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研究生:陳英家
研究生(外文):CHEN,YING-CHIA
論文名稱:灰口鑄鐵鋁化塗層研究
論文名稱(外文):Study on Aluminization Coating of Gray Cast Iron
指導教授:葉松瑋葉松瑋引用關係
指導教授(外文):YEH,SONG-WEI
口試委員:毛世威林俊宏葉松瑋
口試委員(外文): YEH,SONG-WEI
口試日期:2017-07-20
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:模具系碩士在職專班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:48
中文關鍵詞:包覆擴散灰口鑄鐵片狀石墨鑄鐵
外文關鍵詞:Pack CementationGray Cast IronSEM
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本研究的目的係以灰口鑄鐵(片狀石墨鑄鐵)為基材實施包覆擴散(pack cementation)過程,鋁化灰口鑄鐵,並進行氧化動力學試驗。觀察鍍層微結構的變化與鋁化層形成機制,並探討鋁化後之灰口鑄鐵於常壓高溫環境中,是否能夠阻絕或減緩降低氧化的發生,實驗以X-ray、SEM、EDX等工具觀察其成分分佈與結構分析。

由灰口鑄鐵氧化動力學試驗重量變化圖顯示得知,氧化膜的厚度隨著時間而成線性增加,為阻絕或減緩降低氧化的發生,故將鑄鐵包埋置比例為30wt%、3wt%及67wt%之鋁粉、氯化銨(催化劑)及氧化鋁混和粉末中,並配合氬氣保護,以900℃之溫度擴散燒結5小時,進行鑄鐵表層鋁化處理,鋁化處理後之鑄鐵再進行多組氧化動力學試驗,相互比較其氧化物生成之重量變化,藉以了解鋁化灰口鑄鐵在各種工作溫度下之抗氧化能力。
The goal of the research is to conduct the pack cementation with the backing material of gray cast iron (flake graphite cast iron) which are aluminizing gray cast iron and conducting the experiment of oxidation kinetics. To observe the change of microstructure of coating, and to discuss if the gray cast iron is able to stop or slow the oxidation process after aluminizing in the condition of high temperature and standard atmosphereic pressure, the research observes the positions of the component of the compound and analyzes the structure by the tools of X-ray, SEM, and EDX.

The chart showing the weigh changing of the gray cast iron in the oxidation kinetics experiment indicates that the thickness of the oxide film increases linearly over time. In order to stop or slow the oxidation process, the research compounded the 30wt%, 3wt% and 67wt% of the powdered aluminium, ammonium chloride as catalyst, and aluminium oxide for embedding gray cast iron, and in Argon, conduct sintering in 900℃ for 5 hours for aluminizing the surface of gray cast iron. The aluminizing gray cast iron goes through many experiments of oxidation kinetics, and the research compares the weight changing with the generation of oxidation in order to understand the antioxidation capability of aluminizing gray cast iron in any kind of temperature.
摘要 i
Abstract ii
誌謝 iii
目錄 iv
表目錄 vi
圖目錄 vii
符號說明 ix
一、緒論 1
1.1前言 1
1.2研究動機與目的 2
1.3文獻回顧 3
1.4研究方法 5
1.5論文架構 6
二、基礎理論 7
2.1灰口鑄鐵介紹 7
2.2氧化動力學 8
2.3氧化物保護層 10
2.4包覆擴散法 11
2.5微觀組織分析 12
三、設備介紹與研究方法 13
3.1實驗設備介紹 13
3.2實驗步驟流程及操作方法 18
3.2.1試片製備 19
3.2.2鋁化粉末的比例 20
3.2.3包覆擴散處理 21
3.2.4氧化動力學試驗 22
3.2.5儀器分析 23
四、實驗結果與討論 25
4.1灰口鑄鐵鋁化後之鍍層微結構 25
4.1.1 SEM觀察 25
4.1.2 X-ray分析 29
4.2鋁化灰口鑄鐵氧化動力學試驗後之鍍層微結構及重量變化 30
4.2.1 SEM觀察 30
4.2.2 X-ray分析 37
4.2.3重量變化 38
4.3討論 40
4.3.1鋁化層微結構 40
4.3.2高溫氧化 41
五、結論與建議 42
5.1結論 42
5.2建議 43
5.3研究心得 44
參考文獻 45
簡歷 48
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