3-D profilometries of vacuum plasma sprayed nickel-based alloy splats using scanning mechanical microscopy

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:377772

Montavon, G; Coddet, C ^[1]

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1. LERMPS, Belfort (France)

The relationships between processing parameters and deposit microstructures are not well understood due to the numerous parameters managing the thermal spray process and to the random deposition mode of the material. These interactions are directly related to the impact and spreading of the material droplets onto the substrate or previously deposited layers. Thicknesses of splats of a vacuum plasma sprayed (VPS) nickel based alloy (e.g., Astroloy) were determined by experimental measurements using a Scanning Mechanical Microscope (SMM). 3-D profiles of splats sprayed with different processing parameters were collected and showed that splats produced with a 90{degree} spray angle exhibit a near constant thickness along a random cross-section, while splats produced with an off-normal spray angle exhibit a thickness evolution following the impact direction. In the case of a normal spray angle, the splat thickness is a function of (1) the initial particle diameters; (2) the spray parameter set.

• OSTI ID: 377772
• Report Number(s): CONF-9509182--; ISBN 0-87170-541-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ARGON
ASTROLOY
COPPER
EXPERIMENTAL DATA
HYDROGEN
INCIDENCE ANGLE
MICROSTRUCTURE
MORPHOLOGY
PLASMA ARC SPRAYING
POWDERS
SCANNING ELECTRON MICROSCOPY
SCANNING MEASURING PROJECTORS
SHAPE
SIZE
SUBSTRATES
VELOCITY