Arc ablation-resistant tungsten alloy switch contact and preparation method thereof

An arc-ablation resistant tungsten alloy switch contact, wherein the switch contact is a layered complex having a three-layer structure, comprising:

• a first layer, which is a hydrophobic rubber layer composed of a vulcanized hydrophobic rubber material, and having a thickness of 0.1-10 mm;
• a second layer, which is a sheet metal layer having a thickness of 0.01-1.0 mm and containing magnesium, aluminum, titanium, chromium, manganese, ferrum, cobalt, nickel, copper, zinc, niobium, molybdenum, silver, tin or aurum, wherein the hydrophobic rubber layer is adhered with self-adhesiveness directly to the sheet metal layer by heat vulcanization adhesion or by heat vulcanization shaping of the hydrophobic rubber material;
• and
• a third layer, which is a tungsten alloy plated layer having a thickness of 2*10−5-0.02 mm, wherein the tungsten alloy plated layer of the third layer is deposited on a surface of the second layer, and the tungsten alloy plated layer in the third layer contains no less than 30 weight % tungsten.