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7 不同金属陶瓷热腐蚀速率比较[132~138]
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Table 7 Comparison of hot corrosion rates for different metallic-ceramic coatings[132-138]
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| Coating | Substrate | Coating | Corrosion | Cycle | Molten salt | Hot corrosion |
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| time | rate / (mg·cm-2) |
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| | preparation | temperature | composition | | | process | oC | h | (mass fraction) | Coating | Substrate | | Cr3C2-25NiCr | Superni 600 | D-gun | 900 | 100 | Na2SO4-25%NaCl | 5.0 | - | | Cr3C2-25NiCr-0.4%CeO2[132] | | | | | | 7.0 | | | Cr3C2-NiCr-Zr[133] | Superni 600 | D-gun | 900 | 100 | 40%Na2SO4- | 7.0 | - | | Superni 718 | | | | 10%NaCl-40%K2SO4- | 3.5 | | | Superco 605 | | | | 10%KCl | 11.7 | | | Cr3C2-25NiCr/WC-Co[134] | T22 | HVOF | 700 | 50 | Na2SO4-82%Fe2(SO4)3 | 8.8 | 77.8 | | Ni-20Cr-TiC | T22 | Cold spray | 900 | 50 | Na2SO4-60%V2O5 | 40 | 220 | | Ni-20Cr-TiC-Re[135] | | | | | | 20 | | | FeCrNiAlMnB-Cr3C2 [136] | AISI 1020 | Arc spray | 750 | 100 | Na2SO4 + 25%K2SO4 | 3.5 | 127.1 | | | | | | Na2SO4 + 25%NaCl | 11.1 | 130.1 | | Cr3C2-NiCr[137] | T91 | HVOF + | 900 | 50 | Na2SO4-60%V2O5 | 236 | - | | | sealing + heat | | | | 25 | | | | treatment | | | | 68 | | | NiCrBSi-TiB2[138] | Carbon steel | HVOF | 800 | 200 | Na2SO4-60%V2O5 | 7 | - |
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