Hot pressing and spark plasma sintering were applied to manufacture electrical discharge machinable ZTA-TiC ceramics containing 17 vol.% zirconia (1.5Y) and 24 vol.% titanium carbide in an alumina matrix. Sintering was carried out at 1450–1600 °C and 40 MPa pressure with 2 h dwell for HP and 10 min for SPS. The influence of sintering conditions on mechanical properties, microstructure, phase composition and electrical conductivity was investigated. Both sintering technologies lead to fully densified samples with similar strength and toughness. Hardness was generally lower for SPS. SPS samples develop a finer microstructure. HP samples the TiC grains tend to merge at high sintering so that HP materials reach significantly higher conductivities. Productivity and energy consumption per piece can be significantly decreased by shifting to SPS. Both types of material were ED-machinable. Hot pressed ceramics showed better cutting performance and improved surface quality in trimming operations.

施加热压和火花等离子体烧结来制造可放电加工的ZTA-TiC陶瓷，该陶瓷在氧化铝基体中包含17％（体积）的氧化锆（1.5Y）和24％（体积）的碳化钛。烧结在1450–1600°C和40 MPa的压力下进行，HP停留2小时，SPS停留10分钟。研究了烧结条件对机械性能，显微组织，相组成和电导率的影响。两种烧结技术都可以产生强度和韧性相近的完全致密化的样品。SPS的硬度通常较低。SPS样品具有更好的微观结构。HP样品中TiC晶粒倾向于在高烧结度下融合，因此HP材料达到明显更高的电导率。通过改用SPS，可以显着降低每件产品的生产率和能耗。两种类型的材料都可进行ED加工。热压陶瓷在修边操作中显示出更好的切割性能和改善的表面质量。