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Al2O3-TiB2-TiSi2 ceramic material was fabricated by vacuum hot pressing technique and the crack healing behavior was investigated by means of high-temperature oxidation. The Vickers hardness indenter was used to precrack with a standard crack length of 300µm. According to the recovery of flexural strength and the microstructure of crack appearance, the effects of crack healing temperature, healing...
Strength retention is important for tool materials at high temperature because cutting temperature in machining is ranged from room temperature to 1000°C. A study examining the strength properties and fracture behaviour of TiB 2 -TiC-based composite ceramic cutting tool materials is presented at different temperatures. MoSi 2 and SiC additives are considered to investigate their effects...
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