Search results
Results from the WOW.Com Content Network
Zinc chromate, Zn Cr O 4, is a chemical compound, a salt containing the chromate anion, appearing as odorless yellow powder or yellow-green crystals, but, when used for coatings, pigments are often added.
Zinc chromate conversion coating on small steel parts. Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys.
The chromate and dichromate ions are fairly strong oxidizing agents. Commonly three electrons are added to a chromium atom, reducing it to oxidation state +3. In acid solution the aquated Cr 3+ ion is produced. Cr 2 O 2− 7 + 14 H + + 6 e − → 2 Cr 3+ + 7 H 2 O ε 0 = 1.33 V. In alkaline solution chromium(III) hydroxide is produced.
Dichromate: Cr 2 O 2 ... Zinc oxide is white, but at higher temperatures becomes yellow, returning to white as it cools. Colors of various salts Name
The Cronak process is a conventional chromate conversion coating process developed in 1933 by The New Jersey Zinc Company. [1] It involves immersing a zinc or zinc-plated article for 5 to 15 seconds in a chromate solution, typically prepared from sodium dichromate and sulfuric acid. [2]
Zinc is a key mineral that helps our immune system and cell reproduction. Here's what you need to know about the mineral, and where it comes from. This Is What Zinc Does for Your Body
If you’ve ever dealt with acne, you're probably familiar with certain skincare ingredients that are recommended for treating breakouts like salicylic acid, benzoyl peroxide and retinol. Each of ...
Plus, food sources of zinc, who needs a zinc supplement, three zinc supplements to consider, potential risks of zinc supplements, how much to take, and more.