An electrode structure resistant to arc ablation and its preparation method
A technology for generating electrodes and arcs, applied to electrical components, plasma, etc., can solve problems such as hindering characteristics
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Embodiment 1
[0040] In this example, an electrode with a layered structure is prepared, in which the metal hafnium is the base layer, the metal hafnium and the hafnium oxide are the dual-phase layer, and the hafnium oxide is the surface layer. The stable arc current in the actual arc of the electrode is 50 A; according to the application environment of the electrode, the bearing arc root area is a circular area with a diameter of 5 mm.
[0041] The preparation process of this electrode is as follows:
[0042] 1. The surface of pure metal block hafnium is milled flat, soaked in acetone to remove oil stains, and then clamped to the arc generating device as a cathode;
[0043] 2. Start the active gas source outside the arc generating device to make the arc space full of active oxidizing atmosphere;
[0044] 3. According to the actual arc steady current of the electrode is 50 A, set the gradient current increasing program (such as figure 2 ); input the upper current limit of 50 A in the arc...
Embodiment 2
[0071] In this embodiment, metal zirconium is used as a matrix, zirconium and zirconium oxide are used as a dual-phase layer, and zirconium oxide is used as a surface layer to form an electrode with a layered structure. The stable arc current of the electrode is 30 A; according to the application environment of the electrode, the bearing arc root area is a circular area with a diameter of 3 mm.
[0072] The preparation process of this electrode is as follows:
[0073] 1. The surface of the pure metal block zirconium is milled flat and soaked in acetone to remove oil stains, and then clamped to the arc generating device as a cathode;
[0074] 2. Start the active gas source outside the arc generating device to make the arc space full of active oxidizing atmosphere;
[0075] 3. According to the application environment of the prepared electrode, the bearing arc root area is a circular area with a diameter of 3 mm. Therefore, the preparation range of the electrode is set as a cir...
Embodiment 3
[0080] The layered electrode of this embodiment includes a surface layer of yttrium oxide, a dual-phase layer of yttrium oxide and yttrium, and a metal yttrium matrix. The stable arc current of the electrode in service environment is 75 A, and the diameter of the bearing arc root is about 6 mm.
[0081] The preparation process of this electrode is as follows:
[0082] 1. Mill the surface of the pure metal block yttrium, remove the oil stain, and clamp it in the sample holder as the cathode;
[0083] 2. Start the active gas source of the arc generating device to make the arc space full of active oxidizing atmosphere;
[0084] 3. According to the electrode application environment, the preparation range is set as a circular area with a diameter of 6.5 mm, and the arc root is planned to move around the center to form a circular area with a diameter of 6.5 mm. The schematic diagram of the trajectory is similar to that of Example 1 ( figure 1 ).
[0085] According to the stable a...
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Abstract
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