Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon nanotube-nano polycrystalline diamond composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and relates to a carbon nanotube-nano polycrystalline diamond composite material and a preparation method thereof. Raw materials comprises by mass, 10-30% of carbon nanotubes (CNTs), with the balance being onion-like carbon (OLC). The preparation method comprises the following steps: mixing the two raw materials of OLC and CNT according to different mass ratios; and filling a hard alloy die with the CNT and OLC mixture obtained after mixing, and pre-pressing under 400-600 MPa; then putting the pre-pressed sample into a mold and performing high-temperature and high-pressure sintering under 7-25 GPa at 1800-2200 DEG C, performing heat preservation for 5-60 min, then cooling and performing pressure relief to obtain the composite material. The CNT is adopted to balance the internal pressure loss of the sintered body, the sintering condition is reduced, the problem that the sintering condition is high when OLC is adopted as a raw material to prepare the polycrystalline diamond sintered body is solved, and the high-hardness carbon nano tube-nano polycrystalline diamond composite material is obtained.
本发明属于复合材料技术领域，涉及一种碳纳米管‑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)和碳纳米管(CNT)，其中所述CNT的质量百分比为10～30wt.％，余量为OLC。制备时，将OLC和CNT两种原料按照不同质量比进行混料；将混料后的CNT和OLC混合物装填入硬质合金模具中预压，预压压力为400～600MPa。然后，把预压后的样品装入模具中进行高温高压烧结。烧结压力为7～25GPa，烧结温度为1800～2200℃，保温时间为5～60min，随后降温卸压，制得碳纳米管‑纳米聚晶金刚石复合材料。本发明采用CNT平衡烧结体内部压力损耗，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，获得了高硬度的碳纳米管‑纳米聚晶金刚石复合材料。
Carbon nanotube-nano polycrystalline diamond composite material and preparation method thereof
The invention belongs to the technical field of composite materials, and relates to a carbon nanotube-nano polycrystalline diamond composite material and a preparation method thereof. Raw materials comprises by mass, 10-30% of carbon nanotubes (CNTs), with the balance being onion-like carbon (OLC). The preparation method comprises the following steps: mixing the two raw materials of OLC and CNT according to different mass ratios; and filling a hard alloy die with the CNT and OLC mixture obtained after mixing, and pre-pressing under 400-600 MPa; then putting the pre-pressed sample into a mold and performing high-temperature and high-pressure sintering under 7-25 GPa at 1800-2200 DEG C, performing heat preservation for 5-60 min, then cooling and performing pressure relief to obtain the composite material. The CNT is adopted to balance the internal pressure loss of the sintered body, the sintering condition is reduced, the problem that the sintering condition is high when OLC is adopted as a raw material to prepare the polycrystalline diamond sintered body is solved, and the high-hardness carbon nano tube-nano polycrystalline diamond composite material is obtained.
本发明属于复合材料技术领域，涉及一种碳纳米管‑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)和碳纳米管(CNT)，其中所述CNT的质量百分比为10～30wt.％，余量为OLC。制备时，将OLC和CNT两种原料按照不同质量比进行混料；将混料后的CNT和OLC混合物装填入硬质合金模具中预压，预压压力为400～600MPa。然后，把预压后的样品装入模具中进行高温高压烧结。烧结压力为7～25GPa，烧结温度为1800～2200℃，保温时间为5～60min，随后降温卸压，制得碳纳米管‑纳米聚晶金刚石复合材料。本发明采用CNT平衡烧结体内部压力损耗，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，获得了高硬度的碳纳米管‑纳米聚晶金刚石复合材料。
Carbon nanotube-nano polycrystalline diamond composite material and preparation method thereof
一种碳纳米管-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) / DAI LIFENG (Autor:in) / YIN YUHANG (Autor:in)
16.06.2020
Patent
Elektronische Ressource
Chinesisch
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