2. Analytical resources

2.1 Dosage in liquid steel

In recent years, an analytical technique for the determination of hydrogen has been developed, involving the use of probes immersed in liquid steel (figure 2 ). The principle is based on the equilibrium that exists between the hydrogen present in the liquid metal and the gas bubbles (nitrogen) that are bubbled through it (figure 3 ).

$\underline{H} (dans l’acier liquide) £ 1/2 H_{2} (g) (dans la phase vapeur)$

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Analytical resources

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page Different states of existence of hydrogen in steels

Accurate dosing

References

(1) - FRIEDEL (J.) - Electronic structure of H in metals. Ber. - der Buns. Gesell. vol. 76, p. 828‐831 (1972).
(2) - FUWA (T.) - Hydrogen and nitrogen in liquid iron alloys. - Intern, conf. on the phys. chem. of iron and steel making, Versailles,...