微弧氧化(Micro-Arc Oxidation, MAO)可以加速鈦金屬表面氧化層之生成，此膜層具有良好的耐腐蝕性及耐磨耗性。本研究首先於AISI 1020低碳鋼基材表面進行噴砂處理達Sa3級，再熱噴塗上純鈦，形成鈦低碳鋼複合材料，接著於純鈦塗層上進行微弧氧化製成陶瓷層。在微弧氧化過程中，於矽酸鹽類的電解液中加入五種不同的添加劑，包含二氧化鈦0.5 g/L、三氧化二鋁0.5 g/L、石墨烯0.003 g/L、碳化硼0.5 g/L、立方氮化硼0.5 g/L，以及不同的微弧電壓250 V、350 V及450 V。最後利用掃描式電子顯微鏡、能量分散光譜儀、X射線繞射儀、測厚儀、表面粗糙度量測系統、磨耗試驗儀及恆電位儀分析陶瓷層之性質。依據損失重量判斷陶瓷層之耐磨耗性，結果顯示添加碳化硼有較低之平均損失重量(1 x 10-3 g)，此外，立方氮化硼在微弧電壓450 V也具有較低的損失重量(8 x 10-4 g)，代表其耐磨性較好。依據腐蝕電位及腐蝕電流判斷陶瓷層之耐腐蝕性，發現添加三氧化二鋁(450 V)以及立方氮化硼(250 V)，有較高之腐蝕電位，分別為-0.368 V以及-0.378 V，且腐蝕電流與其他操作參數相近，以及添加石墨烯(450 V)與立方氮化硼(450 V)，測得到較低之腐蝕電流，分別為1.34 x 10-5 A/cm2以及9.31 x 10-5 A/cm2，而腐蝕電位則與其他操作參數相近。此外，添加立方氮化硼於微弧電壓450 V時，同時具有較佳之耐腐蝕及耐磨耗性。

Micro-arc oxidation (MAO) accelerates the formation of an oxide layer on the surface of titanium, which has good corrosion and wear resistance. In this study, the surface of AISI 1020 low carbon steel substrate was firstly sandblasted to Sa3 level, and then thermal sprayed with pure titanium to form a titanium/ low carbon steel composite material and followed by micro-arc oxidation on the pure titanium coating to form a ceramic layer. During the micro-arc oxidation process, five different additives added to the silicate electrolyte, including titanium dioxide 0.5 g/L、alumina 0.5 g/L、graphene 0.003 g/L、boron carbide 0.5 g/L, cubic boron nitride 0.5 g/L, and different micro-arc voltages of 250 V, 350 V, and 450 V were used. Finally, the scanning electron microscope, energy dispersive spectrometer, X-ray diffractometer, thickness gauge, surface roughness measurement system, abrasion tester, and constant potential meter were used to analyze the properties of the ceramic layers. The wear resistance of the ceramic layer is judged by the loss weight, and the results show that the addition of boron carbide has a lower average loss weight, and the cubic boron nitride (450 V) also has a lower loss weight (1 x 10-3 g), which indicates better wear resistance. Judging the corrosion resistance of the ceramic layers based on the corrosion potential and the corrosion current, it is found that the addition of alumina (450 V) and cubic boron nitride (250 V) gives higher corrosion potentials of -0.368 V and -0.378 V, respectively, and the corrosion current is similar to the other operating parameters, while the addition of graphene (450 V) and cubic boron nitride (450 V) gives lower corrosion currents of 1.34 x 10-5 A/cm2 and 9.31 x 10-5 A/cm2 were obtained, respectively, and the corrosion potential is similar to the other operating parameters. In addition, the addition of cubic boron nitride at 450 V also provides better corrosion and wear resistance.

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