所标尺寸为处理前的+ W# L# e/ K g+ s( A) j
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美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。
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8 G/ m* f% H0 W% U8 d1 gMIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.) T$ Y; j2 j6 [9 z/ ?
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ASTM B-449 也有部份関係。
# O3 M( C" i/ d% ?/ r8 S1)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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/ @/ Q) x- h7 q ^- a$ j7 ?Chemical Films(化成皮膜)' K5 S0 D( R* o I3 e$ Y
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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.
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MIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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4 E! J( e/ I7 M& FClass 1 A
. W: [9 b4 a3 nClass 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. n+ [8 B$ f$ }: A- d0 p
; X$ R4 z. T, @; W5 ~0 _2 CClass 3 3 |2 R; ^+ |& V+ ]- E
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |