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Re-sintered boron-rich polycrystalline cubic boron nitride and method for making same
Re-sintered boron-rich polycrystalline cubic boron nitride and method for making same
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机译:再烧结富硼多晶立方氮化硼及其制备方法
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摘要
Disclosed is a method for making re-sintered polycrystalline CBN compact which comprises placing sintered boron-rich polycrystalline CBN particles in a high temperature/high pressure apparatus and subjecting said boron-rich CBN particles to a pressure and a temperature adequate to re-sinter said particles, the temperature being below the reconversion temperature of CBN, for a time sufficient to re-sinter the polycrystalline CBN particles therein. The boron-rich polycrystalline CBN particles in the HP/HT apparatus contain no impurity which would interfere with the sintering process (CBN sintering inhibiting impurities) and no sintering aid material.
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机译:公开了一种用于制造重新烧结的多晶CBN压块的方法,该方法包括:将烧结的富硼多晶CBN颗粒置于高温/高压设备中,并使所述富硼CBN颗粒经受足以使所述富硼CBN颗粒重新烧结的压力和温度。该温度低于CBN的再转化温度一段足以重新烧结其中的多晶CBN颗粒的时间。 HP / HT设备中的富含硼的多晶CBN颗粒不包含会干扰烧结过程的杂质(抑制CBN烧结的杂质),并且不包含烧结助剂。
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