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http://dx.doi.org/10.4191/kcers.2012.49.6.581

Machinable Ceramics Made by the Reaction Sintering of PSZ, Al2O3 and TiO2  

Park, Jeong Hyun (Department of Materials and Components Engineering, Dongeui University)
Jung, Dong Sik (Department of Materials and Components Engineering, Dongeui University)
Lee, Won Jae (Department of Materials and Components Engineering, Dongeui University)
Kim, Il Soo (Department of Materials and Components Engineering, Dongeui University)
Publication Information
Journal of the Korean Ceramic Society / v.49, no.6, 2012 , pp. 581-585 More about this Journal
Abstract
Machinability is important in engineering applications, especially in the current micro-electronics industry. Most ceramic components have complex shapes and hence require machining generally with diamond tools, which incurs a high production cost. Recently, h-BN-containing machinable ceramics have been developed, but these materials are very expensive due to the high raw materials and production costs. Therefore, the development of low-cost machinable ceramics is necessary. In this study, inexpensive $Al_2TiO_5$ was studied as a replacement for h-BN. $Al_2O_3$, $TiO_2$ and partially stabilized $ZrO_2$(PSZ) powders were mixed with various mole ratios and were sintered at $1500^{\circ}C$ for 1 h. The density, hardness and strength were then measured. The phase analysis and microstructures were observed by XRD and SEM, respectively. The machinability of each specimen was tested by micro-hole machining. The results of this research showed that the produced composites could be used as low-cost machinable ceramics.
Keywords
PSZ; $Al_2TiO_5$; Machinable ceramics; Reaction sintering;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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