发电锅炉材料与防护涂层的磨蚀机制与研究展望
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张世宏, 胡凯, 刘侠, 杨阳
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Corrosion-Erosion Mechanism and Research Prospect of Bare Materials and Protective Coatings for Power Generation Boiler
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ZHANG Shihong, HU Kai, LIU Xia, YANG Yang
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表8 不同热喷涂涂层冲蚀磨损率比较[146~153]
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Table 8 Comparison of erosion wear rates for different thermal spray coatings[146-153]
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Coating | Substrate | Coating | Test | Cycle | Erodent | Impact | Thickness loss (mm) / |
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time | angle | Volume loss (mm3) / |
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| | preparation | temperature | material | min | (o) | Weight loss (mg) / | | | process | oC | | | | Erosion wear rate | | | | | | | | Coating | Substrate | | | | | | NiCrBSi-Al2O3[146] | 304 s.s. | PS | 450 | 10 | Al2O3 | 30 | 3.4 × 10-5 | 8.5 × 10-5 | Cr2C3-NiCr | Carbon steel | HVAF | Room | 10 | Al2O3 | 30 | 0.69 mm3 | - | Cr2C3-FeCr | | | temperature | | | | 0.68 mm3 | - | Cr2C3-WC-MA[147] | | | | | | | 0.52 mm3 | - | NiCrAlY[148] | Superni 75 | PS | 540 | 60000 | Actual coal | - | 0.46 mm 0.46 mm 0.40 mm 0.49 mm | - | | Superni 600 | | | | fired boiler | - | - | | Superni 718 | | | | | - | - | | Superfer 800 | | | | | - | - | Cr2C3-25NiCr | 304 s.s. | HVOF | 400 | 60 | Al2O3 | 30 | 39 mg | - | WC-10Co4Cr[149] | | | | | | | 51 mg | | WC-Co | T12 | D-gun | 400 | 5 | Al2O3 | 30 | 2.5 × 10-5 | 5.0 × 10-5 | Stellite 6 | | | | | | | 2.5 × 10-5 | | Stellite 21[150] | | | | | | | 2.4 × 10-5 | | Ni-20Cr | SA 516 | Cold spray | 700 | 90000 | Actual coal | - | 0.21 mm | 0.50 mm | Ni-20Cr-TiC | | | | | fired boiler | | 0.12 mm | | Ni-20Cr-TiC-Re[151] | | | | | | | 0.11 mm | | Ni-20Cr | T22 | Arc spray | 750 | 90000 | Actual coal | - | 0.06 mm | 0.51 mm | Ni-5Al[152] | | | | | fired boiler | | 0.16 mm | | Al2O3-3TiO2[153] | T11 | D-gun | 700 | 90000 | Actual coal | - | 0.25 mm | 2.08 mm | | T22 | | | | fired boiler | | 0.23 mm | 1.71 mm |
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