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LANZHOU, Feb. 27 (Xinhua) -- Researchers have developed a new type of ceramic aerogel which can be used in thermal insulation.The new ceramic aerogel, developed by Chinese and American researchers, has strong mechanical and thermal stability, as well as excellent performance in transformation and toughness.Aerogels, made of ceramics, carbon, or metal oxide, have a robust structure, said Zhang Qiangqiang, a professor at Lanzhou University in northwest China's Gansu Province.Previous ceramic aerogels were plagued by poor mechanical stability and degradation under thermal shock. The new material is considered an ideal thermal insulation material due to its low density, low thermal conductivity, and fire resistance.The new aerogel maintained great mechanical stability throughout hundreds of se...
发布时间: 2019 - 02 - 28
发布时间: 2018 - 01 - 05
发布时间: 2018 - 01 - 05
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
发布时间: 2018 - 02 - 27
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