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(formation morphology AND cooling rate)

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ITSC 2001, Thermal Spray 2001: Proceedings from the International Thermal Spray Conference, 829-834, May 28–30, 2001,
... Abstract Fundamental aspects of a plasma sprayed cast iron coating on an aluminum alloy substrate are investigated in the present study: focusing on the effects of preheat substrate temperature (T S ) and chamber pressure (P C ) on the splat morphology, the adhesive strength of splats...
Proceedings Papers

ITSC 2004, Thermal Spray 2004: Proceedings from the International Thermal Spray Conference, 1004-1007, May 10–12, 2004,
... Abstract It has been said that plasma-sprayed ceramics particles are often supercooled before the impact on substrate. Some numerical models of the droplet impact actually included the supercooling effects. However, there is no report that has experimentally confirmed the effects on splat...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 467-472, May 25–29, 1998,
... Abstract A study was performed to examine the effects of starting powder composition, substrate thermal conductivity, and substrate temperature on the composition and structure of individual Al-Cu-Fe splats formed during thermal spraying. The fraction of quasicrystalline phase which formed...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 207-212, May 14–16, 2007,
... Abstract Splats formed during a thermal spray process may be either highly fragmented or intact and disk-like. To predict this change in splat morphology, a dimensionless solidification parameter (Θ), which takes into account factors such as the substrate temperature, splat and substrate...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 956-962, June 7–9, 2017,
... Abstract Ni20Cr splats were sprayed onto polished substrates at different preheating temperatures in an argon atmosphere by Low Pressure Plasma Spray to reveal the dominating factor on the effective interface bonding formation. The splat morphology, microstructure and splat-substrate interface...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 560-565, June 7–9, 2017,
... Abstract Disk splats are usually observed when the deposition temperature exceeds the transition temperature, whereas thick oxide layer will reduce the adhesion resulting from high deposition temperature. In present study, single molybdenum splats were sprayed onto polished molybdenum...
Proceedings Papers

ITSC 2005, Thermal Spray 2005: Proceedings from the International Thermal Spray Conference, 311-319, May 2–4, 2005,
... Abstract Copper splats are deposited on the flat stainless steel surface at the ambient and preheated conditions. The splashing occurs as the splats are deposited at an ambient atmosphere. The characteristics of the splashing occurring at different splat regions during spreading of the droplet...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1369-1374, May 25–29, 1998,
... Abstract This paper presents the results of a study of the morphology of alumina splats deposited on stainless steel and alumina substrates. The substrates were either plasma sprayed or coated via plasma enhanced CVD. Substrates that were plasma sprayed were annealed if necessary to get...
Proceedings Papers

ITSC 2006, Thermal Spray 2006: Proceedings from the International Thermal Spray Conference, 993-998, May 15–18, 2006,
... Abstract Many properties (thermal, electrical, mechanical) of thermal sprayed coatings are strongly linked to the real contacts between the “piled-up” splats. The quality of this contact depends on droplet parameters at impact (size, temperature, velocity) and substrate parameters (temperature...
Proceedings Papers

ITSC 2003, Thermal Spray 2003: Proceedings from the International Thermal Spray Conference, 875-882, May 5–8, 2003,
... impacts on a preheated flat substrate. In this study, the splatting behavior in plasma spray is examined using molten spray droplets of different Reynolds number. Splats are deposited on preheated flat stainless steel surface. The morphology of splats is examined using optical microscopy and scanning...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 601-606, May 3–5, 2010,
... differ both in the temperature and velocity with which the molten particles impact the substrate, leading to different coating characteristics. This includes differences in splat morphology and the nature of microstructural interactions at the splat-substrate interface. That is, features such as local...
Proceedings Papers

ITSC2016, Thermal Spray 2016: Proceedings from the International Thermal Spray Conference, 1138-1144, May 10–12, 2016,
... Abstract In this study, stainless steel splats were deposited on preheated stainless steel substrates with oxide scales of different thickness in inert low-pressure plasma spay (LPPS) conditions to examine the effect of in-situ oxidation of prior splats on the morphology and bonding...
Proceedings Papers

ITSC 2006, Thermal Spray 2006: Proceedings from the International Thermal Spray Conference, 877-882, May 15–18, 2006,
... to detaching of fluid from contact with the substrate. Consequently, splashing occurs during droplet spreading process. In the present study, Mo splats were formed on stainless steel substrate under different plasma spraying conditions. For comparison, Mo splats were also deposited on Mo surface. The substrate...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 685-689, September 27–29, 2011,
... Abstract Polypropylene (PP) was flame sprayed onto rough mild steel substrates at room temperature (RT) that was preheated at 70 °C, 120 °C, and 170 °C. Single solidified droplets (splats) were collected and analysed to understand how processing variables influenced the thermal spray coating...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 91-97, September 27–29, 2011,
... Abstract Aiming at clarifying the individual splat formation mechanism in thermal spray process, commercially available metallic powders were thermally sprayed onto AISI304 substrate surface. The splats changed from a distorted shape with splash to a disk-shaped splat in flattening after...
Proceedings Papers

ITSC2012, Thermal Spray 2012: Proceedings from the International Thermal Spray Conference, 646-650, May 21–24, 2012,
... Abstract Dry-ice blasting, as an environmental-friendly method, was used to pretreat the substrate to be coated. In the present paper plasma-sprayed CoNiCrAlY splats were examined on the dry-ice blasted substrate. The cleaning effect of dry-ice blasting was demonstrated accompanying...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 813-818, June 2–4, 2008,
.... To understand the coating formation mechanism, two approaches were attempted, that is, observation of the single splat formation and the following coating formation as the integration of splats. In the former case, the deformation and cooling processes of YSZ droplets impinging on substrates were captured...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 623-628, October 7–11, 1996,
..., was used to correlate the characteristic parameters of splats to those of the substrate and to the size, velocity and temperature of the impacting particles. phase doppler particle analyzer plasma spraying pyrometer solidification temperature velocity zirconia Thermal Spray: Practical...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 629-636, October 7–11, 1996,
... dynamics and microstructure development. In this paper, the microstructure development during plasma spraying of zirconia is investigated from the point of view of deposition parameters and splat formation (part I). Splats and deposits have been produced at Limoges and Stony Brook under controlled...
Proceedings Papers

ITSC 2009, Thermal Spray 2009: Proceedings from the International Thermal Spray Conference, 861-865, May 4–7, 2009,
... Abstract This work investigates the effect of atmospheric plasma spraying (APS) parameters on in-flight particle properties, splat morphology, and coating microstructure for conventional and nano-size YSZ powders. Particle temperature and velocity were measured using a dual-slit velocimeter...