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In the automotive industry, injection-molded polycarbonate can produce very smooth surfaces that make it well-suited for sputter deposition or evaporation deposition of aluminium without the need for a base-coat. Decorative bezels and optical reflectors are commonly made of polycarbonate.
In 2014 researchers used a 3d laser printer to produce a polymer matrix. When coated with a 50–100 nanometer layer of aluminum oxide , the material was able to withstand loads of as much as 280 megapascals , stronger than any other known material whose density was less than 1,000 kilograms per cubic metre (1,700 lb/cu yd), that of water.
The superforming process varies mostly in the way that the metal is introduced to the form; the main 4 variations are: Cavity forming The metal in its plastic state is introduced to a negative form by gas pressure. It is good for large and complex parts such as automotive body panels and is excellent for shaping 5083 aluminium alloy.
[citation needed] Additionally, thermoplastic composite materials can be formulated with specific metal powders resulting in materials with a density range from 2 g/cm 3 to 11 g/cm 3 (same density as lead). The most common name for this type of material is "high gravity compound" (HGC), although "lead replacement" is also used.
In materials science, a metal matrix composite (MMC) is a composite material with fibers or particles dispersed in a metallic matrix, such as copper, aluminum, or steel. The secondary phase is typically a ceramic (such as alumina or silicon carbide ) or another metal (such as steel [ 1 ] ).
A study from 2024 found that compared to glass and aluminum, plastic may actually have less of a negative effect on the environment and therefore might be the best option for must food packaging and other common uses. [126] The study found that, "replacing plastics with alternatives is worse for greenhouse gas emissions in most cases."
Aluminum is generally more recyclable, and less expensive than plastic. Coke has come under fire for its single-use plastic production, and late last year cut its sustainability goals. The ...
Aluminium is the most common metal used for deposition, but other metals such as nickel and chromium are also used. The metal is heated and evaporated under vacuum. This condenses on the cold polymer film, which is unwound near the metal vapour source. This coating is much thinner than a metal foil could be made, in the range of 0.5 micrometres ...
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