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METHOD OF FORMING A SINTERED POLYCRYSTALLINE ULTRA HARD MATERIAL BY PULSED ELECTRICAL FIELD ASSISTED OR SPARK PLASMA SINTERING
METHOD OF FORMING A SINTERED POLYCRYSTALLINE ULTRA HARD MATERIAL BY PULSED ELECTRICAL FIELD ASSISTED OR SPARK PLASMA SINTERING
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机译：脉冲电场辅助或火花等离子体烧结形成多晶烧结超硬材料的方法
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摘要
The present invention relates to ultra-hard cutting elements, and in particular cutting elements or compacts formed by a pulsed electrical field assisted HPHT sintering process or a spark plasma HPHT sintering process. In an embodiment, a method of forming a polycrystalline ultra-hard material includes providing a mixture of ultra-hard particles, placing the mixture of ultra-hard particles into an enclosure, placing the enclosure into a press cell assembly having a heater, applying a repeated high-energy pulse of direct current to the heater to heat the ultra-hard particles, and pressing the enclosure at sufficient pressure to form a polycrystalline ultra-hard material.
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