Impact Coatings AB

Linköping, Sweden

Impact Coatings AB

Linköping, Sweden
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Agency: European Commission | Branch: FP7 | Program: JTI-CP-FCH | Phase: SP1-JTI-FCH.2013.1.2 | Award Amount: 3.81M | Year: 2014

Several automotive OEMs have announced plans for the commercialization of fuel cell vehicles from 2014/15. While this is a clear signal for the readiness of the automotive market, durability, efficiency, power density and cost of the fuel cell stack need further advancements and in some cases substantial improvement in years to come. Industrial fuel cell development in Europe lacks both state-of-the-art stack components and competitive stack suppliers for automotive application. Only a few European component suppliers can deliver mature state-of-the-art stack components such as bipolar plates with the specifications requested by the AIP of the FCH-JU. The COBRA proposal aims to develop best-of-its-class bipolar plates for automotive stacks with superior corrosion resistance and durability while meeting commercial target cost. The project has a multidisciplinary character which implies joint efforts of specialists from various areas: chemistry, physics, material science, fuel cell engineering. Thus the COBRA consortium combines the collective expertise of bipolar plate and coating suppliers, system integrators and research institutes and thus removes critical disconnects between stakeholders. The scientific objectives of this project are elaboration and characterization of low-cost new functional coated bipolar plates highly resistant to corrosion with low contact resistance. The project will contribute in defining new coatings combining passivity and conductive properties by i) material selection, ii) screening of the coating elaboration process, iii) performance evaluation in stack configuration in real operating conditions, iv) techno-economical evaluation for large scale industrial production. Presence of key industrial players in the project and strict orientation towards industrial requirements shall facilitate commercial utilization of the project outcomes. The project is of strategic importance for European competitiveness.

Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: NMP-2007-2.5-1 | Award Amount: 13.86M | Year: 2008

The MORGaN project addresses the need for a new materials for electronic devices and sensors that operate in extreme conditions, especially high temperature, high electric field and highly corrosive environment. It will take advantage of the excellent physical properties of diamond and gallium nitride heterostructures. The association of the two materials will give rise to the best materials and devices for ultimate performance in extreme environments. Both materials possess durability and robustness to high temperature, radiation and electric field. Diamond material exhibits the best mechanical robustness and thermal conductivity, while GaN presents also high electron mobility, giving high power handling and efficiency. III-N systems have other desirable properties for sensor applications in extreme environments. It is the only highly polar semiconductor matrix that has ceramic-like stability and can form heterostructures. It has the highest spontaneous polarisation with a Curie temperature above 1000C for AlN: a lattice matched III-N heterostructure with a built-in polarisation discontinuity is expected to enable transistor action above 1000C. The packaging and metallisation of an electronic device or sensor are important elements in extreme conditions. Metal contacts must be stable and the package must be thermally compatible with the device requirements and chemically stable. MORGaN proposes a novel technological solution to electron device and sensor modules. Advanced 3D ceramic packaging and new metallisation techniques based on the emerging technology of MN\1AXN alloys will also be explored. As such, the vision of MORGaN for materials for extreme conditions is holistic, involving 2 large industrial partners, 2 industrial labs, 6 SMEs and 13 public research partners. The project includes research, demonstration, management, training and dissemination activities.

Frodelius J.,Linköping University | Eklund P.,Linköping University | Beckers M.,Linköping University | Persson P.O.A.,Linköping University | And 3 more authors.
Thin Solid Films | Year: 2010

Sputter deposition from a Ti2AlC target was found to yield Ti-Al-C films with a composition that deviates from the target composition of 2:1:1. For increasing substrate temperature from ambient to 1000 °C, the Al content decreased from 22 at.% to 5 at.%, due to re-evaporation. The C content in as-deposited films was equal to or higher than the Ti content. Mass spectrometry of the plasma revealed that the Ti and Al species were essentially thermalized, while a large fraction of C with energies > 4 eV was detected. Co-sputtering with Ti yielded a film stoichiometry of 2:0.8:0.9 for Ti:Al:C, which enabled growth of Ti2AlC. These results indicate that an additional Ti flux balances the excess C and therefore provides for more stoichiometric Ti2AlC synthesis conditions. © 2009 Elsevier B.V. All rights reserved.

Eklund P.,Linköping University | Beckers M.,Linköping University | Jansson U.,Uppsala University | Hogberg H.,Linköping University | And 2 more authors.
Thin Solid Films | Year: 2010

This article is a critical review of the Mn + 1AXn phases ("MAX phases", where n = 1, 2, or 3) from a materials science perspective. MAX phases are a class of hexagonal-structure ternary carbides and nitrides ("X") of a transition metal ("M") and an A-group element. The most well known are Ti2AlC, Ti3SiC2, and Ti4AlN3. There are ~ 60 MAX phases with at least 9 discovered in the last five years alone. What makes the MAX phases fascinating and potentially useful is their remarkable combination of chemical, physical, electrical, and mechanical properties, which in many ways combine the characteristics of metals and ceramics. For example, MAX phases are typically resistant to oxidation and corrosion, elastically stiff, but at the same time they exhibit high thermal and electrical conductivities and are machinable. These properties stem from an inherently nanolaminated crystal structure, with Mn + 1Xn slabs intercalated with pure A-element layers. The research on MAX phases has been accelerated by the introduction of thin-film processing methods. Magnetron sputtering and arc deposition have been employed to synthesize single-crystal material by epitaxial growth, which enables studies of fundamental material properties. However, the surface-initiated decomposition of Mn + 1AXn thin films into MX compounds at temperatures of 1000-1100 °C is much lower than the decomposition temperatures typically reported for the corresponding bulk material. We also review the prospects for low-temperature synthesis, which is essential for deposition of MAX phases onto technologically important substrates. While deposition of MAX phases from the archetypical Ti-Si-C and Ti-Al-N systems typically requires synthesis temperatures of ~ 800 °C, recent results have demonstrated that V2GeC and Cr2AlC can be deposited at ~ 450 °C. Also, thermal spray of Ti2AlC powder has been used to produce thick coatings. We further treat progress in the use of first-principle calculations for predicting hypothetical MAX phases and their properties. Together with advances in processing and materials analysis, this progress has led to recent discoveries of numerous new MAX phases such as Ti4SiC3, Ta4AlC3, and Ti3SnC2. Finally, important future research directions are discussed. These include charting the unknown regions in phase diagrams to discover new equilibrium and metastable phases, as well as research challenges in understanding their physical properties, such as the effects of anisotropy, impurities, and vacancies on the electrical properties, and unexplored properties such as superconductivity, magnetism, and optics. © 2009 Elsevier B.V. All rights reserved.

Tengdelius L.,Linköping University | Samuelsson M.,Impact Coatings AB | Jensen J.,Linköping University | Lu J.,Linköping University | And 4 more authors.
Thin Solid Films | Year: 2014

ZrB2 thin films have been synthesized using direct current magnetron sputtering from a ZrB2 compound target onto 4H-SiC(0001) and Si(100) substrates kept at different temperatures (no heating, 400 C, and 550 C), and substrate bias voltage (- 20 V to - 80 V). Time-of-flight energy elastic recoil detection analysis shows that all the films are near stoichiometric and have a low degree of contaminants, with O being the most abundant (< 1 at.%). The films are crystalline, and their crystallographic orientation changes from 0001 to a more random orientation with increased deposition temperature. X-ray diffraction pole figures and selected area electron diffraction patterns of the films deposited without heating reveal a fiber-texture growth. Four point probe measurements show typical resistivity values of the films ranging from ~ 95 to 200 μω cm, decreasing with increased growth temperature and substrate bias. © 2013 Elsevier B.V.

Samuelsson M.,Linköping University | Samuelsson M.,Impact Coatings AB | Jensen J.,Linköping University | Helmersson U.,Linköping University | And 2 more authors.
Thin Solid Films | Year: 2012

ZrB2 thin films were grown on Si by high power impulse magnetron sputtering (HiPIMS) from a compound target in an industrial deposition system. By keeping a constant average power while modifying the HiPIMS pulse repetition frequency, the pulse peak current and thereby the degree of ionisation was varied. The films were characterised using X-ray diffraction techniques, scanning electron microscopy, time-of-flight elastic recoil detection analysis, and four-point probe measurements. It was found that the composition of the films matched closely that of the target material, and the films were low in contamination. The films were crystalline with a strong (000n) preferred orientation, and that the residual stress could be adjusted, from tensile to compressive, by increasing the degree of ionisation. The film morphology appeared dense, with a smooth surface, and the resistivity was found to range from 180 to 250 μΩ cm with no clear dependence on frequency in the investigated parameter range. © 2012 Elsevier B.V.

Lauridsen J.,Linköping University | Eklund P.,Linköping University | Jensen J.,Linköping University | Ljungcrantz H.,Impact Coatings AB | And 6 more authors.
Acta Materialia | Year: 2010

Nanocomposite coatings consisting of Ag and TiC x (x < 1) crystallites in a matrix of amorphous SiC were deposited by high-rate magnetron sputtering from Ti-Si-C-Ag compound targets. Different target compositions were used to achieve coatings with a Si content of ∼13 at.%, while varying the C/Ti ratio and Ag content. Electron microscopy, helium ion microscopy, X-ray photoelectron spectroscopy and X-ray diffraction were employed to trace Ag segregation during deposition and possible decomposition of amorphous SiC. Eutectic interaction between Ag and Si is observed, and the Ag forms threading grains which coarsen with increased coating thickness. The coatings can be tailored for conductivity horizontally or vertically by controlling the shape and distribution of the Ag precipitates. Coatings were fabricated with hardness in the range 10-18 GPa and resistivity in the range 77-142 μΩ cm. © 2010 AWE and Crown Copyright. Published by Elsevier Ltd. All rights reserved.

« Columbia team develops new prelithiation method to increase Li-ion battery energy density by 10-30% | Main | DOE’s $10M Advanced Water Splitting Materials Consortium accelerating development of green hydrogen production » Morphic Technologies’ subsidiary, Cell Impact, signed a collaboration agreement with PVD surface coating company Impact Coatings AB concerning new types of surface treatment material for fuel cell flow plates. The arrangement will add coatings from Impact Coatings to the products on offer. Cell Impact’s main operation involves the cost-effective production of flow plates, one of the key components in a fuel cell system. The flow plates are responsible for a large proportion of the costs and their ability effectively to conduct the fuel into the fuel cell is absolutely critical for the entire system’s ability to generate electricity. The collaboration with Impact Coatings is intended to offer completely new surface treatment materials that will lower production costs, improve performance and increase efficiency. The development is being run as a collaborative venture between Cell Impact, Impact Coatings, SP Technical Research Institute of Sweden and the University of Uppsala. The outer layer of the flow plates plays a major role in the durability and effectiveness of the entire system. By protecting the flow plates from the corrosion that the acid environment within the fuel cell would otherwise lead to, different metals and ceramic coatings can extend the life of the fuel cell. To date, the surface coating has primarily been made of various types of precious metals. Impact Coatings has developed a technology that makes it possible to replace the precious metals with other materials, which will reduce the cost of the surface coating by up to 90% without the efficiency of the flow plate being affected.

Impact Coatings AB | Date: 2013-06-18

A continuous reel-to-reel arrangement (1), for transportation of continuous substrate materials (3) from an unwinding material reel (2) to a winding material reel (4), comprises at least two guiding rolls (5) arranged to align the substrate material (3) when being rolled off from the unwinding material reel (2) before entering into at least one treatment zone (6), and at least two guiding rolls (5) arranged to align the substrate material (3) when exiting the at least one treatment zone (6) before being winded up on the winding material reel (4). At least one of the guiding rolls (5) arranged to align the substrate material (3) when exiting the at least one treatment zone is a driving roll (13), and at least one of the guiding rolls (5) arranged to align the substrate material (3) when being rolled off from the unwinding material reel (2) is a braking roll (12), arranged to apply a constant braking force to the substrate material (3) when the substrate material (3) is driven through the at least one treatment zone (6). Thereby, the risk of plastically deforming the substrate material (3) is low during transportation and during unwinding/winding and the risk of subjecting the material to wear is also low.

A material for providing an electrically conducting contact layer, the material comprising a base material being any one of Ag, Cu, Sn, Ni, a first metal salt of one thereof, or an alloy of one or more thereof. The material further comprises In within a range of 0.01 at. % to 10 at. %, Pd within a range of 0.01 at. % to 10 at. %, and, unless already the base material comprises Sn at a higher amount, Sn within a range of 0.01 at. % to 10 at. %. From such material, a contact layer (6) can be provided that, compared to a coating of only the base material, has improved corrosion resistance and low contact resistance. Also disclosed is: an electrically conducting contact element (2) that comprises a substrate (4) and coated thereon a contact layer (6) comprising the material, a method for providing the contact element (2), and uses of the material as contact layer and target material.

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