Cabot Corporation

About: Cabot Corporation is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Carbon black & Carbon. The organization has 1279 authors who have published 1399 publications receiving 36736 citations.

Methods of making a niobium metal oxide

Abstract: Methods to at least partially reduce a niobium oxide are described wherein the process includes heat treating the niobium oxide in the presence of a getter material and in an atmosphere which permits the transfer of oxygen atoms form the niobium oxide to the getter material, and for a sufficient time and at a sufficient temperature to form an oxygen reduced niobium oxide. Niobium oxides and/or suboxides are also described as well as capacitors containing anodes made from the niobium oxides and suboxides.

Analysis of Gas-Solid Particle Flows in Shock Tubes

Abstract: Theme T use of shock tubes for experimental investigations of high-speed suspension flows has motivated the development of a corresponding numerical calculation procedure. The Particle-In-Cell (PIC) method has been adapted to handle suspension flows by treating each phase as a set of discrete "mass points." As in the single-phase PIC calculation the flowfield is divided into small regions fixed in space (cells), but in the modified procedure phase interactions are incorporated into the equations for the changes in the properties of the materials occupying the cells. Details of the calculation are given in Ref. 2. The purpose of this study was to investigate the dependence of the calculated results on the assumed phase interaction (drag and heat transfer). The behavior of suspension flows in shock tubes also was investigated for the limiting case of problem times that are large compared with the characteristic velocity and thermal equilibration times. In this case, there exists a zone behind the shock within which the phases are in velocity and thermal equilibrium. These equilibrium properties, as well as the equilibrium shock speed, can be calculated by applying the shock tube equations to an "equivalent gas" defined in terms of the properties of the suspension, thereby providing a check on the calculated flow properties.

Coated silver-containing particles, method and apparatus of manufacture, and silver-containing devices made therefrom

Abstract: Provided are silver-containing powders and a method and apparatus for manufacturing the silver-containing particles of high quality, of a small size and narrow size distribution. An aerosol is generated from liquid feed and sent to a furnace, where liquid in droplets in the aerosol is vaporized to permit formation of the desired particles, which are then collected in a particle collector. The aerosol generation involves preparation of a high quality aerosol, with a narrow droplet size distribution, with close control over droplet size and with a high droplet loading suitable for commercial applications.

Process for preparing organically modified aerogels in which the salts formed are precipitated out

Abstract: The invention concerns a process for preparing organically modified aerogels, in which: a) a silicic acid sol having a pH of ≤ 4.0 is prepared from an aqueous sodium silicate solution using at least one organic and/or inorganic acid; b) the resultant silicic acid sol is polycondensed to form an SiO2 gel by the addition of a base; c) the gel obtained in step b) is washed with an organic solvent until the water content of the gel is ≤ 5 wt.%; d) the gel obtained in step c) is surface-silylated; and e) the surface-silylated gel obtained in step d) is dried. The process is characterized in that the at least one acid forms salts with the sodium silicate cations in the silicic acid sol, which salts are difficult to dissolve. Before step b) the salts produced which are difficult to dissolve are precipitated out to the greatest extent possible and separated from the silicic acid sol.