[論文] 炭素鋼의 機械的 性質을 改善하기 爲한 이온室化 處理의 應用에 關한 硏究

다국어 초록 (Multilingual Abstract)

This thesis is to improve the mechanical properties of carbon steel by the ion-nitriding, and post-heat treatment.<br/>
The structures of ion-nitrided SM45C steel were changed to martensite by quenching from 730℃ and 8OO℃.<br/>
And then a few of the quenched specimens was tempered at 200℃ for 120 min.<br/>
The emphasis in this study is focussed on Comparison of hardness and fatigue strength with the ion-nitrided steel.<br/>
The results obtained are summerized as follows.<br/>
1. To improve the hardness and fatigue strength of ion-nitrided steels, it is effective to under.<br/>
take diffusion treatment for a short time at the austenite temperature (8OO℃).<br/>
2. If ion-nitrided steel is heated for a long time at high temperature, de-nitriding occure. <br/>
3. The quenching treatment after nitriding on the carbon steel is necessary to improve the mechanical properties of the steels.

목차 (Table of Contents)

• ABSTRACT
  
• 1.緖論
  
• 2.實驗方法
  
• 3.實驗結果 및 考察
  
• 4.結論
  
• 參考文獻