Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Faster Test For Checking The Efficiency Of The Paints Used As Protection Against Corrosion In The Automotive Industry

14.07.2004


Researchers from the Area of Materials Science and Metallurgical Engineering at the Universitat Jaume I (UJI), Spain, have devised a quicker method to evaluate the systems used in the automotive industry to protect the metal chassis of vehicles against corrosion. This new technique allows the time required to carry out such tests to be reduced from two months to just one day.

The metal chassis of automobiles are under constant exposure to environmental conditions (high ambient relative humidity, proximity to the sea, and pollution in towns and cities) which cause them to oxidize. To prevent this, until recently, manufacturers coated the metal with primers containing chrome and lead pigments that offered a high degree of protection against corrosion, but were later banned because of their harmful effects on health. To replace these substances, the automotive industry is now searching for compounds that offer the same characteristics as those used up till now and which are harmless. This makes formulating the paints a more difficult task because of the greater complexity involved in finding pigments that are equally efficient and in combining the increased number of components that go to make up the primer.

Until now engineers submitted each formulation to a test lasting between 500 and 2000 hours which allowed them to measure their anticorrosive capacity as well as their adherence to the metallic substrate. Yet, a testing time of almost two months was not at all practical for the automotive industry and a group of researchers at the UJI, led by Professor Julio Suay, has designed a new test that accomplishes the same results in just 24 hours.



The technique uses electrochemical principles to test the permeability of the coating to corrosive agents and its capacity to adhere to the bodywork of the automobile. The findings of the research that gave rise to this new test have recently been published in the journals Progress in Organic Coatings and Journal of Coatings Technology.

Hugo Cerdà | alfa
Further information:
http://www.uji.es

More articles from Automotive Engineering:

nachricht Did you know how many parts of your car require infrared heat?
23.10.2017 | Heraeus Noblelight GmbH

nachricht Two intelligent vehicles are better than one
04.10.2017 | Ecole Polytechnique Fédérale de Lausanne

All articles from Automotive Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

Previous evidence of water on mars now identified as grainflows

21.11.2017 | Physics and Astronomy

NASA's James Webb Space Telescope completes final cryogenic testing

21.11.2017 | Physics and Astronomy

New catalyst controls activation of a carbon-hydrogen bond

21.11.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>