Electrode structure resistant to arc ablation and preparation method of structure
An electrode, layered structure technology, applied in the direction of 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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