Method and apparatus for the differential thermal analysis of a

Details Method and apparatus for the differential thermal analysis of a Method and apparatus for the differential thermal analysis of a

1977-12-22

1979-09-04

Goldstein, Herbert

Measuring and testing

Gas content of a liquid or a solid

By vibration

73 17R, G01N 2504

Patent

active

041663780

ABSTRACT:
The invention relates to a method for measuring the cooling curve of a test sample of metal or a metal alloy, in particular cast iron or cast steel, for the differential thermal analysis in which the difference of the cooling curve of the test sample of a fixedly given comparative curve which satisfies Newton's law of cooling (U=U.sub.0 .times.e.sup.-t/RC, the U.sub.0 parameter being the maximum value at the point in time t=0 and the RC parameter being the time constant) is formed, said comparative curve being brought to coincidence with a section of the cooling curve of the sample by adjusting its parameters so that the difference can then be formed between the adjusted comparative curve and the cooling curve.

REFERENCES:
patent: 3891834 (1975-06-01), Warsinski
patent: 4008604 (1977-02-01), Roach et al.
patent: 4044600 (1977-08-01), Claxton et al.
patent: 4046509 (1977-09-01), Backerud

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