New Non-Toxic Coating Makes Aluminum Corrosion-Free
redOrbit Staff & Wire Reports – Your Universe Online
Researchers have developed a new, non-toxic coating for aluminum that can replace the carcinogenic chromate coatings used for more than half a century to protect aluminum from corrosion.
“There is no question that this will be able to replace the chromate-based coating,” said lead researcher Dev Chidambaram, assistant professor of materials science and engineering at the University of Nevada, Reno. “The coating has shown exceptional performance.”
Attempts to replace chromate coatings with environmentally friendly coatings have been underway for decades.
Awareness of the dangerous effects of chromates was brought to light in 1993 by the real-life incident involving Erin Brokovich, which was depicted in the movie of the same name, released in 2000.
Although the use of chromates for consumer and automotive applications has been banned, it is still in use by the defense and aerospace industries under various exemptions. These exemptions are due, primarily, to the unavailability of suitable replacements along with the high human and financial costs of failure from corrosion.
But the search for a suitable replacement has been elusive, primarily due to the “self-healing” characteristic of the coating, which allows it to heal itself after being damaged or scratched. When scratched, the coating components from nearby sites migrate to the damaged region and re-protect the underlying alloy.
But Chidambaram’s formulation performs comparably to the chromate formula in its ability for self-healing, and can be applied to all aluminum products. It also offers an environmentally-safe molybdate-based coating that provides adequate corrosion protection to aluminum.
The researchers developed and tested more than 300 coatings before arriving at their ultimate formulation. They used a complimentary suite of advanced surface analytical techniques such as Raman microspectroscopy, Fourier transform infrared spectroscopy, energy dispersive spectroscopy, secondary ion mass spectroscopy and X-ray photoelectron spectroscopy to conclusively prove the presence of molybdate in the scratched region.
Next, they used electrochemical testing to demonstrate that the coating re-protected itself via self-healing upon scratch test.
The team is still working to optimize the coating formulation for even greater protection.
“This has taken 14 years of work, continuing on work I did at the State University of New York at Stony Brook and the Brookhaven National Laboratory,” Chidambaram said in a press release.
The researchers presented their work last week at the international Pacific Rim Meeting on Electrochemical and Solid-State Science in Hawaii.
redOrbit.com
offers Science, Space, Technology, Health news, videos, images and
reference information. For the latest science news, space news,
technology news, health news visit redOrbit.com frequently. Learn
something new every day.\”
2012-10-23 20:33:22
Source: http://www.redorbit.com/news/science/1112718474/new-non-toxic-coating-makes-aluminum-corrosion-free/
Source:
Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.
"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.
LION'S MANE PRODUCT
Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules
Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.
Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.
| Visits: | 1,708,647,295 |
| Stories: | 8,450,881 |
Whistler Blowers, Insiders
