本文主要為探討使用氬銲(GTAW)方式，將被覆材料分別有碳化鈦(TiC)混合固定比例的立方氮化硼(cBN)、銅粉以及氮化鋁(AlN)添加不同粉末(Ni、Co、Ti、C)三大類，分別被覆在AISI1020低碳鋼基材表面上，在各別使用空氣與銅塊水冷方式進行冷卻，最後利用各種儀器，光學顯微鏡( Optical Microscope；OM)、掃描式電子顯微鏡(Scanning Electron Microscope；SEM)、能量散步光譜儀 (Energy Dispersive Spectrometer；EDS) 、電子微探針分析儀(Electron Probe Micro-analyze； EPMA)、X-Ray 繞射分析儀(X-Ray Diffractomer；XRD)、維克式硬度試驗機分析各種被覆層顯微組織、相組成、微硬度等顯微結構;以及探討在不同冷卻方式下，對被覆層的影響效應;而磨耗試驗則使用迴轉式磨耗試驗機以銷對盤(pin-on-disc)線接觸方式進行試驗，藉此評估各種被覆層之耐磨耗性。
研究結果顯示，銅塊水冷方式之cBN-60%TiC被覆層微硬度為HV1186，為所有試片中微硬度最高者且耐磨耗能力亦最佳，由於銅塊水冷方式，冷卻速率快，導致被覆層裡殘留較多數量的TiC與cBN粉末。分析不同冷卻方式之AlN-Ni與AlN-Co之被覆層顯微組織，雖然顯微組成相同，但隨著冷卻速率提升，導致被覆層顯微組織細化，而提高被覆層之微硬度。

In this thesis, three types of materials are applied to clad onto AISI 1020 carbon steel by a gas tungsten arc welding (GTAW) process. Those three materials are titanium carbide (TiC) mixed with cubic boron nitride (cBN), copper powder and aluminum nitride (AlN) mixed with Ni, Co, Ti and C powders. During cladding, specimens were cooled by air or copper blocks. After cladding, an optical microscope (OM), a scanning electron microscope (SEM) with energy dispersive X-ray spectrometer (EDS), an electron probe microanalyzer (EPMA) and an X-ray diffractometer (XRD) and an micro-hardness tester were used to characterize of the clad layers with different cooling methods. Furthermore, pin-on-disc wear tests were carried out using a rotating tribometer to evaluate tribological performance of the clad layers
The experimental results show that cBN-60%TiC with copper/water cooling exhibits a hardness of HV1186, which is the highest among the other specimens, performing the best wear resistance because of a faster cooling rate to retain residual TiC and cBN. With different cooling methods, the clad layers of AlN-Ni and AlN-Co show the same microstructure, but finer microstructure was found along with an increased cooling rate, resulting in a higher hardness.

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