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| Abstract No.: |
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Scheduled at:
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Thursday, September 29, 2011, Saal B2.2 9:00 AM
HVOF & Flame Spraying 2
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| Title: |
Deposition of surface-melted YSZ particles by flame spraying
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| Authors: |
Chang-Jiu Li* / Xi'an Jiaotong University, P.R. China
Xiao-Ming Wang/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China
Cheng-Xin Li/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China
Guan-Jun Yang/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, China
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| Abstract: |
With thermal spray, it is generally accepted that spray particles at much limited melting state are difficult to be deposited. In the present study, flame spraying was employed to generate yttria-stabilized zirconia (YSZ) particles at a limited melting. The melting degree of YSZ particles was controlled by flame combustion intensity and fly distance of spray particles with gas flame. The velocity of spray particles was quantitatively measured. The effects of spray distance and acetylene flow rate on the particle velocity and deposition behavior were examined. The surface morphology of deposited particles was characterized by SEM, and the surface area of YSZ particles was characterized by 3D laser scanning microscope. The bonding between deposited YSZ particles and YSZ substrate was examined from cross section. The deposition experiment revealed that the YSZ particles with only surface layer melted can be successfully deposited on YSZ substrate through controlling substrate temperature.
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