Mechanical Properties and Microstructure of Self-Lubricating Ceramic Cutting Tool Materials

Jian Xin Deng; Tong Kun Cao; Jia Lin Sun

doi:10.4028/www.scientific.net/MSF.471-472.221

Paper Titles

Three-Dimensional Finite Element Analysis of Metal Powder Compaction
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Effect of Whisker Content on Mechanical Properties and Microstructure of Hydroxyapatite-SiC_w Composite Bioceramics
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Study on Groove Optimization Technology Based on the Power Spectrum Analysis
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Modeling of Computer-Controlled AC Servo Feed System
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Mechanical Properties and Microstructure of Self-Lubricating Ceramic Cutting Tool Materials
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Fast Consolidation of Iron Powders by Pulse Electric Current Sintering
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Development of 3-D Parameterized Design System for Involute Gear Parts
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Study on Multi-Dimension Integration Technology of CAPP/PDM
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Study on the Micro-Topography and Texture Characteristic of Machined Surface in High Speed Turning for Carbon Steel
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HomeMaterials Science ForumMaterials Science Forum Vols. 471-472Mechanical Properties and Microstructure of...

Mechanical Properties and Microstructure of Self-Lubricating Ceramic Cutting Tool Materials

Abstract:

Al2O3/TiC ceramic tool materials with the addition of solid lubricants such as BN and CaF2 were produced by hot pressing. Effect of the solid lubricants on the microstructure and mechanical properties has been studied. Results showed that AlN phase resulted from the reaction of Al2O3 with BN was formed in Al2O3/TiC/BN composite after sintering. Significant micro-cracks resulted from the residual stress owing to the difference in the thermal expansion coefficient were found on the polished surface, and caused large mechanical properties degradation. While Al2O3/TiC/CaF2 composite showed higher flexural strength, fracture toughness, and hardness compared with that of Al2O3/TiC/BN composite owing its porosity absent and finer microstructure.