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URN etd-0809110-164312 Statistics This thesis had been viewed 2973 times. Download 1156 times. Author Yin-Hwa Cheng Author's Email Address No Public. Department Materials Engineering Year 2009 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 135 Title Study on Surface Properties of Ductile Cast Iron Coated Electroless Plating Nickel and PVD-(TiAlN/ZrN) Keyword TiAlN/ZrN multilayer EN interlayer post-heat treatment post-heat treatment EN interlayer TiAlN/ZrN multilayer Abstract 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.
Advisor Committee Cheng-Hsun Hsu - advisor
Cherng-Yuh Su - co-chair
Chung-Kwei Lin - co-chair
Yi Hu - co-chair
Files Date of Defense 2010-07-22 Date of Submission 2010-08-10