In a new EU-funded project, ultra-short laser pulses modify material surfaces so that metal powder from a cold gas jet can adhere more easily. With Cold Spray Technology, coating lightweight materials such as plastics or carbon fiber reinforced plastic (CFRP) becomes significantly simpler. The EU research project “Efficient Manufacturing of Laser-Assisted Cold-Sprayed Components” (EMLACS) unites five partners from industry and research who want to extend low-pressure cold gas spraying to new applications.
Cold Gas Spraying is an additive manufacturing process in which metal powders are accelerated to supersonic speeds to adhere to material surfaces. The material deposition process is based on the kinetic energy of the particles.
A thick layer (>0.5 mm) is deposited with no thermal defect in the substrate. The deposited layer can be directly machined or reworked. The main advantages of low-pressure cold gas spraying are the lack of heat input, high processing speed, and low investment cost. New material combinations are especially promising in automotive and aeronautics.
The main challenge in this technology is the adherence of the first layer on the workpiece. The aim of the EU research project “Efficient Manufacturing of Laser-Assisted Cold-Sprayed Components” (EMLACS) will improve adhesion on different substrates by using high-speed laser surface structuring with integrated ns and ps lasers with low-pressure cold gas spraying. New material combinations can then be developed for industrial use.
The deposition of metallic materials (Cu or Al) on carbon fiber and glass fiber reinforced plastic (CFRP and GFRP) substrates is being investigated, which has already created significant interest in the aeronautic and automotive industries. In addition, the new technology can be applied in novel ways in electronics manufacturing. As an example, Cold Gas Spraying may deposit a copper layer on a non-conducting housing for fanless heat removal from electronic components.
The project team is composed of French, Dutch, and German partners. Dycomet Europe (NL) brings cold gas spraying expertise, Edgewave (GER) delivers high-power short-pulsed laser technology, and Industrial Laser Systems (FR) is acting as the system integrator and coordinator of the project. Research teams from Université de Technologie de Belfort-Montbéliard (UTBM, FR) Fraunhofer-Institute for Laser Technology ILT (GER) are developing the process.
The EMLACS project (reference number 606567) has been running since June 2014 under Research for SMEs - FP7-SME-2013 and has been funded by the Research Executive Agency (REA) for 24 months.
Industrial Laser Systems
Telephone +33 1 55950950
21-23 rue Aristide Briand, 92170 Vanves, France
Dr.-Ing. Wolfgang Knapp
Head of the Coopération Laser Franco-Allemande CLFA
Telephone +33 2 2844 3711
Fraunhofer-Institute for Laser Technology ILT
52074 Aachen, Germany
Petra Nolis | Fraunhofer-Institut für Lasertechnik ILT
PRESTO – Highly Dynamic Powerhouses
15.05.2017 | JULABO GmbH
Making lightweight construction suitable for series production
24.04.2017 | Laser Zentrum Hannover e.V.
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy