发电锅炉材料与防护涂层的磨蚀机制与研究展望

张世宏, 胡凯, 刘侠, 杨阳

Corrosion-Erosion Mechanism and Research Prospect of Bare Materials and Protective Coatings for Power Generation Boiler

ZHANG Shihong, HU Kai, LIU Xia, YANG Yang

表2 常见锅炉用钢主要合金元素含量及作用[62,96~100] (mass fraction / %)

Table 2 Main alloy element chemical compositions and functions of steels for boiler[62,96-100]

Steel C Cr Mo V Nb Ni Other 20G[96] 0.17-0.24 - - - - - - 12CrMoVG[96] 0.08-0.15 0.90-1.20 0.25-0.35 0.15-0.30 - - - T11[98] 0.05-0.15 1.00-1.50 0.44-0.65 - - - - T23[98] 0.04-0.10 1.90-2.60 0.05-0.30 0.20-0.30 0.02-0.08 - W (1.45-1.75) Improve red-hardness and heat resistance T24[62] 0.05-0.10 2.20-2.60 0.90-1.10 - - Ti (0.05-0.10) Refine the grain and reduce cold shortness T91[98] 0.08-0.12 8.00-9.50 0.85-1.05 0.18-0.25 0.06-0.10 - - T92[97] 0.07-0.13 8.50-9.50 0.30-0.60 0.15-0.25 0.04-0.09 - W (1.50-2.00) TP304[99] ≤ 0.08 18.00-20.00 - - - 8.00-11.00 - TP347[99] ≤ 0.10 17.00-19.00 - - 0.80-1.50 9.00-13.00 - Super304H[97] 0.07-0.13 17.00-19.00 - - 0.30-0.60 7.50-10.50 Cu (2.50-3.50) Improve strength and toughness and corrosion resistance HR3C[100] ≤ 0.10 24.00-26.00 - - 0.20-0.60 19.00-22.00 -