2014年7月6日星期日

molybdenum bar Other applications include

Used as an electrode . Tungsten can be pulled into a very fine wire, but very high melting point . Other applications include : Due to a very high melting point of tungsten , commonly used in aerospace and high-temperature applications, molybdenum plate such as electronics, heating , welding, such as gas tungsten arc welding . Tungsten is very hard, very close , so ideal for making heavy metal alloys , such as alloy is used in armor , heat sinks and high density applications such as weights , balance weights , boats and aircraft weights and so on. Because tungsten is very tight , darts often containing 80-97% tungsten . Tungsten high-speed steel , sometimes containing 18 % tungsten . Sheet of turbines , durable protective layer portion and the tungsten-containing high-temperature alloy ( Hastelloy alloy , stellite , etc. ) . tungsten carbide inserts Using tungsten bullets instead of lead . Tungsten tungsten carbide plate as catalyst, inorganic colors. Tungsten disulfide is a high temperature lubricant , which remained stable at 500 ° C . Since the thermal expansion of tungsten and similar borosilicate glass , which is used to make glass / metal seal tungsten and nickel, iron and cobalt alloys are used to make heavy alloy , this alloy is used in kinetic energy of the bullet weight to replace depleted uranium . Tungsten in an integrated circuit is a connection between the road thing . Erosion of the insulator in the contact holes of silica , into tungsten, polished to connect the transistor. Typical contact holes as small as 65 nm. molybdenum bar Tungsten is one of the hardest material , is used in machine tools and abrasives .

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