| 摘要 |
A method and a device (30) for measuring a content of hydrogen absorbed by a metal workpiece (86) by permeation in the form of hydrogen atoms, in particular in order to characterize an interaction between said workpiece and said hydrogen absorbed that can weaken or cause an embrittlement of said workpiece, wherein the device comprises a probe (38) with a mixing chamber (38') accessible to an amount of hydrogen emanating (13) from the workpiece, and communicating with an inlet port (27) of a measurement gas (26); a solid- state hydrogen concentration sensor (15) pneumatically connected with the mixing chamber (38'); a gas transfer means (14) for forming a flow (W) of a measurement gas (26) from the inlet port (27) to the sensor (15); a processor means (16) for processing a concentration signal (19) of the sensor and for producing a parameter (17) related to the interaction between the metal workpiece (86) and the absorbed hydrogen. In an exemplary embodiment, the probe is configured for receiving such a treatment as a galvanic deposition treatment, a pickling treatment and the like in a bath, in order to measure the hydrogen absorption and/or the treatment efficiency. In another exemplary embodiment, a means is provided for arranging the probe (38) with an access opening (27) facing the metal workpiece (86), in particular in contact therewith, in particular the sensor (15) is a built-in sensor arranged in the mixing chamber (38), for direct permeation measurements in a container of a hydrogen-comprising gas or of a corrosive fluid, in order to monitor the hydrogen embrittlement and/or the corrosion due to the fluid, In an apparatus for measuring the diffusivity, the device (30) is associated with a generation cell (31 ) of hydrogen (13) to be arranged on a face (89) of the workpiece (86) opposite to the face (88) exposed to the probe (38). In another exemplary embodiment, the probe comprises a container configured to contain the metal workpiece, in order to measure the hydrogen absorbed in the workpiece. |
