延性鑄鐵作為工業上廣泛應用的材料,卻因其為鐵基材料而使其耐腐蝕及耐磨耗性質不佳。本研究旨在使用延性鑄鐵作為基材,使用無電鍍鎳作為中介層,改善因為延性鑄鐵當中的石墨孔洞所造成的披覆狀況不佳;並利用陰極電弧沉積法,在降低並固定轉速的情況下,沉積TiAlN/ZrN之多層膜。另外,改變基材偏壓參數,觀察探討無電鍍鎳中介層以及不同基材偏壓變化下,對於膜層性質的影響;另為了觀察膜層當中殘留應力的變化,取其中一組做鍍膜後熱處理,以觀察熱處理對於膜層的影響。 本研究利用殘留應力量測、腐蝕方面的極化和浸漬試驗、奈米壓痕以及磨耗方面的單顆粒沖蝕、濕式沖蝕和磨耗試驗來檢測並觀察探討膜層性質。透過實驗結果可以發現,不論是耐腐蝕或耐磨耗性質在經由膜層披覆後,均有明顯的提升,進一步擴大了延性鑄鐵可應用的範疇;另外,使用無電鍍鎳作為中介層,確實且有效的增加了膜層的附著性和其對於基材的保護作用;而在經熱處理後,可發現其殘留應力確有下降的趨勢,且其硬度值和其耐腐蝕、耐磨耗性質亦有所改變。
Ductile iron (DI) is widely used in the industry, but the iron matrix cause the poor wear and corrosion resistance, and has limited the usage of DI. In this study, we used DI as substrate, and Electroless Nicke (EN) as interlayer to avoid hole-defect on the surface due to the nodular graphite in the matrix, deposited TiAlN/ZrN multilayer by used cathodic arc deposition (CAD) with lower the rotation speed. And discussed the layer properties change as the effect of substrate bias change and the EN interlayer. To understand the change of residual stress, the post-heat treatment (PH) was used on one set of substrate bias. The properties of residual stress, polarization test, immersion test, solid particle erosion test, slurry erosion test, and the wear test by Ball-on-disc, were all analyzed for exploring the effects of the EN interlayer and various substrate bias (one with post-heat treatment) conditions on the surface properties. The experimental results showed that the TiAlN/ZrN multilayer deposited on EN interlayer has improved the wear and corrosion resistance of the DI, and post-heat treatment has lower the residual stress and changed the hardness and wear and corrosion resistance of the film.