Chromatisation TRIZ Cases

Organic heteroatom compounds with hexavalent chromium form a dense copper foil passivation layer that resists 210°C oxidation with lower treatment cost.

A two-layer ZnNi coating with graded Ni content preserves bend workability while maintaining heat and corrosion resistance at pipe bends.

A chromium-containing layer with light-element-rich linear regions improves corrosion resistance at BPA-free painted parts without hexavalent chromium.

Learn how dual nickel layers with controlled potential protect copper or copper-alloy bases beneath trivalent chromium plating while preserving appearance.

This case uses a controlled zinc metal-treated layer on copper foil to improve blister resistance without inert-gas curing.

A steel foil container uses a gradient nickel layer and chromium treatment to resolve corrosion resistance trade-offs in battery electrolytes.

Noble metal dispersion in valve metal grain boundaries sustains high oxygen overvoltage, resolving electrode life reduction during ozone production.

Controlling recrystallization ratios and limiting surface nitriding resolves cracking risks in ultrathin stainless steel foils for battery cases.

Textured stainless steel surfaces with enriched chromium maintain low contact resistance in fuel cell separators.

Magnesium or calcium chloride in the cleaning fluid adheres to copper foil via chemical bonding, resolving oxidation and acid corrosion issues.

A chromium(III)-based process forms durable passivation layers on zinc, magnesium, and aluminum substrates.

Alkaline etchant solution treats metal substrate surfaces to achieve controlled roughness for inorganic finish application.

A surface-treated steel sheet with a controlled water contact angle and low alkali metal ratio on its chromium oxide layer.