評估316與410不鏽鋼實施不同溫度之電漿氮化處理所得之滲層對耐腐蝕性及耐磨耗性之研究

Assessment of Corrosion and Wear Resistance Behavior on the Coated Layers of 316 and 410 Stainless Steel Fabricated by Different Plasma Nitriding Temperatures

鄭裕涵(Yuh-Han Cheng)

指導教授 ： 陳繁雄

大同大學/工程學院/材料工程學系所/碩士(2005年)

摘要

本研究採沃斯田體系及麻田散體系不銹鋼分別在高溫及低溫進行離子滲氮，其後再進行不同溫度之後氧化處理。評估並比較滲氮層及氧化層之耐腐蝕性、耐磨耗性及其機械性質。
本實驗著重以450℃為分界之滲氮處理溫度，在450℃以下的低溫離子滲氮，採用活性屏蔽的方式進行滲氮，低於450℃的溫度將不會有Cr之析出與N結合成為CrN，而不會造成耐腐蝕性下降，另外氧化處理後所生成之Fe2O3與Fe3O4的氧化物則有助於耐腐蝕性及耐磨耗性之提升。

關鍵字

耐磨耗性 ； 耐腐蝕性 ； 後氧化 ； 離子滲氮 ； 活性屏蔽 ； 氮化鉻

並列摘要

The 316 austenitic stainless steel and 410 martensitic stainless steel have been studied on their corrosion resistance and tribology properties after they were plasma nitrided at high temperature(550℃) and low temperature(420℃). Some of the nitrided specimens were subjected to be oxidized at 350℃ and 500℃ for investigating the effect of post-oxidation treatment on their properties change.
The active screen employed in low temperature nitriding has been proved that it can enhance the hardened layer formation and not to deteriorate the corrosion resistance of the stainless steels, due to the elimination of CrN formation. The post-oxidation treatment also proved that it can effectively improve the corrosion and wear resistance of the coated layers.
In this research, using DC plasma system to proceed high temperature (550℃) plasma nitriding; active screen technique assists DC plasma system to proceed low temperature (420℃) plasma nitriding. Active screen technique can improve the disadvantage of DC plasma nitiriding, such as arcing damage, edging effect and hollow-cathode effect. Proceeding 350℃ and 500℃post-oxidation treatment in the air follow by plasma nitriding treatment.

並列關鍵字

Active screen ； Chromium nitride ； corrosion resistance ； Plasma nitriding ； Post-oxidation ； wear resistance

參考文獻

[2] Karl-Erik Thelning, Steel and its Heat Treatment, 2nd Edition (1984) p.492-534.

[4] C.X. Li, T. Bell, Sliding Wear Properties of Active Screen Plasma Nitrided 316 Austenitic Stainless Steel, Wear 256 (2004) p.1144-1152.

[7] Wang Liang, Surface Modification of AISI 304 Austenitic Stainless Steel by Plasma Nitriding, Applied Surface Science 211 (2003) p.308-314.

[8] C.X. Li and T. Bell, Wear Properties of Active Screen Plasma Nitrided 316 Austenitic Stainless Steel, Wear 256 (2004) p.1144-1152.

[10] C.X. Li and T. Bell, Principles, Mechanisms and Applications of Active Screen Plasma Nitriding, Heat Treatment of Metals (2003) p.1-7.