Design engineers are fuming mad about the lack of decent options for cadmium as a plating material. A couple made comments in a recent study conducted by the Reed Business Information Research Department for Design News. “We need an environmentally friendly replacement with decent cost and performance,” says an engineer who designs equipment for in house use. ”These days, cadmium is effectively banned for environmental reasons, but none of the possible replacements meet all the performance requirements.” Cadmium has been widely used as a plating material because it offers good corrosion resistance, cathodic protection of steel, galvanic compatibility with aluminum, as well as excellent lubricity. Cadmium can be dyed to many colors and can be used as a final finish or a paint base. Inhalation of cadmium-containing fumes can result in chemical pneumonitis, pulmonary edema, and death. Human exposures to environmental cadmium are primarily the result of the burning of fossil fuels and municipal wastes It’s one of six substances banned by the European Union’s Restriction on Hazardous Substances (RoHS) directive.
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The amount of plastic clogging the ocean continues to grow. Some startling, not-so-good news has come out recently about the roles plastic is playing in the ocean, as well as more heartening news about efforts to collect and reuse it.
Optomec's third America Makes project for metal 3D printing teams the LENS process company with GE Aviation, Lockheed, and other big aerospace names to develop guidelines for repairing high-value flight-critical Air Force components.
A self-propelled robot developed by a team of researchers headed by MIT promises to detect leaks quickly and accurately in gas pipelines, eliminating the likelihood of dangerous explosions. The robot may also be useful in water and petroleum pipe leak detection.
Aerojet Rocketdyne has built and successfully hot-fire tested an entire 3D-printed rocket engine. In other news, NASA's 3D-printed rocket engine injectors survived tests generating a record 20,000 pounds of thrust. Some performed equally well or better than welded parts.
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