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ITSC 2022, Thermal Spray 2022: Proceedings from the International Thermal Spray Conference, 729-735, May 4–6, 2022,
.../asm.cp.itsc2022p0729 Copyright © 2022 DVS Media GmbH® All rights reserved. Dynamic impact wear analyses of selected cobalt based HVOF sprayed coatings S. Houdkova, J. Duliskovic J. Daniel Impact testing appears as a most promising tool for gaining information on coating behavior in load-bearing applications. During...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 307-314, May 24–28, 2021,
..., the oxidation behavior of two cobalt base alloys, CoCrMoSi (T14) and CoCrNiMoSi (T19), was evaluated in superheated steam (SHS, 0.1MPa) at 800 °C for up to 500 hours. After the exposure, both T14 and T19 alloys experienced weight gain caused by oxidation. Visual observation and SEM surface analysis revealed...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 1153-1157, June 7–9, 2017,
... Abstract Wear-resistant cobaltbased alloy (Stellite 12) coatings deposited by plasma transferred arc (PTA), commonly used to protect critical mechanical components in harsh environments, were modified by addition of hard ceramic particles (TiC) and solid lubricant compounds (MoS 2 and CaF 2...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 1086-1091, May 11–14, 2015,
... Abstract In nuclear plants, the replacement of hardfacing Stellite, a cobalt-base alloy, on parts of the piping system in connection with the reactor has been investigated since the late 60’s. Various Fe-base or Ni-base alloys, Co-free or with a low content of Co, have been developed...
Proceedings Papers

ITSC 2013, Thermal Spray 2013: Proceedings from the International Thermal Spray Conference, 85-90, May 13–15, 2013,
... and processes are analyzed by cyclic polarization testing and optical and scanning electron microscopy. Test results are presented and discussed along with the relative merits of each process. atmospheric plasma spraying cobalt base coatings corrosion properties high-velocity oxyfuel spraying laser...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 157-161, September 27–29, 2011,
... httpsdoi.org/10.31399/asm.cp.itsc2011p0157 Copyright © 2011 DVS Media GmbH, Düsseldorf All rights reserved Investigation of mechanical properties of coatings and bulk components of various grain sized tungsten-carbide-cobalt based materials C. Melnyk, Cerritos/USA, R. Gansert, Simi Valley/USA, D. Lajun, B...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 1021-1025, September 27–29, 2011,
... by this technique. However, the powdered/atomized material used that forms the thermal spray, can play an important role in the solidification of coatings depending on their chemical composition and their grain size. This study analyzed the solidification of PTA coatings processed with an atomized cobalt based...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 1151-1156, September 27–29, 2011,
... alloys with modified physical properties. In this study nickel and cobalt based super alloy materials were arc sprayed with pure molybdenum wire to tailor corrosion and wear resistance of the coatings. Coatings for the tests were sprayed using two different twin wire Sulzer Metco arc-spraying units...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 183-188, May 3–5, 2010,
... Abstract Damage of marine screw propeller parts made of aluminum bronze cast material caused by cavitation erosion is one of the serious problems. Erosion resistant thermal spray coating on aluminum-bronze material is expected to extend lifetime of such propellers. In this study, Cobalt-based...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 556-561, May 4–7, 2009,
... Abstract This study assesses the potential of kinetic-spray coatings for dealing with the effects of soldering and erosion on aluminum casting dies. In the experiments, molybdenum-boride cermet and cobalt-based alloy powders are cold sprayed onto SKD61 substrates. Coating microstructure...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 1496-1500, June 2–4, 2008,
... Abstract Three types of cobalt-based cermet coatings were prepared by high velocity oxy-fuel (HVOF) spraying using cobalt- clad TiC-50Co, SiC-50 Co and WC-18Co powders. The microstructure of three coatings was characterized using a scanning electron microscope (SEM). The adhesive strength...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 684-688, June 2–4, 2008,
... improved to 200 – 400 N/mm 2 in proportion to the width of the precipitate-free diffusion layer formed along the interface, although the shearing adhesion strength of the as-sprayed coating was only 30 N/mm 2 . adhesion strength cobalt-based self-fluxing alloys diffusion microstructure steel...
Proceedings Papers

ITSC 2005, Thermal Spray 2005: Proceedings from the International Thermal Spray Conference, 896-901, May 2–4, 2005,
... it was possible to influence positively the melt flow and to carry out successfully coatings. Finally the transferability was successfully proven on a complex three dimensional component. cobalt-based alloys corrosion resistance nickel-based alloys plasma powder arc welding plasma transferred arc...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 306-311, March 4–6, 2002,
... Abstract Thermally sprayed hardmetal coatings are often used to protect valves in steam turbines against wear. Normally the valve spindles are made of CrMo steel and their bearings are made of Stellite, a cobalt-base alloy. In this investigation, a block-on-ring wear test is used with rings...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 749-754, March 4–6, 2002,
... examines the microstructure and composition of SiC nickel and cobalt-base composite coatings and investigates their corrosion and wear behaviors. Paper includes a German-language abstract. corrosion protection high-velocity oxyfuel spray coating SiC composite coatings SiC composite powders wear...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 985-990, March 4–6, 2002,
... of Cobalt-base PTA Layers Tested in a Molten Zn-Al Bath H.-J. Kim and B.-H. Yoon, Pohang/ROC Mikrostruktur und Verschleißverhalten von Kobalt-Basis-PTA-Schichten in Zn-Al-Bädern Untersuchungen zum verbesserten Verschleißverhalten wurden an PTA-beschichteten Muffen und Buchsen aus der Galvanotechnik...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 299-303, May 25–29, 1998,
... measurements were conducted at various temperatures, and the cross-section of wear tracks was observed using microscopy. The results obtained shed new light on the high-temperature wear mechanisms of plasma-sprayed coating layers in Co-base alloy. cobalt based alloys microhardness plasma sprayed...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1007-1012, May 25–29, 1998,
... of nickel or cobalt based powders, comparing their wear resistance with the behaviour of nodular cast iron specimens. On the basis of the wear tests, the most promising coating materials were applied to steel rolls and their behaviour and duration on a rod rolling plant were compared with those of nodular...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1013-1017, May 25–29, 1998,
... Abstract Plasma transferred arc (PTA) welding is widely used in the petroleum and chemical industry to deposit nickel and cobalt-based materials on key parts for the purpose of surface modification. As test results show, the process improves corrosion, wear, and high-temperature resistance...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 83-90, September 15–18, 1997,
...) and Plasma Spray systems. Hard facing cobalt based alloys were evaluated on coupons in the laboratory. Testing was performed using a cavitating jet erosion apparatus utilizing an operating pressure of 27.6 MPa. The results were compared to welded 308 stainless steel. Cavitation resistant austenitic stainless...