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FACTORS AFFECTING REPRODUCIBILITY OF FLOW‐BUTTON TEST *
Author(s) -
Plankbnhorn W. J.
Publication year - 1948
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1948.tb14249.x
Subject(s) - pellets , fineness , materials science , enamel paint , reproducibility , composite material , pellet , coating , fusion , flow (mathematics) , metallurgy , mineralogy , chemistry , mathematics , chromatography , geometry , linguistics , philosophy
A bstract Pellets formed from dry‐milled ground‐coat frits of the conventional cobalt type were used to study the factors influencing the flow characteristics of enamel fusion buttons at temperatures above their softening points. To insure reproducible results it was necessary to control accurately (1) the materials being tested, (2) the temperature, (3) the time, and (4) the weight of the sample. Reasonable variations in the gauge of the metal holding plate and the coating applied to protect the plate did not greatly affect the dimensions of the fired buttons. Little difference in the flow of ground‐coat fusion buttons was noted for variations in either particle size, fineness distribution, forming pressures, or height of the pellets.