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  2. Chrome plating - Wikipedia

    en.wikipedia.org/wiki/Chrome_plating

    Hard chrome plating. Hard chrome, also known as industrial chrome or engineered chrome, is used to reduce friction, improve durability through abrasion tolerance and wear resistance in general, minimize galling or seizing of parts, expand chemical inertness to include a broader set of conditions (such as oxidation resistance), and bulking ...

  3. Chromate conversion coating - Wikipedia

    en.wikipedia.org/wiki/Chromate_conversion_coating

    Recent revisions of ASTM B633 defer to ASTM F1941 for zinc plating mechanical fasteners, like bolts, nuts, etc. 2019 is the current revision for ASTM B633 (superseded the revision from 2015), which raised required tensile thresholds when confronting hydrogen embrittlement issues and addressed embrittlement concerns in a new appendix.

  4. Hexavalent chromium - Wikipedia

    en.wikipedia.org/wiki/Hexavalent_chromium

    Cambridge Plating Company, now known as Purecoat North, was an electroplating business in Belmont, Massachusetts. A report was conducted by the Agency for Toxic Substances and Disease Registry (ATSDR), to evaluate the association between environmental exposures from the Cambridge Plating Company and health effects on the surrounding community.

  5. Chromium toxicity - Wikipedia

    en.wikipedia.org/wiki/Chromium_toxicity

    Contact with products containing chromates can lead to allergic contact dermatitis and irritant dermatitis, resulting in ulceration of the skin—a condition sometimes called chrome ulcers. Workers that have been exposed to strong chromate solutions in electroplating, tanning, and chrome-producing manufacturers may also develop chrome ulcers.

  6. Electrochemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_coloring...

    Black nickel plating was developed around 1905, and between the two wars, black chrome plating (first German patent 1929.GP 607, 420), which saw wider use only from the mid-1950s. [14] After the First World War, the first procedures for anodic oxidation and coloring of anodically oxidized aluminium were developed (1923, 1924.DRP. 413876).

  7. Talk:Chrome plating - Wikipedia

    en.wikipedia.org/wiki/Talk:Chrome_plating

    4. Acid chrome plating is dependent on a "slime layer" containing Cr(+2) that is critical, formed in the initial start of current. 5. Cr(+3) plating isn't new or difficult and has much better throwing power and adhesion to base metals. Problem is matte finish. Great for corrosion resistant plate of small parts but more common zinc-nickel etc ...

  8. Chromate and dichromate - Wikipedia

    en.wikipedia.org/wiki/Chromate_and_dichromate

    School bus painted in Chrome yellow [7] Approximately 136,000 tonnes (150,000 tons) of hexavalent chromium, mainly sodium dichromate, were produced in 1985. [8] Chromates and dichromates are used in chrome plating to protect metals from corrosion and to improve paint adhesion.

  9. Diffusion barrier - Wikipedia

    en.wikipedia.org/wiki/Diffusion_barrier

    If chromium is plated directly onto the steel, then their different thermal expansion coefficients will cause the chrome plating to peel off the steel. Nickel, Nichrome, tantalum, hafnium, niobium, zirconium, vanadium, and tungsten are a few of the metal combinations used to form diffusion barriers for specific applications.

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