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  2. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    International Annealed Copper Standard (IACS) pure =1.7×10 −8 Ω•m =58.82×10 6 Ω −1 •m −1. For main article, see: Copper in heat exchangers. The TPRC recommended values are for well annealed 99.999% pure copper with residual electrical resistivity of ρ 0 =0.000851 μΩ⋅cm. TPRC Data Series volume 1 page 81. [8]

  3. Glass-to-metal seal - Wikipedia

    en.wikipedia.org/wiki/Glass-to-metal_seal

    Uranium glass used as lead-in seals in a vacuum capacitor. Glass-to-metal seals are a type of mechanical seal which joins glass and metal surfaces. They are very important elements in the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass-encapsulated semiconductor diodes, reed switches, glass windows in metal cases, and metal or ceramic packages of ...

  4. RTV silicone - Wikipedia

    en.wikipedia.org/wiki/RTV_silicone

    Silicones also exhibit good chemical resistance and high-temperature resistance (205 °C, 400 °F and higher). For this reason, silicone molds are suitable for casting low-melt metals and alloys (e.g. zinc, tin, pewter, and Wood's metal). RTV silicone rubbers are, however, generally expensive – especially platinum-cure.

  5. Materials for use in vacuum - Wikipedia

    en.wikipedia.org/wiki/Materials_for_use_in_vacuum

    Austenitic stainless steels are the most common choice for high vacuum and ultra-high vacuum systems. Not all alloys are suitable; e.g. the free-machining 303 steel contains sulfur, which tends to outgas. Alloys with good weldability under argon arc welding are usually chosen. 304 stainless steel is a common choice of a stainless steel.

  6. Ultra-high temperature ceramic matrix composite - Wikipedia

    en.wikipedia.org/wiki/Ultra-high_temperature...

    On the other side bulk ceramics made of ultra-high temperature ceramics (e.g. ZrB 2, HfB 2, or their composites) are hard materials which show low erosion even above 2000 °C but are heavy and suffer of catastrophic fracture and low thermal shock resistance compared to CMCs. Failure is easily under mechanical or thermo-mechanical loads because ...

  7. Conformal coating - Wikipedia

    en.wikipedia.org/wiki/Conformal_coating

    For silicone resin, the coating thickness recommended by the IPC standards is 50–210 μm (0.0020–0.0083 in). There are several methods for measuring coating thickness, and they fall into two categories: wet film and dry film.

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