2007-03-18 05:09:03 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
it is mainly doing on aeroplanes to protect it from zang
2007-03-18 22:58:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Metal mirrors are coated with enhanced Aluminum, enhanced Gold and over-coated Silver for plastic, glass and metal optics. Dielectric mirror designs are also available for reflective's of 99.99% for applications from Ultraviolet to Infrared wavelengths
2007-03-18 06:05:48 · answer #2 · answered by Anonymous · 0⤊ 0⤋
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Powder coating of aluminium
Powder coating is a process in which electrostatically charged powder is sprayed onto electrically earthed parts using compressed air.
The powder is liquefied in the melting process. This produces a closed plastic film that is characterised by a high level of resistance against environmental influences and mechanical stress.
Pre-treatment of the aluminium profiles is the essential condition for a long-lasting, high-quality coating.
The preferred method for this is chromating according to DIN 50939.
This pre-treatment is required to attain perfect adhesion of the coating on the substrate (aluminium) and also helps protect against corrosion.
Electrostatic powder coating is an environmentally friendly method, as it marks on solvents with a high level of effectiveness.
Powder-coated surfaces, e.g.:
Shade according to RAL 9016
Polyester-based powder coating in the electrostatic powder coating process, applied with a coating thickness of at least 70 microns.
Pre-treatment according to DIN 50939.
Firing temperature: 180° to 220° C.
Gloss level at least 60%.
Powder coating:
Standard colour white, RAL 9016
2007-03-18 20:16:07 · answer #3 · answered by mallimalar_2000 7 · 0⤊ 0⤋
Metal mirrors are coated with enhanced Aluminum, enhanced Gold and over-coated Silver for plastic, glass and metal optics. Dielectric mirror designs are also available for reflective's of 99.99% for applications from Ultraviolet to Infrared wavelengths
2007-03-18 07:41:32 · answer #4 · answered by unknown 4 · 0⤊ 1⤋
wall coatings
2015-06-14 21:02:27 · answer #5 · answered by Cbe 1 · 0⤊ 0⤋