Microstructure and mechanical properties of an equimolar Al2O3-SiO2-TiO2-ZrO2 composite film on aluminum bronze alloy synthesized by the sol-gel technique

• Main Authors: Wang, Hong-Yi, 王弘毅
• Other Authors: Chou, Chau-Chang
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/dpnsgb

碩士 === 國立臺灣海洋大學 === 機械與機電工程學系 === 106 === In this study, equimolar alumina-silica-titania-zirconia composite films were deposited on C95400 aluminum bronze alloy synthesized by the sol-gel technique. The compositions of the composite films were sintered at 600 ℃ under an argon gas atmosphere (oxygen-containing 9 ppm). By adding PO and PVP in precursor solution, adjusting pulling out speed, PVP content, baking temperature and coating times, discuss coating film material component, microstructure and surface morphology , and find suitable experiment condition. The thermal stability, structure and composition of composite films could be analyzed by using thermogravimetric analyzer (TGA), X-ray diffraction (XRD), Fourier transform infrared spectroscope (FTIR), Raman scattering spectroscope. The surface and mechanical properties of composite films were investigated by using scanning electron microscope (SEM) and scratch test. The results showed that added PO and PVP in films and suitable process could decrease its crack. Repeated coating films on substrate could promote the adhesion. A diamond-incorporated coating was successfully built by the micro-diamond dispersed precursor solution proposed by this work.