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Engineers at the University of California, San Diego have developed a process for welding ceramics that could have wide-ranging implications for the hardiness and construction of electronics.According to a paper published in Science on August 23rd,, UC-San Diego researchers have used a sub-50-watt, rapidly-pulsing laser to melt and fuse ceramics, upending traditional ceramics welding methods by dramatically lowering the temperature at which the material binds.Traditionally, ceramics have been difficult to weld because they require immense amounts of heat to make them malleable enough to fuse. While heating ceramics to these temperatures isn’t difficult, cooling them uniformly has been challenging—if a ceramic material cools in uneven conditions, it’s susceptible to cracking, spli...
发布时间: 2019 - 09 - 11
浏览次数:245
Cobalt-based alloys have been used in demanding applications for as long as investment casting has been available as an industrial process. Arcam’s Electron Beam Melting technology competes directly with investment casting and is a viable choice for manufacturing complex parts in cobalt-based alloys. The majority of investment castings made from the cobalt super alloys are cast in an open atmosphere. With Arcam’s Electron Beam Melting process the vacuum atmosphere provides a controlled environment and enables superior material properties in the manufactured parts. CoCrMo alloys are widely used for medical prosthetic implant devices. The alloys are especially used where high stiffness or a highly polished and extremely wear-resistant material is required. CoCrMo alloys are the materials of choice for applications such as knee implants, metal-to-metal hip joints and dental prosthetics.
发布时间: 2018 - 02 - 27
浏览次数:1130
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