所标尺寸为处理前的( X/ o* k3 a" d8 V9 P! {
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美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。+ Y3 j- F8 ~& ~. U, S. r
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% M8 h5 j8 y; S9 UMIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)) k) z1 x2 ?- k& w: w) R2 r/ f' S
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ASTM B-449 也有部份関係。
* l8 u: u9 ^% Q9 v/ F) [ g+ a1)化学导电氧化与alodyne是相同的处理办法。alodyne也有其导电性能。
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Chemical Films(化成皮膜)
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Coatings for aluminum. Color can vary from colorless to golden - iridescent - brown. Materials should conform to Mil - C - 81706. Coatings shall be continuous free from powdery areas, breaks, scratches, etc.2 [! P3 Z) L. f; @1 U
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MIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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! M1 n( ^ ]0 s2 U4 G# G; h k, OClass 1 A 5 d. q: a6 [ K
Class 1A is used as a corrosion preventative film (unpainted) or to improve adhesion of paint finish systems.For maximum protection against corrosion for surfaces to be painted or left unpainted.
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Class 3 * ]6 D: v' h b, n+ t" a
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |