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ITSC 2022, Thermal Spray 2022: Proceedings from the International Thermal Spray Conference, 798-808, May 4–6, 2022,
... Martensitic Steel (RAFM) as a structural material with a tungsten protective coating. Since there is a considerable thermal mismatch between, a functional graded materials (FGM) concept was proposed. As the formation of undesired intermetallic Fe-W phases as well as oxidation should be avoided, cold gas...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 1531-1534, May 5–8, 2003,
... Abstract Functionally graded (FG) coatings were manufactured by High Velocity Oxy-Fuel (HVOF) thermal spraying and tested aiming for the high temperature applications. Single layers were manufactured and their elastic modulus measured by using Impulse Excitation Technique (IET). Obtained data...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 651-656, June 2–4, 2008,
... functionally graded thick coatings. In order to deposit thick coatings, certain problems have to be overcome. Graded coatings enable gradual variation of the coating composition and/or microstructure, which offers the possibility of reducing residual stress build-up with in coatings. In order to spray...
Proceedings Papers

ITSC 2005, Thermal Spray 2005: Proceedings from the International Thermal Spray Conference, 444-449, May 2–4, 2005,
... Abstract Functionally graded coatings with continuous changes of microstructures and properties across the material are expected to have low residual and thermal stresses and improved bonding strength between base materials and the ceramic coatings. This paper presents a technique to produce...
Proceedings Papers

ITSC 2006, Thermal Spray 2006: Proceedings from the International Thermal Spray Conference, 1231-1236, May 15–18, 2006,
... Abstract Functionally graded material (FGM) designs aim to combat challenges posed by harsh and conflicting operational requirements. There is a great demand for manufacturing technologies that can fabricate net-shape components incorporating the FGM design concepts. The focus of this paper...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 705-709, March 4–6, 2002,
... polyimide and WC-Co content have been successfully deposited, showing that it is possible to produce graded composite coatings consisting of pure polymer at the substrate and pure WC-Co on the surface. Paper includes a German-language abstract. functionally graded materials high velocity oxyfuel...
Proceedings Papers

ITSC2012, Thermal Spray 2012: Proceedings from the International Thermal Spray Conference, 776-781, May 21–24, 2012,
... Abstract Functionally graded coatings exhibit outstanding thermomechanical performances that meet economic demands. By influencing the microstructural formation of the layers of the coated tool, the distribution and transfer of heat from the impact zone into the forming process is determined...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1657-1662, May 25–29, 1998,
... Coddet, editor, p 1657-1662 www.asminternational.org DOI: 10.31399/asm.cp.itsc1998p1657 Proceedings of the 15th International Thermal Spray Conference, 25-29 l\/lay 1998, Nice, France PROPERTIES OF FUNCTIONALLY GRADED ZIRCONIA COATING BY GAS TUNNEL TYPE PLASMA SPRAYING KOBAYASHI A. Osaka University...
Proceedings Papers

ITSC 2018, Thermal Spray 2018: Proceedings from the International Thermal Spray Conference, 35-41, May 7–10, 2018,
... Abstract In this study, two types of thermal barrier coatings (TBC); duplex and functionally graded coatings were deposited on superalloy Nimonic 263 substrates using air plasma spray process. The duplex coating consists of YSZ top coat and NiCrAlY bond coat. The functionally graded coating...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 498-503, May 10–12, 2004,
... Abstract The use of polymer matrix composites [PMC's] in the gas flow path of advanced turbine engines offers significant benefits for aircraft engine performance, but their useful lifetime is limited by their poor erosion resistance. HVOF and flame sprayed polymer/cermet functionally graded...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 613-618, May 3–5, 2010,
... Abstract Functionally graded coatings (FGC), in which the composition and properties vary gradually from the bond layer to the top layer, are introduced in this study. Using a mixing nozzle, a graded coating was generated employing twin wire spraying (TWAS) process. The deposition started...
Proceedings Papers

ITSC 2001, Thermal Spray 2001: Proceedings from the International Thermal Spray Conference, 943-950, May 28–30, 2001,
... Abstract Thermal barrier coating (TBC) structures composed of Al 2 O 3 and ZrO 2 with different chemical compositions on the NiCoCrAlY bondcoat are proposed to improve the oxidation resistance of TBC systems. The concept of functionally graded materials (FGM) was applied to manage residual...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 329-334, May 14–16, 2007,
... Abstract Atmosphere plasma spray and robot digital fabricating were integrated and presented to prepare the planar PEN and MOLB-type PEN SOFCs. On the basis of the spraying conditions optimized previously and the self-developed functionally graded powder feed system, two kinds of PEN cells were...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 777-781, March 4–6, 2002,
... Abstract This paper presents the results of long-term thermal cycling tests on plasma-sprayed thermal barrier coatings, including coating samples produced with functionally graded materials. The role of oxidation is also considered based on the results of elemental analysis. The authors explain...
Proceedings Papers

ITSC 2018, Thermal Spray 2018: Proceedings from the International Thermal Spray Conference, 825-829, May 7–10, 2018,
... Abstract Functionally graded thermal barrier coatings (FG-TBCs) with a gradual composition change from the MCrAlY bond coat (BC) layer to the yttria stabilized zirconia (YSZ) TBC layer is one way to decrease the residual stresses at the BC/TBC interface during a thermal cycling process. At high...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 1667-1673, May 5–8, 2003,
... functionally graded (FGM) coatings are being investigated as a method to address this technology gap by providing erosion and oxidation protection to polymer matrix composites. The FGM coating structures are based on a polyimide matrix filled with varying volume fractions of WC-Co. The graded coating...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 730-735, May 3–5, 2010,
... reserved Mechanical Behaviour of Air-plasma Sprayed Functionally Graded YSZ-Mullite Environmental Barrier Coatings: A Study via Instrumented Indentation C. V. Cojocaru, Y. Wang, R. S. Lima, Boucherville/CND, C. Moreau, Montreal/CND, J. Mesquita-Guimarães, E. Garcia, P. Miranzo and M. I. Osendi, Madrid/E...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1259-1263, May 25–29, 1998,
... Abstract The aim of this study is to produce free-standing functionally-graded structures in which density varies continuously from 2.2 to 17.3 g/cm3 through a total thickness of 4.5 mm. In order to optimize material performance, it is necessary to account for the different combinations...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 259-266, September 15–18, 1997,
... Abstract Pre-alloyed, plasma spheroidized powders were used as feedstock in the plasma spraying of functionally graded ZrO 2 /NiCrAlY coatings. The advantage of using pre-alloyed powders was to ensure chemical homogeneity and promote uniform density along the graded layers, and these pre...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 518-522, May 14–16, 2007,
... Abstract A functionally graded thermal barrier coating (FG-TBC) of CeO 2 -Y 2 O 3 -ZrO 2 /NiCoCrAlY was prepared using a recently developed supersonic plasma spray (S-PS) system. The system had dual powder feed ports through which the metal alloy powders were fed into the lower temperature...