Author Affiliations
1Shanghai Aerospace Equipment Manufacturer, Shanghai 200245, China2University of Shanghai for Science and Technology, Shanghai 200093, Chinashow less
Fig. 1. Laser cladding deposition equipment
Fig. 2. Macroscopic appearances of tin-based Babbitt metal. (a) Laser cladding deposition process; (b) tin-based Babbitt metal obtained by laser cladding deposition; (c) tin-based Babbitt metal obtained by static casting; (d) tin-based Babbitt metal obtained by centrifugal casting
Fig. 3. Microstructures of three kinds of tin-based Babbitt metals imaged by optical microscope. (a) Tin-based Babbitt metal obtained by laser cladding deposition; (b) tin-based Babbitt metal obtained by static casting; (c) tin-based Babbitt metal obtained by centrifugal casting
Fig. 4. Size of β-phase in three kinds of tin-based Babbitt metals and statistical mean size. (a) Tin-based Babbitt metal obtained by laser cladding deposition; (b) tin-based Babbitt metal obtained by static casting; (c) tin-based Babbitt metal obtained by centrifugal casting; (d) mean diameter
Fig. 5. Microstructures of three kinds of tin-based Babbitt metals about 7 mm from the interface. (a) Tin-based Babbitt metal obtained by laser cladding deposition; (b) tin-based Babbitt metal obtained by static casting; (c) tin-based Babbitt metal obtained by centrifugal casting
Fig. 6. SEM microstructures and element distribution of three kinds tin-based Babbitt metals. (a) SEM microstructure of laser cladded tin-based Babbitt metal/steel interface; (b) elements map scanning of laser cladded tin-based Babbitt metal/steel interface; (c) SEM microstructure of statically cast tin-based Babbitt metal/steel interface; (d) element line scanning of statically cast tin-based Babbitt metal/steel interface; (e) SEM microstructure of centrifugally cast tin-based Babbitt metal/steel inter
Fig. 7. Indentation and mean micro-hardness of three kinds of tin-based Babbitt metal and SnSb in centrifugally cast tin-based Babbitt metal. (a) Laser cladded tin-based Babbitt metal; (b) statically cast tin-based Babbitt metal; (c) centrifugally cast tin-based Babbitt metal; (d) SnSb; (e) microhardness mean
Fig. 8. Friction coefficient and wear morphology of three kinds of tin-based Babbitt metals. (a) Friction coefficient; (b) laser cladded tin-based Babbitt metal; (c) statically cast tin-based Babbitt metal; (d) centrifugally cast tin-based Babbitt metal
Fig. 9. Nondestructive inspection of tin-based Babbitt metal. (a) Ultrasonic test; (b) coloring; (c) developing
Element | Sb | Cu | Fe | As | Bi | Al | Sn |
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Mass fraction /% | 11.29 | 6.03 | 0.029 | 0.002 | 0.005 | 0.001 | Bal. |
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Table 1. Chemical composition of tin-based Babbitt metal ZSnSb11Cu6
Layernumber | Laserpower /W | Scanning speed /(mm·min-1) | Spotdiameter /mm | Monolayerheight /mm | Powder feedingrate /(g·min-1) | Overlaprate /% |
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1 | 2000 | 1200 | 3 | 1.13 | 19.97 | 50 | 1+N | 800 | 1200 | 3 | 0.79 | 19.97 | 50 |
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Table 2. Process parameters for LCD of tin-based Babbitt metal