氬銲被覆抗磨材料於低碳鋼磨潤特性研究

Tribology of Low Carbon Steel Cladded by Wear-resistant materials Using Gas Tungsten Arc Welding

李政憲(Zheng-Xian Li)

指導教授 ： 康淵 ； 張永鵬

中原大學/工學院/機械工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201101082

摘要

本文係將鈦合金與陶瓷抗磨材料，利用惰氣鎢極電弧銲( gas tungsten arc welding ; GTAW )方法被覆於低碳鋼上，以提高基材的耐磨性。然後利用光學顯微鏡(OM)、掃描式電子顯微鏡(SEM)、能量色散X射線光譜儀(EDS)和洛氏(Rocwell Hardness)硬度試驗機，對不同銲接條件的碳化鈦(TiC)被覆層進行顯微組織化學成分與硬度分析，更進一步利用磨耗試驗機探討被覆的抗磨材料磨潤特性。利用惰氣鎢極電弧銲( gas tungsten arc welding ; GTAW )被覆，可使TiC被覆層形成良好的冶金結合，因TiC顆粒均勻的分佈在機板表面形成被覆層。經由實驗證實，主要影響被覆層硬度與耐磨性的銲接因素，為銲接速度與銲接電流。

關鍵字

微米粉體 ； 低碳鋼 ； 氬銲 ； 鈦合金 ； 磨潤學 ； 奈米粉體 ； 抗磨材料 ； 被覆

並列摘要

This paper was coat titanium and ceramic which is anti-wear material using gas tungsten arc welding (GTAW) method on low carbon steel to improve wear resistance of the substrate. Microstructure and surface hardness of the cladding were investigated and measured on samples under different welding conditions. The chemical composition, microstructure and surface morphology of the clad layer were analyzed using optical microscope (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and Rockwell hardness testing machine.
Also, using ball on ring tester tribological properties of the anti-wear coating materials was discussed. Using gas tungsten arc welding (GTAW) clad has a homogenous microstructure, a good metallurgical bond with its substrate, and uniform dispersion of TiC particulates in its cladding surface. The experimental results reveal that the key influences on wear resistance performance are welding current and welding speed.

並列關鍵字

Low carbon steel ； Titanium alloy ； Gas Tungsten Arc Welding. ； Anti-wear materials ； Tribology ； Nano Powder ； Micron Powder ； Cladded surface

參考文獻

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