410麻田散鐵系不銹鋼的表面改質處理

The Surface Modification Treatment of 410 Stainless Steel

陳永傳(Y. C. Chen) ； 白鈞文(C. W. Pai)

《材料科學與工程》 34卷1期 (2002/03) Pp. 37-48

https://doi.org/10.6409/JMSE.200203.0037

摘要

為了使410麻田散鐵系不銹鋼能夠兼具高硬度、耐磨耗以及耐腐蝕的表面特性，以適用於自攻螺絲，本研究嘗試以氣體滲碳、流體床滲鉻以及鈍化處理來進行410不銹鋼的表面改質處理，探討各種參數：如滲碳溫度、滲碳碳勢、滲碳時間、滲鉻溫度、滲鉻時間、鈍化溫度、鈍化時間等對410不銹鋼之硬度及耐蝕性的影響。所得結果如下：410不銹鋼在進行氣體滲碳處理時，表層硬度會隨著滲碳溫度、滲碳時間、滲碳碳勢的增加而提昇，但耐蝕性則會降低。410不銹鋼在經過氣體滲碳處理後，若再施以900℃、1小時的流體床滲鉻處理，可以有效地提昇410不銹鋼的耐蝕性，而且仍能維持相當高的表層硬度(Hv650)。410不銹鋼在鈍化處理時，隨著熱鈍化溫度、熱鈍化時間的增加，其耐蝕性會提昇，但表層硬度則會下降。經過滲碳處理及1000℃、0.25小時流體床滲鉻處理的410不銹鋼，若再施以200~250℃、1小時的熱鈍化處理，可以有效地提昇410不銹鋼的耐蝕性，而且仍能維持相當高的表層硬度(HV600~620)。

關鍵字

410不銹鋼 ； 表面改質 ； 滲碳 ； 流體床滲鉻 ； 熱鈍化 ； 耐蝕性

並列摘要

In order to increase the hardness, wear resistance, and corrosion resistance of 410 stainless steel, steel samples were treated by carburization, fluidized-bed chromization, and thermal passivation treatments in the present work. The influences of process conditions including carburization temperature, carburization processing time, carburization carbon potential, chromization temperature, chromization processing time, passivation temperature, and passivation processing time on the surface properties of 410 stainless steel were studied. The hardness distribution, the weight change that represents the corrosion resistance, the polarization phenomena, and the microstructure of steel samples were examined after treatments. The results were summarized as follows: Increasing the temperature, processing time, and carbon potential of the carburization process will increase the hardness, but decrease the corrosion resistance of 410 stainless steel. The corrosion resistance of a carburization treated 410 stainless steel can be increased effectively by a fluidized-bed chromization treatment of treating condition 900℃, 1hr. The hardness of specimen can be maintained at a surface hardness of Hv650 after treatment. The 410 stainless steel will possess high hardness (Hv600~620) and excellent corrosion resistance by a low temperature-long processing time (200~250℃, 1hr) thermal passivation treatment following the treatments of carburization and fluidized-bed chromization of treating condition 1000℃ for 0.25hr.

並列關鍵字

410 stainless steel ； Surface modification ； Carburization ； Fluidized-bed chromization ； Thermal passivation ； Corrosion resistance