Researchers measure electron emission to improve understanding of laser-based metal 3-D printing

Researchers measure electron emission to improve understanding of laser-based metal 3D printing
Researchers measured the emission of electrons from the surface of stainless steel under laser powder bed fusion (LPBF) conditions, demonstrating the potential for using thermionic emission signals to detect phenomena that can produce defects in parts and improve understanding of the LPBF process. The top image shows a multi-physics simulation of laser-induced melting of stainless steel, showing the electron emission signal primarily produced at the front of the surface depression. The bottom image depicts cross-sections of laser tracks produced in stainless steel. Monitoring of the thermionic emission can detect transition between conduction (left) and keyhole (right) mode welding regimes. Credit: Aiden Martin/LLNL

Lawrence Livermore National Laboratory (LLNL) researchers have taken a promising step in improving the reliability of laser-based metal 3-D printing techniques by measuring the emission of electrons from the surface of stainless steel during laser processing.


Researchers collected thermionic emission signals from 316L stainless steel under laser powder

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Faraday Future Joins Zero Emission Transportation Association (ZETA) Calling for an Accelerated Transition to Electric Vehicles

  • Faraday Future Joins 29 Others as a Founding Member of New Zero Emission Transportation Association (ZETA) in the US
  • Coalition Aims to Push for 100 Percent Electric Vehicle Sales by 2030 and Will Help Secure a Path for the Future of Electric Mobility
  • As a Forward-thinking Leader in the Electric Vehicle Space, Faraday Future Is Committed to Clean Energy EV Technology

Faraday Future (FF), a California-based global shared intelligent mobility ecosystem company, today announced that it has joined a coalition made up of 30 companies to launch the Zero Emission Transportation Association (ZETA), an organization dedicated to achieving 100% electric vehicle (EV) sales in the United States by 2030. Founding members are industry leaders in the EV space including Tesla, Uber and EVgo whose values and strategic interests support ZETA’s principles of EV adoption and growth in the US.

ZETA is the first coalition of its kind advocating for 100%

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New method could potentially reduce dioxide emission into the atmosphere and slash costs of chemical manufacturing — ScienceDaily

Researchers at the National Institute of Standards and Technology (NIST) and their colleagues have demonstrated a room-temperature method that could significantly reduce carbon dioxide levels in fossil-fuel power plant exhaust, one of the main sources of carbon emissions in the atmosphere.

Although the researchers demonstrated this method in a small-scale, highly controlled environment with dimensions of just nanometers (billionths of a meter), they have already come up with concepts for scaling up the method and making it practical for real-world applications.

In addition to offering a potential new way of mitigating the effects of climate change, the chemical process employed by the scientists also could reduce costs and energy requirements for producing liquid hydrocarbons and other chemicals used by industry. That’s because the method’s byproducts include the building blocks for synthesizing methane, ethanol and other carbon-based compounds used in industrial processing.

The team tapped a novel energy source from the

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