Accession Number : ADD006729

Title :   Method and Apparatus for Measuring Adhesion of Particulate Materials.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kraeutle,Karl J

Report Date : 17 Jul 1979

Pagination or Media Count : 6

Abstract : Apparatus and a method are disclosed for measuring adhesion of particulate materials. A geometric object, such as a steel ball, is immersed in a sample of particulate material which is compacted to a predetermined density. The temperature of the sample is carefully controlled while the steel ball is pulled from the sample. The force required to pull the ball from the sample at a given temperatue is recorded. Numerous tests conducted at different temperatures provide data to define a characteristic curve for a given particulate material. The apparatus and method is particularly useful for measuring the adhesion of aluminum powder such as that used as fuel in rocket motor solid propellant. (Author)

Descriptors :   *Patents, *Powder alloys, *Aluminum alloys, *Adhesion, *Test methods, Steel, Particulates, Measurement, Immersion, Geometric forms, Test equipment, Temperature, Density

Subject Categories : Metallurgy and Metallography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE