{"id":17,"date":"2025-04-01T08:51:14","date_gmt":"2025-04-01T08:51:14","guid":{"rendered":"https:\/\/www.amza-ltd.com\/en\/?page_id=17"},"modified":"2025-08-26T08:32:11","modified_gmt":"2025-08-26T08:32:11","slug":"metal-finishing-and-surface-preparation","status":"publish","type":"page","link":"https:\/\/www.amza-ltd.com\/en\/products-and-technologies\/metal-finishing-and-surface-preparation\/","title":{"rendered":"Metal Finishing and Surface Preparation"},"content":{"rendered":"\t\t
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Engineering Finishes<\/strong><\/h3>

Electrolytic Zinc<\/strong>
Alkaline zinc based on sodium and potassium
Acid zinc
Cyanide zinc
Zinc alloys: zinc-nickel, zinc-iron<\/p>

Zinc Passivation<\/strong>
Chromate passivation
Trivalent RoHS-compliant passivation available in various colors<\/p>

Electrolytic Nickel<\/strong>
Nickel sulfate
Nickel sulfamate<\/p>

Electroless Nickel<\/strong>
Low, medium, and high phosphorus content
Nickel-phosphorus-PTFE alloy
Nickel-boron alloy
RoHS-compliant versions, including lead- and cadmium-free
Black electroless nickel<\/p>

Electrolytic Copper<\/strong>
Cyanide copper
Bright acid copper for decorative use
Acid copper for electronics<\/p>

Blackening<\/strong>
Blackening solutions for steel, stainless steel, copper, and brass<\/p>

Hard Chrome Plating<\/strong>
Chromic acid and catalyst for improved coating efficiency<\/p>

Electrolytic Precious Metal Plating<\/strong>
Bright silver with or without antimony
Matte silver
Soft gold
Hard gold (gold-cobalt, gold-nickel)<\/p>

Phosphating<\/strong>
Iron phosphate
Manganese phosphate
Zinc phosphate for immersion and spray applications<\/p>

Decorative Finishes<\/strong><\/h3>

Platinum
Rhodium
Platinum-rhodium alloy
Gold in various karats and shades
Decorative silver
Bronzex as a nickel substitute
Trivalent chrome<\/p>

Surface Preparation and Stripping Processes<\/strong><\/h3>

Cleaners<\/strong>
Chemical and electrochemical cleaners
Acidic and alkaline rust removers
Acid inhibitors
Biological cleaners<\/p>

Strippers<\/strong>
Tin from copper
Nickel from steel, stainless steel, and copper
Copper from steel
Electroless nickel from steel and aluminum
Gold from nickel and copper
and more<\/p>

Surface Preparation and Finishing for Aluminum and Alloys<\/strong><\/h3>

Non-etch cleaners for aluminum
Chromium-free acid etching
Alkaline satin etching
Zincate with and without cyanide
Nitrate-free zincate remover
Nitrate-free smut remover
Yellow chromate passivation (QPL approved)
White trivalent passivation (QPL approved)
Phosphate substitutes for paint prep in profile industry
Anodizing pigments
Anodizing performance-enhancing additives
Anodizing sealers
Teflon for anodizing<\/p>

Plastic Plating<\/strong><\/h3>

Plastic softening solutions
Chrome-free etching
Conditioners for improved catalyst absorption
Palladium-based colloidal and ionic activations
Cold electroless nickel strike
Electroless nickel build-up at 55\u00b0C for heat-sensitive plastics
Cold electroless copper
Medium and high thickness electroless copper<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Additional Technologies\n\n\n\n\n\n\n\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Nitric acid-free passivation based on citric acid, fully compliant with aerospace and industrial standards \u2013 by Stellar<\/strong><\/p>

Electrocoating Lacquers<\/strong><\/h3>

Transparent and colored electro-lacquers, offering a simple and cost-effective solution for the decorative market<\/p>

Cathodic E-Coatings<\/strong><\/h3>

Advanced cathodic paint systems for the automotive industry and high-performance coating processes \u2013 by PPG<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

  Engineering Finishes Electrolytic ZincAlkaline zinc based on sodium and potassiumAcid zincCyanide zincZinc alloys: zinc-nickel, zinc-iron Zinc PassivationChromate passivationTrivalent RoHS-compliant passivation available in various colors Electrolytic NickelNickel sulfateNickel sulfamate Electroless NickelLow, medium, and high phosphorus contentNickel-phosphorus-PTFE alloyNickel-boron alloyRoHS-compliant versions, including lead- and cadmium-freeBlack electroless nickel Electrolytic CopperCyanide copperBright acid copper for decorative useAcid copper for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":15,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-17","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/pages\/17","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/comments?post=17"}],"version-history":[{"count":130,"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/pages\/17\/revisions"}],"predecessor-version":[{"id":2584,"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/pages\/17\/revisions\/2584"}],"up":[{"embeddable":true,"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/pages\/15"}],"wp:attachment":[{"href":"https:\/\/www.amza-ltd.com\/en\/wp-json\/wp\/v2\/media?parent=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}