thoriate การใช้

• Thoriated electrodes are suitable for use in DCEN welding of aluminum.
• These usually had directly heated thoriated filament cathodes that glowed like light bulbs.
• A thoriated tungsten electrode is commonly used, along with a pure argon shielding gas.
• All modern xenon short-arc lamps use a fused quartz envelope with thoriated tungsten electrodes.
• The thoriated-tungsten filament consists of two independent sections mounted on water-cooled supports.
• Another concern for the thoriated magnesium alloys is the low melting point and rapid oxidation of the metal.
• In those used in IMAX projectors, the electrode bodies are made from solid Invar and tipped with thoriated tungsten.
• These valves are bright emitter transmitting valves, and have thoriated tungsten filaments which glow like light bulbs when powered.
• It contains a directly heated thoriated-tungsten filament rated at 16.3 volts at approx . 625 amperes.
• In 1922 the company brought out valves using thoriated tungsten filaments, which needed less battery power to operate than former types.
• The most noted example of this is the ramjet components in the CIM-10 Bomarc missile and Lockheed D-21 drone, which implemented thoriated magnesium in their engine construction.
• Thorium is added to tungsten because it lowers the effective work function with the result that the thoriated tungsten filaments of vacuum tubes, e . g . magnetron found in microwave oven.
• Thoriated tungsten elements are found in the filaments of vacuum tubes, e . g . magnetron found in microwave oven . " as is, these two sentences don't belong together.
• When alternating current is used, pure tungsten electrodes or zirconiated tungsten electrodes are preferred over thoriated electrodes, as the latter are more likely to " spit " electrode particles across the welding arc into the weld.
• This is due to thoriated magnesium alloys being lightweight, having high strength, and creep resistance up to 350 癈 . But, these alloys are no longer used due to radiation concerns involving thorium's radioactivity.
• Similarly, the structure of the Equipment and Retro-Rocket Modules of the Gemini spacecraft ( the white-painted portions ) were made of thoriated magnesium for their strength-to-weight ratio and thermal properties.
• Although a number of IM-99 / CIM-10 Bomarcs have been placed on public display, because of concerns about the possible environmental hazards of the thoriated magnesium structure of the airframe several have been removed from public view.
• Thorium-containing alloys are not usually used, since a thorium content of more than 2 % requires that a component be handled as a radioactive material, although thoriated magnesium was used in military and aerospace applications in the 1950s.