PARTICLE SIZE DISTRIBUTION BY ELECTRICAL SENSING-ZONE COUNTER

Abstract

The objective of this study was to evaluate a method for the quality control of fine powders as an alternate method to that specified in MIL-P-27412 (USAF). The size distribution of various particles in the 3-100 micron range was studied using a counter which operates by the volumetric displacement of an electrolyte in an electrical sensing zone. The particle size distribution is affected by its compatibility with the electrolyte solution, and technique used to prepare the particles for sampling. Data obtained for size distribution was compared with data obtained by microscopic scanning, and from manufacturer's specifications. Analyses of aluminum powder, coke flour, and hydraulic oil, as well as the calibration sample ragweed pollen are given. Results show that the electrical sensing-zone counter can be used to give size distributions of a large number of 3-100 micron size particles with a good degree of accuracy, repeatability and speed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1966
Accession Number
AD0807978

Entities

People

  • Charles M. Stone

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Aluminum
  • Aqueous Solutions
  • Calibration
  • Chemical Reactions
  • Electrolytes
  • Filter Paper
  • Government (Foreign)
  • Instrumentation
  • Measurement
  • Measuring Instruments
  • Particle Size
  • Particles
  • Rocket Propulsion
  • Scanning
  • Standards

Readers

  • Polymer Science and Engineering.
  • Regression Analysis.
  • Solar Physics