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PRECISION METHOD OF THERMAL ANALYSIS *
Author(s) -
Gruvbr R. M.
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.tb14245.x
Subject(s) - potentiometer , materials science , thermal conductivity , sample (material) , temperature control , voltage , composite material , analytical chemistry (journal) , mineralogy , thermodynamics , chemistry , electrical engineering , engineering , physics , chromatography
A bstract A continuously recording potentiometer, measuring accurately heat effects of from 0.1° to 500°C., is used to determine the differential temperature between a sample and a reference material. The temperature rise of sample and reference material is controlled to within 5° of a uniform rate (generally 400° per hour) by a continuous voltage adjustment‐type program controller. The sample holder differs from the usual holder described in the literature in that it has low heat capacity, high conductivity, and small mass. These properties necessitate a uniform temperature area in the furnace.