Methods of manufacturing crucible for flameless atomic absorptio

Details Methods of manufacturing crucible for flameless atomic absorptio Methods of manufacturing crucible for flameless atomic absorptio

1981-02-02

1983-01-04

Smith, John D.

Coating processes

Heat decomposition of applied coating or base material

Coating decomposed to form carbide or coating carbonized

427230, 427237, 427249, 427292, 427309, 427402, G01N 2116

Patent

active

043672469

ABSTRACT:
A preform made of carbon, and especially electrical graphite (electro-graphite), is given a protective coating of pyrolytic graphite which, in turn, is activated by further coating with a carbon with a very low degree of orientation (soot) or by roughening. The process of activation reduces the effect of the sample to be analysed, while the protective effect of the pyrolytic graphite coating is preserved.

REFERENCES:
patent: 3819279 (1974-06-01), Braun et al.
patent: 3854979 (1974-12-01), Rossi
patent: 3936535 (1976-02-01), Boder
patent: 4082460 (1978-04-01), Braun et al.
patent: 4204769 (1980-05-01), Lersmacher et al.
patent: 4293512 (1981-10-01), Luhleich et al.

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