所标尺寸为处理前的
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9 D( k& f5 x: B$ o2 V- q6 T美国MIL-C-5541标准 (Chemical conversion coating on Aluminium and their alloy)。" x% O( |2 ^7 g) e3 h# }# D3 h
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MIL-C-81706标准(Chemical conversion material for coating Aluminium & Aluminium alloy) etc. Chem-film (Alodine.)7 i) w) t1 W" I0 v; z; C' [
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ASTM B-449 也有部份関係。
4 Q; b$ c: q6 P) U1 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。, G0 ~- K6 d( V
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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.4 j" C) b$ i! ~2 z; F$ a( W) v
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MIL-C-5541E No dimensional change 。Normally yellow. Specify CLEAR if needed.
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Class 1 A
. K. n- Z9 E: m; }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.2 `6 ^$ G1 u3 e/ `
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Class 3 8 v& i% H/ a g2 |& J4 F0 G
Class 3 is used as a corrosion preventive film for electrical and electronic applications, where low resistance contacts are required.(MAX CONDUCTIVITY)。 |