Surface Treatment Specs: dissimilar_metal_protection_titanium
Electroplating and surface treatment specifications covering thickness ranges, hardness, corrosion resistance (salt spray hours), wear resistance, operating temperature limits, substrate compatibility, applicable standards, and finish appearance. Processes include zinc plating (clear/yellow/black chromate), zinc-nickel, bright electrolytic nickel, electroless nickel (mid/high phosphorus), hard chrome (hexavalent and trivalent), decorative chrome, tin, silver, gold, cadmium, anodizing (Type I/II/III per MIL-A-8625), zinc/manganese phosphate, black oxide, stainless steel passivation, and electropolishing.
| treatment category | treatment variant | dissimilar coupling context | notes | process type | standard | substrate compatibility |
|---|---|---|---|---|---|---|
| dissimilar_metal_protection_titanium | rank1_anodize | true | Rank 1 (most protective): Anodize for anti-galling and wear resistance; Cd and Zn are PROHIBITED on titanium; Ag over Ni is acceptable | anodizing | (anodic process) | titanium |
| dissimilar_metal_protection_titanium | rank2_metallic_coating_plus_paint | true | Rank 2: Apply metallic coating (Cd and Zn PROHIBITED; Ag over Ni acceptable) post-treated with paint or resin coating system; Cd and Zn are prohibited coatings on titanium | metallic coating + organic coating | (Ag over Ni per applicable spec) | titanium |
| dissimilar_metal_protection_titanium | rank3_metallic_coating_sealed | true | Rank 3: Apply metallic coating (Cd and Zn PROHIBITED; Ag over Ni acceptable) with faying edges sealed; for electrical or thermal conducting purposes; Cd and Zn are prohibited | metallic coating + sealed faying edges | (Ag over Ni per applicable spec) | titanium |
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