TY - JOUR A1 - Bontrup, Heinz-Josef T1 - Kurze Vollzeit für alle - die 30-Stunden-Woche JF - Politik Magazin. Frauen, Gesellschaft, Bildung, Kultur Y1 - 2015 IS - 329 SP - 4 ER - TY - JOUR A1 - Bontrup, Heinz-Josef T1 - Mächtige Riesen. Die Konzentration der Wirtschaft und ihre Folgen JF - Frankfurter Rundschau Y1 - 2015 VL - 71 SP - 16 ER - TY - JOUR A1 - Bontrup, Heinz-Josef T1 - Die "Kannibalisierung" der Arbeit. Die Industrie 4.0 muss in ein erweitertes Arbeitsrecht integriert werden JF - Neues Deutschland. Sozialistische Tageszeitung Y1 - 2015 VL - 70 SP - 4 ER - TY - JOUR A1 - Bontrup, Heinz-Josef T1 - Belastung hält sich in Grenzen. Kosten der Energiewende sind nur eine Marginalie JF - Frankfurter Rundschau Y1 - 2015 VL - 71 SP - 25 ER - TY - JOUR A1 - Bontrup, Heinz-Josef T1 - Pervertierter Kapitalismus JF - Ossietzky. Zweiwochenschrift für Politik, Kultur, Wirtschaft Y1 - 2016 VL - 19 IS - 15 SP - 545ff ER - TY - RPRT A1 - Bontrup, Heinz-Josef ED - Progress-Institut für Wirtschaftsforschung Bremen, T1 - Bilanzanalyse der Landwirtschaftlichen Brandkasse Hannover Y1 - 1988 ER - TY - RPRT A1 - Bontrup, Heinz-Josef ED - Progress-Institut für Wirtschaftsforschung Bremen, T1 - Externe Bilanzanalyse des HDI - Haftpflichtverbandes der deutschen Industrie Y1 - 1988 ER - TY - RPRT A1 - Bontrup, Heinz-Josef A1 - Bohnenkamp, Ulrike A1 - Eisbach, Joachim T1 - Kenntnisse und Einstellungen von Betriebsräten zu Innovationen und Umweltschutz im Betrieb. Forschungsbericht im Rahmen des Projektes: Partizipative Technikgestaltung des Programmes: „Sozialverträgliche Technikgestaltung der Landesregierung Nordrhein-Westfalen“ Y1 - 1988 ER - TY - CHAP A1 - Rost, Ulrich A1 - Rigou, Veronica A1 - Marginean, Gabriela A1 - Brodmann, Michael A1 - Brandl, Waltraut T1 - Oxygen Plasma Activated Carbon Nanofibres as Electrode Material for Proton Exchange Membrane Fuel Cells T2 - Konferenz: Junior Euromat 2014: The Major Event for Young Materials Scientists, 21.-25. Juli 2014 in Lausanne (Schweiz) N2 - To further increase platinum utilisation in PEM fuel cells CNFs are investigated as catalyst support material due to the CNF’s high specific surface area. Furthermore, CNFs provide suitable properties concerning corrosion resistance as well as electrical conductivity in contrast to conventional carbon supports. This work presents the results of an electrode preparation procedure based on O2 plasma activated CNFs. The plasma treatment leads to CNF dispersibility in alcohol/water for a spray coating process. Furthermore, O2 plasma activation enhances metal deposition on the CNF’s surface. Pulse plating procedure as well as wet chemical metal synthesis have been used for particle deposition. For pulse plating a potentiostat/galvanostat type MMates 510 AC from Materials Mates, Italy has been used. Electrode morphology has been determined in SEM type XL 30 ESEM from Philips, The Netherlands. Y1 - 2014 ER - TY - JOUR A1 - Ciubotariu, Costel-Relu A1 - Secosan, Evelina A1 - Marginean, Gabriela A1 - Frunzaverde, Doina A1 - Campian, Viorel Constantin T1 - Experimental Study Regarding the Cavitation and Corrosion Resistance of Stellite 6 and Self-Fluxing Remelted Coatings JF - Strojniški vestnik - Journal of Mechanical Engineering N2 - This paper aims to compare cobalt-based (type Stellite 6) and nickel-based self-fluxing alloys (type NiCrBSiMo) regarding both their cavitation erosion resistance and corrosion resistance. The two types of protective layers were thermally sprayed onto a substrate of martensitic stainless steel. In order to improve the layers' characteristics and their metallurgical bonding to the substrate, the Stellite 6 coating was laser remelted, while the NiCrBSiMo coating was treated by flame fusion. The cavitation erosion resistance of the two materials was evaluated by measurements of the mean depth of erosion developed during a testing period of 165 minutes, using a 20 kHz ultrasonic vibrator at a peak-to-peak amplitude of 50 μm. In addition, the corrosion resistance of the layers was assessed by potentiodynamic corrosion tests carried out in H2SO4 + NaCl solution at room temperature, using calomel as reference electrode. In order to highlight the differences regarding the behaviour of the two protective materials, the authors also carried out microstructural investigations of the layers before and after exposure to cavitation and corrosion. The investigations showed that both types of layers can provide improved protection of the martensitic stainless steel substrate against cavitation, whilst the NiCrBSiMo coating additionally confers significantly increased resistance to corrosion. KW - Cavitation KW - Corrosion KW - Laser remelting KW - Self-fluxing alloys KW - Stellite 6 Y1 - 2016 VL - 62 IS - 3 SP - 154 EP - 162 ER -