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pycnometry

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006107
EISBN: 978-1-62708-175-7
... Abstract This article focuses on the theory, advantages, and limitations of various methods used for the determination of surface area, density, and porosity of powder. These include gas adsorption, permeametry, pycnometry, and mercury porosimetry. Information on various equipment used...
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Published: 15 June 2020
Fig. 33 Microstructures of pure copper melted with (a) standard raster strategy and (b) spot melting strategy. Both samples exceed 99.95% density as measured by helium pycnometry. More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003442
EISBN: 978-1-62708-195-5
..., “Density of Plastics by the Density-Gradient Technique.” This method is very accurate when performed correctly, but requires skill and practice to obtain optimal results. It is less commonly performed in actual practice. Helium Pycnometry Helium pycnometry has also been reported as a method...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... pycnometry. The degree of mixing homogeneity and rheology is measured in a capillary rheometer. Process considerations for injection molding are similar to metallic and ceramic systems, but with extra emphasis for flash control when producing metal-cutting inserts, and avoidance of air traps for any geometry...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006096
EISBN: 978-1-62708-175-7
... by helium pycnometry or some other technique) and the time needed to traverse the fixed distance between light beams, the particle size is calculated. Again, as with all techniques, an index of particle size is measured. Particles with aspect ratios greater than one may preferentially align in the gas...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006861
EISBN: 978-1-62708-392-8
... ) D 32 6 where p is the bed porosity (which can be calculated using helium gas pycnometry or microcomputed tomography before infiltration), and the volume and surface area of a finite amount of powder was used to calculate the Sauter mean diameter ( D 32 ) by using the formula in Eq 6...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
....) are determined by this method. Water penetration (boiling) and resulting weight gain can also be used to determine porosity. Ultrasonic attenuation can also furnish some information about porosity, particularly when scanning in frequency. Density is determined by either pycnometry or the Archimedes...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006019
EISBN: 978-1-62708-175-7
... of Metal Powders Using the Arnold Meter and Hall Flowmeter Funnel … B855 … Metal Powder Specific Surface Area by Physical Adsorption … B922 … Metal Powder Skeletal Density by Helium or Nitrogen Pycnometry … B923 … Flow Rate of Metal Powders Using the Carney Funnel … B964 … Metallic...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007021
EISBN: 978-1-62708-439-0
... Particle size distribution by sieve measurement or laser size diffraction Hall flow, Carney flow, or other flow measurement Apparent density Rheometry by stability index Angle of repose Tap density Pycnometry Cross-sectional imaging Optical light microscopy Particle color...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005514
EISBN: 978-1-62708-197-9
... techniques and dilatometry are the principal methods used. There is a wide variety of techniques for measuring the density of a molten alloy. Many are reviewed in Ref 6 and 64 and include classical techniques such as sessile drop, pendant drop, pycnometry, gamma ray attenuation, and capillary rise...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005727
EISBN: 978-1-62708-171-9
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006579
EISBN: 978-1-62708-290-7
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.9781627081719
EISBN: 978-1-62708-171-9