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Innovations
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Shiny Science: A New Substitute for Hexavalent Chromium Lance Frazer Abstract
Hexavalent chromium is valued for its brightness, durability, and resistance to corrosion. However, the metal is a potent human carcinogen and can also cause dermal irritation as well as kidney and liver damage. In a bid to replace hexavalent chromium with a safer alternative, investigators at the Massachusetts Institute of Technology are tailoring nanostructures of nickel and tungsten that duplicate many of hexavalent chromium's benefits without its known problems. Although this replacement hasn't been tested across the broad spectrum of chromium applications, experiments to date have yielded promising results.
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