The optimal process parameters for microstructure and properties of extruding zirconia based ceramics by Taguchi method

• Main Authors: Chang-Ting Tsai, 蔡長庭
• Other Authors: Shi-Yung Chiou
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/90285420494043621655

碩士 === 國立高雄應用科技大學 === 模具工程系 === 98 === 3mol%Y2O3-stabilized zirconia (3YSZ)are intensively studied due to high hardness、high toughness and good chemical and high temperature properties. This study is to design and manufacture 3YSZ under controlling the process variables such as granulation period of TiN、sintering temperature and holding time. The target properties for the sintered products are flexible strength or transverse rupture strength (TRS) and fracture toughness. The analysis of variance (ANOVE) is used to evaluate the contribution and optimal process variables and compare with experimental processes. The results indicate that the optimal parameter assemble for 3YSZ manufacturing is A3 B2 C3 D2,which represents the TRS of 736.75MPa and fracture toughness of 7.545MPa*m1/2 are obtained under the conditions of 8hrs of granulation of TiN powder, no holding time in first stage and sintering 20hrs at 1150℃ in second stage.