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 The Future of Mobility: tomorrow’s ways of getting from A to B
07.09.2017 | Fraunhofer-Institut für Angewandte Informationstechnik FIT

nachricht ShAPEing the future of magnesium car parts
23.08.2017 | DOE/Pacific Northwest National Laboratory

All articles from Automotive Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Highly precise wiring in the Cerebral Cortex

Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.

The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...

Im Focus: Tiny lasers from a gallery of whispers

New technique promises tunable laser devices

Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...

Im Focus: Ultrafast snapshots of relaxing electrons in solids

Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!

When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...

Im Focus: Quantum Sensors Decipher Magnetic Ordering in a New Semiconducting Material

For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.

Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...

Im Focus: Fast, convenient & standardized: New lab innovation for automated tissue engineering & drug

MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.

MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

“Lasers in Composites Symposium” in Aachen – from Science to Application

19.09.2017 | Event News

I-ESA 2018 – Call for Papers

12.09.2017 | Event News

EMBO at Basel Life, a new conference on current and emerging life science research

06.09.2017 | Event News

 
Latest News

Comet or asteroid? Hubble discovers that a unique object is a binary

21.09.2017 | Physics and Astronomy

Cnidarians remotely control bacteria

21.09.2017 | Life Sciences

Monitoring the heart's mitochondria to predict cardiac arrest?

21.09.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>