Electrochemical hydrogen diffusion sample surface nickel plating device and process

Abstract

The application discloses a kind of electrochemical hydrogen diffusion sample surface nickel plating device and process, including sample clamp component one, sample clamp component two, a pair of screw rod, a group of nut, copper sheet, sealing ring one, sealing ring two and piezoelectric vibrator, the center of sample clamp component one and sample clamp component two is respectively provided with through hole one and through hole two, the end surface of sample clamp component one is equipped with sealing ring one, the end surface of sample clamp component two is equipped with sealing ring two towards sample clamp component one, two nickel-plated samples are set between sealing ring one and sealing ring two, copper sheet is set between two nickel-plated samples, the two ends of one screw rod respectively pass through the upper portion of sample clamp component one and the upper portion of sample clamp component two, the two ends of another screw rod respectively pass through the lower portion of sample clamp component one and the lower portion of sample clamp component two, and cooperate nut and are fixed, piezoelectric vibrator is sleeved on the screw rod of two sample clamp component lower portions, the application simple structure, easy operation, greatly improve the nickel plating efficiency of sample surface.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nickel plating on the surface of an electrochemical hydrogen diffusion test sample, and particularly relates to a device and process for nickel plating on the surface of an electrochemical hydrogen diffusion test sample. BACKGROUND

[0002] Electrochemical hydrogen diffusion experiments are very important and are widely used in material hydrogen damage assessment and testing of various hydrogen embrittlement key indicators. However, a key step in the processing of electrochemical hydrogen diffusion test samples is the nickel plating of the anode surface of the test sample, and the quality of the nickel plating directly affects the detection of anode voltage and current and the subsequent calculation of the hydrogen diffusion coefficient. At present, laboratory nickel plating of electrochemical hydrogen diffusion test samples is not very convenient, and the nickel plating efficiency is not high. Reliable test sample surface nickel plating devices and processes often have some problems, such as poor device adaptability, time-consuming process flow, and inconvenient recycling of one-time use of nickel plating solution. SUMMARY

[0003] In view of the problems in the prior art, the purpose of the present application is to provide a device and process for nickel plating on the surface of an electrochemical hydrogen diffusion test sample, which can meet the high quality and high efficiency of hydrogen diffusion nickel plating, saving experimental costs and operator effort.

[0004] The technical scheme of the present application is as follows:

[0005] The present application provides a device for nickel plating on the surface of an electrochemical hydrogen diffusion test sample, which comprises a test sample clamping assembly one, a test sample clamping assembly two, a pair of screws, a set of nuts, a copper sheet, a sealing ring one, a sealing ring two and a piezoelectric vibrator. A through hole one is formed in the center of the test sample clamping assembly one, and a through hole two is formed in the center of the test sample clamping assembly two. The test sample clamping assembly one is provided with a sealing ring one on the end surface, and the test sample clamping assembly two is provided with a sealing ring two on the end surface facing the test sample clamping assembly one. Two test samples to be plated with nickel are arranged between the sealing ring one and the sealing ring two, and the copper sheet is arranged between the two test samples to be plated with nickel. The two ends of one screw pass through the upper part of the test sample clamping assembly one and the upper part of the test sample clamping assembly two, respectively, and are fixed with nuts. The two ends of the other screw pass through the lower part of the test sample clamping assembly one and the lower part of the test sample clamping assembly two, respectively, and are fixed with nuts. A piezoelectric vibrator for reducing bubbles on the nickel plating surface is sleeved on the screws below the test sample clamping assembly one and the test sample clamping assembly two, and is located between the two test sample clamping assemblies. The piezoelectric vibrator can slide on the screws and is fixedly connected after the position is determined.

[0006] Further, the test sample clamping assembly one and the test sample clamping assembly two are both cylindrical structures with a central opening having a wall thickness, and the shapes of the through hole one and the through hole two are trumpet-shaped.

[0007] Further, the through hole one and the through hole two are gradually expanded from the end close to the sample to the end far from the sample.

[0008] Further, a sealing ring one installation groove is arranged on the surface of the sample holder assembly one close to the through hole one, and the sealing ring one is installed in the sealing ring one installation groove; a sealing ring two installation groove is arranged on the surface of the sample holder assembly two close to the through hole two, and the sealing ring two is installed in the sealing ring two installation groove.

[0009] Further, a thread hole one matched with the external thread of the screw is arranged at the matching position of the sample holder assembly one and the screw, and a thread hole two matched with the external thread of the screw is arranged at the matching position of the sample holder assembly two and the screw, and the screw is threadedly connected with the sample holder assembly one and the sample holder assembly two respectively.

[0010] Further, the thickness of the copper sheet close to the screw is greater than the thickness of the edge part held by the two sample holders.

[0011] Further, the screw, the nut, the shell of the piezoelectric vibrator, the through hole one and the through hole two are made of insulating materials, and the insulating materials are hard rubber or resin.

[0012] The application further provides an electrolytic chemical hydrogen diffusion sample surface nickel plating process using the device, which comprises the following steps:

[0013] First, install the two sealing rings in the sealing ring one installation groove and the sealing ring two installation groove respectively, and then place two flat samples together, with the side to be plated with nickel exposed outside, and then place the two samples between the sealing ring one and the sealing ring two, and then install the screw and the nut and adjust the tightness, and then place the copper sheet between the two samples to be plated with nickel, and then tighten the nuts at the two ends of the screw to tightly combine the device, and then completely immerse the through hole part of the assembled device in standard Watt plating solution, and then use the cathode electrolysis clamp of the electrochemical workstation to hold the upper part of the copper sheet, and use the anode clamp to hold the metal mesh wound with pure nickel wire, and then connect the electrodes, and then start the electrochemical workstation and the piezoelectric vibrator, and then set the current parameters to perform cathode nickel plating on the samples, and then disassemble the two samples to obtain two single-sided nickel plated samples.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] 1) The device of the present application is small and portable, which can be well applied in the process of electrochemical hydrogen diffusion sample surface single-sided nickel plating. Two sealing rings are respectively installed in the sealing ring one installation groove and the sealing ring two installation groove, then two flat samples are overlapped together, the side of the two samples needing to be plated with nickel is exposed, then the two samples are placed between the sealing ring one and the sealing ring two, then the screw rod and the nut are installed, and a proper tightness is adjusted, then the copper sheet is placed between the two samples to be plated with nickel, then the nuts at both ends of the screw rod are tightened to tightly combine the whole device, so that the two sealing rings are tightly combined with the corresponding sample clamping assembly, and the sealing property and the good conductivity of the whole device are guaranteed;

[0016] 2) The piezoelectric vibrator in the present application reduces the bubbles on the nickel plating surface, improves the surface nickel plating quality and the high efficiency of nickel plating;

[0017] 3) After the nickel plating is completed, the two samples are separated to obtain two single-sided nickel plated samples, which saves the subsequent sample surface treatment after single overall nickel plating, and more importantly, avoids the introduction of additional hydrogen in the cathode side electroplating process of the hydrogen diffusion experiment, so that the design process of the sample nickel plating further improves the accuracy of the subsequent hydrogen diffusion experiment;

[0018] 4) The device of the present application can meet the high quality and high efficiency of hydrogen diffusion nickel plating, and saves the manpower and material resources for the post-processing of the samples after nickel plating. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a front view of the device of the present application;

[0020] Fig. 2 It is a side view of the device of the present application.

[0021] In the figure: 1, sample clamping assembly one; 101, through hole one; 2, sample clamping assembly two; 201, through hole two; 3, screw rod; 4, nut; 5, copper sheet; 6, sealing ring one; 7, sealing ring two; 8, piezoelectric vibrator. DETAILED DESCRIPTION

[0022] The present application will be further described below in conjunction with the drawings, but the scope of protection of the present application is not limited to the scope described.

[0023] As Figs. 1-2As shown, an electrochemical hydrogen diffusion sample surface nickel plating device comprises a sample clamp assembly one 1, a sample clamp assembly two 2, a pair of screw rods 3, a set of nuts 4, a copper sheet 5, a sealing ring one 6, a sealing ring two 7 and a piezoelectric vibrator 8, the sample clamp assembly one 1 and the sample clamp assembly two 2 are both cylindrical structures with a center opening with a wall thickness, a through hole one 101 and a through hole two 201 are respectively arranged at the center of the sample clamp assembly one 1 and the center of the sample clamp assembly two 2, the shape of the through hole one 101 and the through hole two 201 is a horn-shaped or circular through hole, which is a horn-shaped through hole in the embodiment, the two horn-shaped through holes are gradually enlarged from the end close to the sample to be plated to the end far from the sample to be plated, which is a strictly expanding pipe opening, which is beneficial to the bubbles on the surface of the nickel-plated sample to be smoothly escaped from the horn-shaped opening after being vibrated and separated from the sample, thereby further ensuring the uniformity of the surface nickel plating.

[0024] The sample clamp assembly one 1 close to the through hole one 101 is provided with a sealing ring one mounting groove on the end surface, the sample clamp assembly two 2 close to the through hole two 201 is provided with a sealing ring two mounting groove on the end surface close to the sample to be tested, the sealing ring one 6 is mounted in the sealing ring one mounting groove, and the sealing ring two 7 is mounted in the sealing ring two mounting groove, so that the air tightness of the whole device is better, and the standard Watt plating solution is prevented from leaking and the copper sheet and the non-target nickel-plated area of the sample are prevented from being contacted.

[0025] The two nickel-plated samples are arranged between the sealing ring one 6 and the sealing ring two 7, and the copper sheet 5 is arranged between the two nickel-plated samples, wherein the thickness of the copper sheet 5 close to the screw rod 3 is greater than the edge part clamped by the two samples, so as to ensure that the upper part of the copper sheet has good durability after the device is used for many times, and the position clamped by the sample should be thin to ensure the good sealing and close contact of the two samples, one end of the screw rod 3 penetrates through the upper part of the sample clamp assembly one 1 and the upper part of the sample clamp assembly two 2, and is fixed by cooperating with the nut 4, the other end of the screw rod 3 penetrates through the lower part of the sample clamp assembly one 1 and the lower part of the sample clamp assembly two 2, and is fixed by cooperating with the nut 4, further, a matching thread hole one matched with the outer thread of the screw rod 3 is arranged at the matching position of the sample clamp assembly one 1 and the screw rod 3, and a thread hole two matched with the outer thread of the screw rod 3 is arranged at the matching position of the sample clamp assembly two 2 and the screw rod 3, the screw rod 3 is threadedly connected with the sample clamp assembly one 1 and the sample clamp assembly two 2, so as to facilitate installation and disassembly.

[0026] The electrochemical hydrogen diffusion sample surface nickel plating device of the present application, the piezoelectric vibrator 8 for reducing the bubbles of the nickel plating surface is sleeved on the screw rod 3 at the lower part of the sample clamp assembly one 1 and the sample clamp assembly two 2, and is located between the two sample clamp assemblies. Different fixing positions can change the gravity center of the device to make the nickel plating surface have a slight inclination in the nickel plating solution, and the generation of vibration ensures that the bubbles of the nickel plating surface quickly escape, and the position is fixedly connected after being determined.

[0027] The screw rod 3, the nut 4, the shell of the piezoelectric vibrator 8, the through hole one 101 and the through hole two 201 in the embodiment are made of insulating materials, wherein the insulating materials are hard rubber or resin.

[0028] The present application also provides a process for electrochemically plating nickel on the surface of a hydrogen diffusion sample by using the device of the present application, which specifically comprises the following steps:

[0029] First, install the two sealing rings in the sealing ring one mounting groove and the sealing ring two mounting groove respectively, overlap the two flat samples together, and expose the side of the two samples that needs to be plated with nickel, then place the two samples between the sealing ring one 6 and the sealing ring two 7, then install the screw rod 3 and the nut 4 and adjust the appropriate tightness, then place the copper sheet 5 between the two samples to be plated with nickel, then tighten the nuts 4 at both ends of the screw rod 3 to tightly combine the entire device, then completely immerse the through hole part of the assembled device in the standard Watt plating solution, hold the upper part of the copper sheet 5 with the cathode electrolysis clamp of the electrochemical workstation, and the object held by the anode clamp is a metal mesh wound with pure nickel wire. After the electrode connection is completed, turn on the electrochemical workstation and the piezoelectric vibrator 8, set the current parameters to perform the cathode nickel plating of the sample, and after the nickel plating is completed, disassemble the two samples and separate them to obtain two single-sided nickel-plated samples. The subsequent sample surface treatment after single overall nickel plating is saved, and more importantly, the additional hydrogen introduction during the cathode plating process in the hydrogen diffusion experiment is avoided. The sample nickel plating design process further improves the accuracy of the subsequent hydrogen diffusion experiment.

[0030] The device of the present application is simple and small, has high nickel plating efficiency, can to some extent correct the circulation of the nickel plating solution, and saves manpower and material resources for the post-treatment of the samples after nickel plating.

Claims

1. A device for electrochemical hydrogen diffusion sample surface nickel plating, characterized in that... The utility model provides a kind of nickel plating device for two samples, including sample holder assembly one (1), sample holder assembly two (2), a pair of screw rods (3), a group of nuts (4), copper sheet (5), sealing ring one (6), sealing ring two (7) and piezoelectric vibrator (8), the center of the sample holder assembly one (1) is equipped with through hole one (101), the center of the sample holder assembly two (2) is equipped with through hole two (201), the surface of the sample holder assembly one (1) end is equipped with sealing ring one (6), the surface of the sample holder assembly two (2) towards the sample holder assembly one (1) end is equipped with sealing ring two (7), two samples to be plated nickel are arranged between sealing ring one (6) and sealing ring two (7), the copper sheet (5) is arranged between two samples to be plated nickel, the two ends of a screw rod (3) respectively pass through the upper portion of the sample holder assembly one (1) and the upper portion of the sample holder assembly two (2), and are fixed with nut (4), the two ends of another screw rod (3) respectively pass through the lower portion of the sample holder assembly one (1) and the lower portion of the sample holder assembly two (2), and are fixed with nut (4), the screw rod (3) of the lower portion of the sample holder assembly one (1) and the sample holder assembly two (2) is equipped with piezoelectric vibrator (8) for reducing the bubble of nickel plating surface, and is located between two sample holder assemblies, the piezoelectric vibrator (8) can slide on the screw rod (3), and is fixedly connected after position determination. The sample holder assembly one (1) and the sample holder assembly two (2) are both cylindrical structures with wall thickness and central aperture, and the through hole one (101) and the through hole two (201) are in the shape of a horn.

2. The apparatus for electrochemically depositing nickel on the surface of a hydrogen diffusion sample according to claim 1, wherein The through hole one (101) and the through hole two (201) gradually increase from the end close to the sample to be plated nickel to the end far from the sample to be plated.

3. The apparatus for electrochemically depositing nickel on the surface of a hydrogen diffusion sample according to claim 2, wherein The surface of the sample holder assembly one (1) close to the through hole one (101) is provided with a sealing ring one mounting groove, and the sealing ring one (6) is mounted in the sealing ring one mounting groove.

4. The apparatus for electrochemically depositing nickel on the surface of a hydrogen diffusion sample according to claim 3, wherein The surface of the sample holder assembly two (2) close to the through hole two (201) is provided with a sealing ring two mounting groove, and the sealing ring two (7) is mounted in the sealing ring two mounting groove.

5. The apparatus for electrochemically depositing nickel on the surface of a hydrogen diffusion sample according to claim 4, wherein The cooperation part of the sample holder assembly one (1) and the screw rod (3) is provided with a thread hole one matched with the external thread of the screw rod (3), and the cooperation part of the sample holder assembly two (2) and the screw rod (3) is provided with a thread hole two matched with the external thread of the screw rod (3), and the screw rod (3) is threadedly connected with the sample holder assembly one (1) and the sample holder assembly two (2) respectively.

6. The apparatus for electrochemically depositing nickel on the surface of a hydrogen diffusion sample according to claim 5, wherein The thickness of the copper sheet (5) close to the screw rod (3) is greater than the thickness of the edge part clamped by two samples.

7. A nickel plating process for an electrolytically hydrogen-diffused sample surface using the apparatus as described in claim 1, characterized in that... The screw rod (3), the nut (4), the shell of the piezoelectric vibrator (8), the through hole one (101) and the through hole two (201) are made of insulating material, and the insulating material is hard rubber or resin. The utility model provides a kind of nickel plating device for two samples, including the following specific steps: First, two sealing rings are installed in the sealing ring one installation groove and the sealing ring two installation groove respectively, two flat samples are overlapped together, the side of the two samples which needs to be plated with nickel is exposed, then the two samples are placed between the sealing ring one (6) and the sealing ring two (7), then the screw rod (3) and the nut (4) are installed, and a suitable tightness is adjusted, then the copper sheet (5) is placed between the two samples to be plated with nickel, then the nuts (4) at both ends of the screw rod (3) are tightened to tightly combine the whole device, then the through hole part of the assembled device is completely immersed in the standard Watt plating solution, the upper part of the copper sheet (5) is clamped by the cathode electrolysis clamp of the electrochemical workstation, and the object clamped by the anode clamp is a metal mesh wound with pure nickel wire, after the electrode connection is completed, the electrochemical workstation and the piezoelectric vibrator (8) are started, the current parameters are set, the cathode nickel plating of the sample is carried out, after the nickel plating is completed, the two samples are disassembled and separated, and two single-sided nickel-plated samples can be obtained.

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