SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Silicon oxide films coated satellite aluminum surfaces solar absorptivity and thermal emissivity, noting suitability as temperature control coatings
Visible light-emitting p-n junctions formed in AlAs via Zn diffusion into single crystal n- type vapor grown AlAs layers
Fluorinated prepolymers are used to generate highly fluorinated polymers which possess most of the desirable properties of polytetrafluoroethylene, such as nonflammability and high corrosion resistance, while retaining good low temperature flexibility.
New polyurethanes, formed from a reaction of a prepolymer diol and a perfluorinated diisocyanate, are nonflammable and possess high corrosion resistance and good low temperature flexibility. Polymer hardness increases rapidly with increasing ratio of diisocaynate to diol, but its glass transition temperature is not adversely affected.
Vitreous material builds up as series of solidified layers on inside walls of sealed quartz ampoule containing molten constituents of material, and forms well defined shapes to close dimensional tolerances. Ampoules are made of material which does not react with melt and has lower thermal expansion coefficient than solidified layer.
Technique compresses fine ground metallic powder mixture beyond crystal fusion point. Absence of vapor pressure voids and elimination of incongruous effects permit application of technique to large scale fabrication of intermetallic compounds with specific characteristics, e.g., semiconduction, superconduction, or magnetic properties.
Hand-operated tool positions and seats window piece and conductor spacer onto conductors of two stripped cables during process of terminating cables with molded plug. Tool accommodates cables up to 3 in. wide and is used in conjunction with folding tools.
Synthesis of azine polymers for heat shields by azine-aromatic aldehyde reaction
Synthesis of high purity dianilinosilanes
Synthesis of aromatic diamines and dialdehyde polymers using Schiff base
Unfired ceramic insulation for protection from radiant heating environments
Electron irradiation induced separation of Sb from SbCl3 solutions in anhydrous alcohols, ethers, ketones, acids, ethers, and aromatic hydrocarbons
In vitro studies using boron-labeled antibodies and elemental boron as neutron target in therapy for tumors and cancer
SiO antireflection coatings for GaAs injection lasers, discussing single layer quarter-wave coatings for loss minimization and bandwidth maximization
Major advantages of soups are that they totally rehydrate in less than five minutes in water at approximately 150 deg F, maintain flavor and quality stability for two weeks in a 100 F environment, and remain stable for considerably longer at ambient temperatures. They are suitable for either household or field use.
Chemical method for separating oil from water by liquid barrier which can be positioned magnetically is described. Fluorocarbon liquids containing colloidal suspension of magnetite is proposed. Chemical composition of magnetite and fluorinated ether polymer are presented.
Calculations of mixing conditions in the vapor reaction system established criteria for reactor design. Gas mixing was optimized by jet action and vapor phase production of zinc orthotitanate has been accomplished.
Vapor phase growth and properties of semiconductor materials