Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Cubic boron nitride-nano polycrystalline diamond composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and relates to a cubic boron nitride-nano polycrystalline diamond composite material and a preparation method thereof. The cubic boron nitride-nano polycrystalline diamond composite material comprises onion-like carbon (OLC) and cubic boron nitride (cBN) and particularly comprises the raw mateirals by mass: 15-50 wt.% of cBN andthe balance being OLC. The preparation method comprises the steps: mixing the two raw materials OLC and cBN according to different mass ratios; and pre-pressing the mixture of the cBN and the OLC which are mixed; and then carrying out high-temperature and high-pressure sintering on the pre-pressed sample, wherein the sintering pressure is 8-25 GPa, the sintering temperature is 1600-2200 DEG C, andthe heat preservation time is 5-60 min; then cooling and releasing the pressure, and thus preparing the cubic boron nitride-nano polycrystalline diamond composite material. By utilizing the similarity and correspondence of the cBN and the diamond structure, the sintering condition is reduced, the problem of high sintering condition for preparing the polycrystalline diamond sintered body by adopting the OLC as the raw material is solved, and the high-hardness cubic boron nitride-nano polycrystalline diamond composite material is obtained.
本发明属于复合材料技术领域，涉及一种立方氮化硼‑纳米聚晶金刚石复合材料及其制备方法，其原料包括碳纳米葱(OLC)和立方氮化硼(cBN)，其中所述cBN的质量百分比为15～50wt.％，余量为OLC。制备时，将OLC和cBN两种原料按照不同质量比进行混料；将混料后的cBN和OLC混合物进行预压。然后，将预压后的样品进行高温高压烧结。烧结压力为8～25GPa，烧结温度为1600～2200℃，保温时间为5～60min，随后降温卸压，制得立方氮化硼‑纳米聚晶金刚石复合材料。本发明利用cBN与金刚石结构的相似性和对应性，降低了烧结条件，解决了采用OLC为原料制备聚晶金刚石烧结体的烧结条件高的问题，获得了高硬度的立方氮化硼‑纳米聚晶金刚石复合材料。
Cubic boron nitride-nano polycrystalline diamond composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and relates to a cubic boron nitride-nano polycrystalline diamond composite material and a preparation method thereof. The cubic boron nitride-nano polycrystalline diamond composite material comprises onion-like carbon (OLC) and cubic boron nitride (cBN) and particularly comprises the raw mateirals by mass: 15-50 wt.% of cBN andthe balance being OLC. The preparation method comprises the steps: mixing the two raw materials OLC and cBN according to different mass ratios; and pre-pressing the mixture of the cBN and the OLC which are mixed; and then carrying out high-temperature and high-pressure sintering on the pre-pressed sample, wherein the sintering pressure is 8-25 GPa, the sintering temperature is 1600-2200 DEG C, andthe heat preservation time is 5-60 min; then cooling and releasing the pressure, and thus preparing the cubic boron nitride-nano polycrystalline diamond composite material. By utilizing the similarity and correspondence of the cBN and the diamond structure, the sintering condition is reduced, the problem of high sintering condition for preparing the polycrystalline diamond sintered body by adopting the OLC as the raw material is solved, and the high-hardness cubic boron nitride-nano polycrystalline diamond composite material is obtained.
本发明属于复合材料技术领域，涉及一种立方氮化硼‑纳米聚晶金刚石复合材料及其制备方法，其原料包括碳纳米葱(OLC)和立方氮化硼(cBN)，其中所述cBN的质量百分比为15～50wt.％，余量为OLC。制备时，将OLC和cBN两种原料按照不同质量比进行混料；将混料后的cBN和OLC混合物进行预压。然后，将预压后的样品进行高温高压烧结。烧结压力为8～25GPa，烧结温度为1600～2200℃，保温时间为5～60min，随后降温卸压，制得立方氮化硼‑纳米聚晶金刚石复合材料。本发明利用cBN与金刚石结构的相似性和对应性，降低了烧结条件，解决了采用OLC为原料制备聚晶金刚石烧结体的烧结条件高的问题，获得了高硬度的立方氮化硼‑纳米聚晶金刚石复合材料。
Cubic boron nitride-nano polycrystalline diamond composite material and preparation method thereof
一种立方氮化硼-纳米聚晶金刚石复合材料及其制备方法
LI YANGUO (Autor:in) / ZOU QIN (Autor:in) / WANG MINGZHI (Autor:in) / ZHAO YUCHENG (Autor:in) / WANG ZHIWEI (Autor:in) / ZOU JUAN (Autor:in) / YIN YUHANG (Autor:in)
30.06.2020
Patent
Elektronische Ressource
Chinesisch
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