have been proposed for use in maintaining vacuum inside hermetically sealed microelectromechanical systems (MEMS) that rely on vacuum for proper operation. A vibratory...

Briefs: Materials
Update on Electrolytes for Low-Temperature Lithium Cells

A report presents results of research on carbonate-based electrolytes to improve the low-temperature-performances of lithium-ion rechargeable electrochemical cells. The loss of performance...

Briefs: Materials
Reducing Methanol Crossover in CH3OH-Fuel-Cell Membranes

Improved polymer electrolyte membranes for direct methanol fuel cells can be made by impregnating the baseline membrane material with cross-linked polystyrene (a copolymer of styrene and...

Briefs: Materials
Composite-Material Heat Sink for Printed-Circuit Boards

A laminated composite-material plate has been developed for use as a lightweight heat sink and mechanical support for rigid printed-circuit boards (PCBs) that hold surface-mounted electronic...

Briefs: Materials
Electrodialysis To Remove Ammonium Ions From Wastewater

Electrodialysis has been shown to be an effective means for removing ammonium ions from wastewater without use of consumable chemicals and without adding other substances to the treated...

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