本研究探討表面鍍鉗鋁(含純甜、Mo-20及-32at.%AI)、鋁矽(AI-7wt.% Si)合金鍍 層及預氧化處理鋁矽鍍層之AISI310耐熱鋼，於硫分壓10-1大氣壓，溫度700-9000C下的高溫硫化行為。鋁鋁及鋁矽鍍層分別是以射頻磁控灘鍍法及熱浸鍍法鍍上。實驗結果顯示，鉗鋁及鋁矽合金飯層皆可降低310耐熱鋼的硫化腐蝕速率。所有含鍍層之耐熱鋼的腐蝕動力學皆遵守拋物線型定律，且腐蝕速率常數隨著溫度土升而增快。含$目鋁鍍層耐熱鋼的表面，腐蝕後生成三層硫化層，其中，外層主要是硫化鐵(FeSlFel_xS)、硫化鎔(Cr2S3/Cr3S4)、及少量的硫化鐵鎳(Fe，Ni)9Sg;肉層為硫化鐵、硫化銘、硫化組(MoS2)·及少量的硫化鋁(AI2S3)、硫化鐵鉗(FeL25Mo6S7ρ和硫化鋁鉗(Al0.55Mo2S4)。含鋁矽鍍層耐熱鋼的表面，腐蝕產物主要為硫化鋁(AI2S3).及少量的硫化鐵(FeSlFel_xS)、硫化鋁(Cr2SiCr3S4)、硫化鐵鎳(Fe，Ni)9Sg。經預氧化處理含鋁矽鍍層之不鏽鋼，腐蝕後生成不同的氧化及硫化物;其中，氧化生成物為氧化鋁(AI203)、氧化矽(Si02)及氧化鋁矽(AI2SiOs).硫化物則為硫化鋁及微量的硫化鐵、硫化銘和硫化鐵鎳。

High-temperature sulfidation of AISI 310 heat-resistant steel coated with Mo-AI ( containing pure Mo， Mo-20， or Mo-32at. % AI) and Al﹒7wt%Si ( without or with preoxidation treatment ) film was studied over the temperature range of 700 - 900"C at lO-latm.sulfur vapor. The Mo-AI and AI-Si coating was prepared by the R. F. magnetron sputter deposition and hot -dipping， respectively. Thecorrosion kinetics followed the parabolic rate law， and the sulfidation rate constants increased with increasing temperature in all cases. The scales formed on 310 heat-resistant steel coated with Mo-AI coating layer were duplex， consisting of an outer layer of mostly iron sulfide (FeSlFel_xS)， Cr2S3/Cr3S4 and minor (Fe，Ni)9Sg and an inner complex scale of FeS/Fel_xS， Cr2S3/Cr3S4. MoS2， and minor amounts of AlzS3， Fe1.25Mo6S7.7. and Alo.55Mo2S4' The scales formed on 310 heat-resistant steel coated with AI-Si coating layer were mostly consisted of aluminum sulfide (AI2S3)， and minor amounts of FeSIFel_xS， Cr2S3/ Cr3S4， and (Fe，Ni)9Sg， while the scales formed on 310 heat-resistant steel coated with AI-Si coating with preoxidation treatment consisted of A1203， Si02， AI2SiOs， A12S3 and minor amounts of FeSIFel_xS， Cr2S3/Cr3缸， and (Fe，Ni)9Sg.