tap density

tap density

[′tap ‚den·səd·ē]
(metallurgy)
The apparent density of a volume of metal powder obtained when its receptacle is tapped or vibrated.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The tap density is calculated in g per mL using the formula m/[V.sub.f], in which [V.sub.f] is the final tapped volume.
According to the relevant provisions of the "Test Methods of Aggregate for Highway Engineering" (JTG E42-2005) [28], the natural stacking density and tap density of each type of aggregate are measured to determine the packing mode that is more helpful to the formation of the aggregate skeleton structure.
Some of these properties include bulk density, tap density, compressibility, particle size and size distribution, fluidization, flowability, cohesion, angle of internal friction, and angle of wall friction.
Tap density also called packed density is the density of a powder, it describes the bulk density of a powder after compression by tapping the container of powder a number of times, to settle content in a container, usually a graduated glass cylinder container, under specified conditions, where bulk density of a powder describes the weight or mass of powder in a specified volume.
Tap density was determined by tapping the powder 300 times using a standardized tapping procedure of 38 taps per minute [6].
* Milled roller compacted blends: Ratios of granules to fines, bulk and tap density, Carr index and flow properties, and
Tapped densities of powder samples were determined by a tap density apparatus (Intelli, Kshitij Innovations, India).
But the tap density of active material dramatically decreases after only a little amount of carbon coating [10, 11].
Hausners Index was calculated as the ratio of tap density to bulk density of the samples (3, 4)
The granules of formulations (Fl and F2) were tested for flow properties such as bulk density, tap density, Hausner ratio, compressibility index, and angle of repose [Table 2].
During the production of alkaline batteries, where the cathode is compressed into shape, particle size and distribution of the material will also affect tap density and ease of processing.