本研究使用熔融沉積成形法之3D列印機，搭配使用316L不鏽鋼粉末摻合聚乳酸之複合線材Stainless Steel 316L Filamet™(線材密度為4.81 g/cm^3，金屬粉末含量80-85 wt %)印製零件，再將印製好的零件放入高溫燒結爐中經過燒結後即可獲得純金屬零件。相較於使用純金屬粉末進行雷射或是電子束燒結等成形法，此種方法是一種低成本的製造方式。在燒結的製程中，本研究探討了三種不同燒結溫度以及時間搭配出的燒結曲線；以及三種不同的耐火材料對成品的影響。燒結完成後的成品，將探討試片之收縮率，以及進行一系列機械性質的量測，並使用掃描式電子顯微鏡進行表面觀測，比較試片在燒結前後的成分及表面差異。其燒結後試片之所有實驗量測結果將與一般316L不鏽鋼做比較。研究結果中發現，燒結後的試片體積將會縮小一定的比例，若製造在尺寸上有一定要求的零件可依照此研究實驗出的收縮比例，在列印時先將零件放大，再研磨至需要的尺寸即可。另外，本研究中的燒結製程會使燒結後零件含碳量增加，進而些許的提升了洛式硬度值及耐磨耗性能，但在拉伸強度及衝擊能量中的結果都低於一般316L不鏽鋼，也降低了耐腐蝕的性能。

In this study, by using composite filaments containing 316L stainless steel powder and polylactic acid (PLA), solid metals and parts can be fabricated through a sintering process with low-cost fused deposition modeling (FDM). The sintering recipe of three different sintering temperatures and times and the effect of three different refractories on the parts are discussed. After the sintering of the finished product, a series of mechanical properties were measured and the surface of the test piece before and after sintering was compared by electron microscope. Test items include Rockwell hardness, wearing test, tensile test, corrosion test, shrinkage rate, impact test and thermal conductivity measurement. All experimental measurement results of the sintered test sample will be compared with general 316L stainless steel.

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