Industrial integrator

• Book ID: 103080196
• Publisher: Elsevier Science
• Year: 1949
• Tongue: English
• Weight: 73 KB
• Volume: 247
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(49)90645-6

✦ Synopsis

metal of unique properties, now is being produced and sold by Aluminum Co. of America. Metal is liquid at 86 F. but will not boil until heated to around 3700 F. lts density (5.9) is about that of aluminum, but only half that of metallic mercury, which is liquid at room temperature. Gallium shows a strong tendency to undercool, and the liquid metal may be held for some time at temperatures ahnost as low as the freezing point of water without solidification taking place. Like water, but unlike most elements, the density of gallium is greater as a liquid than as a solid; gallium actually expands on solidifying. Gallium wets glass and porcelain, and when heated as high as 1000 F. a globule of the metal will remain bright and shiny due to a protective natural oxied film which forms on the surface.