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研究生:鄭貴仲
研究生(外文):Kuei-Chung Cheng
論文名稱:電漿熔射技術應用於熱輻射管之加熱特性研究
論文名稱(外文):Study on the Heating Effects of the Thermal Radiative Pipe Using the Plasma-Assisted Thermal Spray Technology
指導教授:林宜弘
指導教授(外文):Yi–Hong Lin
學位類別:碩士
校院名稱:國立屏東科技大學
系所名稱:機械工程系所
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:2010
畢業學年度:98
語文別:中文
論文頁數:61
中文關鍵詞:電漿熔射技術Al2O3塗層Al2O3+40%TiO2塗層熱輻射管放射率吸收率
外文關鍵詞:Plasma Thermal Spray TechnologyAl2O3 CoatingsAl2O3+40%TiO2 CoatingsRadiative PipeEmissivityAbsorptivity
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本實驗研究目的在運用電漿熔射陶瓷塗層改善不鏽鋼加熱管的表面熱輻射效應之研究。主要運用範圍於熱輻射加熱系統中,熱輻射加熱系統需要的是類似黑體的表面,若要有類似黑體的表面性質,則此表面性質要有高放射率、低反射率及低透視率的性質。
本實驗利用電漿熔射來披覆Al2O3及Al2O3+40%TiO2兩種不同陶瓷粉末塗層,分別披覆於加熱管表面及受熱體表面。實驗結果發現兩種陶瓷塗層披覆在不鏽鋼加熱管表面以純Al2O3之塗層加熱性穩定,與原有不鏽鋼金屬表面比較,放射率效能提昇有15%,披覆Al2O3+40%TiO2塗層之加熱性次之,提昇有10%以上。披覆在鋁合金基材受熱體上,以Al2O3+40%TiO2塗層平衡溫度最高,與鋁材金屬未加工表面比較,吸收率差異有4倍以上,Al2O3塗層也有3倍以上。電漿熔射後塗層性質改變物體表面放射率、吸收率及反射率,可以將原有的金屬材質的表面特性,轉換成塗層材料的表面性質,實驗結果中表面粗糙度的提昇可以增加其表面積,增加受熱體溫度的提昇,受熱體表面塗層材料特性影響受熱體受熱性能占更大的比例。
本實驗中電漿熔射技術運用在加熱管表面改質,改善金屬加熱管表面性質的放射率、吸收率,披覆Al2O3及Al2O3+40%TiO2塗層有提昇效果,對於運用熔射材料改善現有金屬加熱管作熱輻射效能上的提昇,對於現有加熱管材料改善可以有一個參考的方向。

The purpose of this study was to improve the thermal radiation effect of stainless steel heating pipes by using the plasma thermal spray technology. These pipes were mainly used as heaters in thermal radioactive heating systems. An idea heater in the system requires a surface similar to the black body, which performs the high radioactivity, low reflectivity and low transmissivity.
In this study, Al2O3 and Al2O3+40%TiO2 ceramic powder were coated onto the heating pipes and the heat absorbers respectively by using the plasma thermal spray process. The results indicated that the stainless steel heating pipe coated with Al2O3 was improved 15% in radioactivity higher than the raw pipes; the Al2O3+40%TiO2 coating performed 10%. Among the coated heat absorbers, the Al2O3+40%TiO2 coating held the highest equilibrium temperature. In addition, the Al2O3+40%TiO2 coating performed the absorptivity which was four times upward higher than raw aluminum absorber as the Al2O3 coating also was three times more. The original surface properties of metal materials, including radioactivity, absorptivity and reflectivity, would be modified as the coatings’ characters through the plasma thermal spray process. The results showed that the rise of surface roughness would increase its surface area and enhance the rising of absorber’s temperature. Moreover, the characters of coatings influenced the thermal properties of absorbers in a greater proportion.
In this study, the properties of heating pipe surface were modified to improve the radioactivity and absorptivity by the plasma thermal spray technology. The Al2O3 and Al2O3+40%TiO2 coating indeed improved the heat radioactive efficiency of metal heating tube; furthermore, also provided an aspect to reinforce the present heating tubes.

目錄
摘要 I
Abstract III
謝誌 V
目錄 VI
表目錄 VIII
圖目錄 IX
符號索引 XI
第1章 緒論 1
1.1 論文架構 3
第2章 文獻回顧 4
2.1 熱熔射技術 4
2.2 熱熔射塗層之微結構說明 5
2.3 熱熔射技術製程分類 6
2.4 Al2O3塗層及Al2O3+40%TiO2塗層之披覆方式 11
2.4.1 電漿熔射參數的影響 12
2.4.2 影響塗層性質的熔射變數 12
2.4.3 熔射變數分析說明 12
2.5 電漿熔射陶瓷塗層之塗層性質 18
2.6 加熱管 19
2.6.1 輻射原理 19
第3章 實驗規劃及檢測設備說明 23
3.1 實驗規劃 23
3.2 實驗設備 24
3.2.1 電漿熔射設備 24
3.2.2 熔射控制設備 24
3.2.3 粗化處理 25
3.2.4 表面粗糙度(Ra)量測 25
3.2.5 電漿熔射參數設計 26
3.2.6 金相分析 26
3.2.7 數位型溫度記錄器 26
3.3 實驗相關規格 27
3.4 測試平台製作與實驗規劃 29
第4章 實驗結果與討論 32
4.1 表面粗糙度量測 37
4.2 金相組織分析 42
4.3 溫度記錄器溫度曲線 46
4.3.1 加熱管實驗對照組 46
4.3.2 受熱體實驗對照組 48
第5章 結論 54
參考文獻 56
附錄一 59
作者簡介 61


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