2023
DOI: 10.3390/met13121966
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Different Primary Gas Flow Rates in Determining the Flattening Behavior of In-Flight Particles in Plasma-Sprayed NiCrBSi Coatings and the Resultant Microstructure and Hardness

Hao-Nan Xuan,
Nan Li,
Jun Zhang
et al.

Abstract: The flattening behavior of in-flight particles during plasma spraying is a highly intricate process affected by numerous factors. Therefore, in this work, in-flight particles (spherical NiCrBSi powder) were collected with the water quenching process, and the morphology and composition differences between the original powder particles and the melted in-flight particles were observed using scanning electron microscopy (SEM). The particle size in various states was recorded and calculated. The internal structure … Show more

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Cited by 3 publications
(2 citation statements)
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“…In contrast, there are no molten pools during spraying AM. The feedstock is melted or semi-melted at the nozzle of the spraying AM equipment, and the resultant melted or semi-melted in-flight particles are sprayed onto the substrate following a pre-designed route [122]. Consequently, the designed deposition of in-flight particles cannot be guaranteed.…”
Section: Spraying Technologymentioning
confidence: 99%
See 1 more Smart Citation
“…In contrast, there are no molten pools during spraying AM. The feedstock is melted or semi-melted at the nozzle of the spraying AM equipment, and the resultant melted or semi-melted in-flight particles are sprayed onto the substrate following a pre-designed route [122]. Consequently, the designed deposition of in-flight particles cannot be guaranteed.…”
Section: Spraying Technologymentioning
confidence: 99%
“…Porosity, a common feature and disadvantage in all AMproduced parts, originates from inadequate melting and entrapment of gases within the melt pools in PBF, DED, and spraying technologies and the stacking of particles in BJ and spraying technologies [90,122,135]. The instabilities in melt pool fluid flow can result in inadequate melting and gas entrapment, which can be mitigated by optimizing the processing parameters of the AM processes [391].…”
Section: Challenges In the Am Processesmentioning
confidence: 99%