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degradation

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Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 517-522, May 25–29, 1998,
... International Thermal Spray Conference All rights reserved. Christian Coddet, editor, p 517-522 www.asminternational.org DOI: 10.31399/asm.cp.itsc1998p0517 Proceedings of the 15th International Thermal SprayConference, 25 -29 May 1998, Nice, France DEGRADATION OF IN-FLIGHT PMMA PARTICLES DURING THERMAL SPRAYING...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 295-299, March 4–6, 2002,
... drying and the resulting layers are characterized by means of SEM, X-ray diffraction, microhardness, and wear testing. Paper includes a German-language abstract. carbide degradation high-velocity oxyfuel spray coating tungsten carbide coatings WC-10Co-4Cr powder Thermal Spray 2002...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 820-825, May 14–16, 2007,
... Abstract Numerical predictions and experimental observations have been correlated to improve the qualitative understanding of the degree of thermal degradation occurring during the HVOF spray deposition of Nylon-11. Particle residence time (<1 ms) in the HVOF jet was insufficient...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 371-374, June 2–4, 2008,
... The degradation behaviour of the coated superalloy was studied in the aggressive environment of 40%Na 2 SO 4 -60%V 2 O 5 at 900°C, using thermogravimetric technique, to understand the protective nature of the coatings under cyclic conditions. The coatings were found to be effective in increasing the resistance...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 1069-1071, June 2–4, 2008,
.... The techniques used to characterize and determine the extent of thermal degradation of the PEEK coatings were valence-band XPS and FTIR-ATR. Valence-band XPS showed that, in general, minimal degradation of the PEEK occurred during the HVAF thermal spraying process. FTIR-ATR results showed that more surface...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 981-986, May 25–29, 1998,
... in the ductility above 800 °C. Thus it is apparent that the oxidation/carbonization and nitridation in the concave coatings produced a significant loss of the ductility. The in-service degradation mechanism of the CoCrAlY coatings is discussed in light of the operating temperature distribution and compared...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 231-237, October 7–11, 1996,
... temperature gradients, which accelerates the degradation of the surface of the particles and the coating layers. However, the analysis indicates that the degradation can be limited by the control of the plasma gas composition, the spraying distance and the torch traverse speed. The theoretical analysis has...
Proceedings Papers

ITSC 2005, Thermal Spray 2005: Proceedings from the International Thermal Spray Conference, 963-968, May 2–4, 2005,
...-Co suffers significant mechanical damage on impact as it is deposited, resulting in carbide fracture and size reduction and thus to the low observed wear resistance. high velocity oxygen fuel spray coating structural degradation tungsten carbide-cobalt coating wear resistance Thermal...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 485-494, May 5–8, 2003,
... a detrimental effect on oxidation resistance of tested carbides. carbide coatings chemical degradation erosion corrosion high velocity oxy-fuel spraying hot corrosion testing oxidation resistance thermal spray coatings Thermal Spray 2003: Proceedings from the International Thermal Spray...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 762-767, May 3–5, 2010,
.... The degradation of the coatings and base material surface was characterized using micro hardness tests, optical and scanning electron microscopy, and also by conventional weight loss measurements. Wear resistance of the coatings was evaluated using modified rubber-wheel abrasion tests. In this work ASTM G48...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 89-96, May 4–7, 2009,
... Abstract This study investigates the degradation of YSZ-CoNiCrAlY thermal barrier coatings (TBCs) due to vanadium and phosphorus pentoxides and calcium-magnesium aluminosilicate (CMAS) sand at temperatures up to 1400 °C. The pentoxides are shown to degrade bond coat and topcoat layers through...
Proceedings Papers

ITSC2023, Thermal Spray 2023: Proceedings from the International Thermal Spray Conference, 408-413, May 22–25, 2023,
... and oscillating wear resistance decrease. This study reveals the great potential of supersaturated solid solutions of ultrafine EHEAs obtained by LMD processing with high cooling rates. Al 0.3 CoCrFeNiMo 0.75 alloys cooling rates degradation eutectic high-entropy alloys laser metal deposition...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 169-173, May 10–12, 2004,
... Abstract TiO 2 coatings were prepared on polybutylene succinate (PBS) plastic by plasma spraying and High Velocity Oxygen Fuel (HVOF) spraying using agglomerated sub-micron TiO 2 powder (200nm). Since PBS is well known material as bio-degradable plastic, the photo-catalytic TiO 2 /bio...
Proceedings Papers

ITSC1999, Thermal Spray 1999: Proceedings from the United Thermal Spray Conference, 846-848, March 17–19, 1999,
... Abstract This paper investigates the degradation of polymers during thermal spraying with special reference to the changes in molar mass. A study is carried out on the degradation of polymethylmethacrylate (PMMA) during plasma spraying. The infrared spectroscopy showed that the coating did...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 660-665, May 14–16, 2007,
... structure and properties suffer from severe decomposition, which subsequently degrade the performance of the coatings produced. The cold spray process appears to be a promising process alternative to preserve the properties of the feedstock powder during the coating preparation. Although, the later...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 971-974, June 2–4, 2008,
... Abstract Thermal spray of polymers has had limited investigation due to the narrow processing windows that are inherent to polymer powders, especially their low temperatures of thermal degradation. The polymer poly aryl ether ether ketone (PEEK) has a high thermal degradation temperature...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 395-403, May 5–8, 2003,
... Abstract Most of the early applications of thermal spray coatings were focused towards providing a remedy to excessive wear degradation. However, as the introduction of such coatings into wider industrial sections increases there is also exposure to other potential degradation processes...
Proceedings Papers

ITSC1999, Thermal Spray 1999: Proceedings from the United Thermal Spray Conference, 325-328, March 17–19, 1999,
... Abstract A reliable measuring tool of surface degradation can therefore result in substantial savings in time and money for the development of machine components, lubricants, wear resistant coatings, surface treatments process, and for the control/optimization of components life time during...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 114-119, May 10–12, 2004,
... Abstract The photocatalytic TiO 2 coatings on bio-degradable plastic(polybutylene succinate:PBS) were prepared by HVOF and plasma spraying techniques using three kinds of agglomerated powders (P200: 200nm, P30: 30nm, P7: 7nm). The microstructures of coatings were characterized with SEM and XRD...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 87-91, May 11–14, 2015,
... Abstract Fiber-reinforced polymer composites (CFRP) are increasingly used in aerospace for weight-sensitive applications. However, they are subjected to degradation from the erosive forces of solid particles and water droplets. This degradation results in a decreased service life of composite...