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防蝕工程 EIScopus

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篇名 焊接304型不鏡鋼在3.5%NaC1 溶液中之腐蝕行為
卷期 14:1
並列篇名 Corrosion behaviors of welded AISI 304 stainless steels in 3.5%N aCI solution
作者 簡志宏蔡育佑黃燕飛薛文景
頁次 037-043
關鍵字 敏化交流阻抗極化銲接入熱玩斯田鐵SensitizationACimpedancePolarizationGTAW Heat FlowAustenitic Stainless SteelEI
出刊日期 200003

中文摘要

汶斯回鐵型不錯鋼粒間腐蝕的敏化溫度約在450°C至850°C之間,而不錯鋼在捍接過程中正在此溫度範圍間,為要瞭解捍接製程中,減少捍接入熱與捍道急冷這兩項因素在減少碳化物析出的妓果,本文以ASTMA262-93a規範、配合直流極化掃描及交流阻抗法來評估改善不錯鋼捍接製程之可能性。實驗即由觀察捍道、 熱影響區、及母材區之顯微組織圖中比較各區域之腐蝕電位、電流密度及交流總阻抗值進而發現捍接入熱量的減少與捍道急冷方式,對於改善捍道退化有著顯著的助益,本就結果顯示汶斯田鐵型不錯鋼焊接時對入熱量控制的程序有其顯著的必要性。

英文摘要

The sensitization temperatures of austenitic stainless steel arc bctween 450 and 850°C. However, it is inevitable that the Gas Tungsten Arc Welding (GTAW) process has to be heated or cooled in is range. The ASTM A262-93a cosion practice and effects of heat flow input and weld quench procedure on the sensitization are then studied. Corrosion behaviors are observed and shown from potentiodynamic polarization and AC impedance measurements. Minimized the input of heat flow seems to be the most effective for its corrosion resistance. The employed sensitization measurements and studying results suggest that heat-generation control will be crucial for AlSl 304 stainless steel in GTAW welding.

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