Determination of the hydrogen fugacity during cathodic hydrogen charging of X65 D pipeline steel
Source abstract
Abstract
Hydrogen embrittlement testing using cathodic hydrogen charging is directly relatable to structures containing gaseous hydrogen if the hydrogen fugacity is known. The hydrogen fugacity, f Hc , was evaluated by comparing the hydrogen concentration after cathodic charging with the hydrogen concentration in equilibrium with hydrogen gas: f Hc 0.5 = 6.11 i 0.5 + 10.9 for cathodic hydrogen charging X65 D in 0.10 M NaOH at a current density of i . The hydrogen concentration in equilibrium with gaseous hydrogen in X65 D, C Hg , was evaluated from literature values and hydrogen gas-phase permeation results: C Hg = 0.0062 f Hg 0.5 + 0.0355, where f Hg is the hydrogen gas fugacity. • Hydrogen embrittlement testing using cathodic charging can be related to structures containing gaseous hydrogen. • The hydrogen concentration in equilibrium with gaseous hydrogen, C Hg , was evaluated. • C Hg = 0.0062 f Hg 0.5 + 0.0355, where f Hg is the hydrogen gas fugacity. • The hydrogen fugacity was f Hc 0.5 = 6.11 i 0.5 + 10.9 for cathodic charging at a current density of i . • f Hc was evaluated by comparing the hydrogen concentration after cathodic charging with C Hg .
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Material Properties and Failure Mechanisms · Engineering Diagnostics and Reliability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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