Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycrystalline SiC-diamond double-layer composite material and preparation method thereof
The invention relates to a polycrystalline SiC-diamond double-layer composite material and a preparation method thereof and belongs to the inorganic non-metallic material field. According to the method, SiC powder or polycrystalline blocks and diamond powder are used as raw materials; purification treatment and pre-press molding are carried out on the raw materials; the pre-press molded raw materials are wrapped with a metal wrapper, a high-pressure assembled unit is installed and put into ultrahigh-pressure equipment; and the high-pressure assembled unit is sintered under the conditions of 600-2300 DEG C high temperature and 1-25 GPa high pressure, so that the polycrystalline SiC-diamond double-layer composite material can be prepared. The polycrystalline SiC-diamond double-layer composite material prepared by the method has a polycrystalline diamond and polycrystalline SiC double-layer structure; a diamond layer and a SiC layer are compounded together through high-temperature and high-pressure sintering; the two layers of polycrystalline materials are tightly combined, grain size distribution is uniform, and density is high; the polycrystalline SiC-diamond double-layer compositematerial not only has the characteristics of high hardness and high fracture toughness of diamond, but also combines the advantages of low cost and easiness in sintering of SiC polycrystals.
本发明涉及一种多晶SiC—金刚石双层复合材料及其制备方法，属于无机非金属材料领域，所述方法以SiC粉末或多晶块体、金刚石粉末为原料，对原料进行净化处理，预压成型，预压成型的原料用金属包裹体包裹，装配高压组装单元，放置于超高压设备中，在600‑2300℃，1‑25 GPa高温高压条件下烧结，制备得到多晶SiC—金刚石双层复合材料；利用本发明制备的多晶SiC—金刚石双层复合材料，具有多晶金刚石与多晶SiC双层结构，金刚石层与SiC层经高温高压烧结复合在一起，两层多晶材料结合紧密，晶粒大小分布均匀，致密度高；该多晶SiC—金刚石双层复合材料既具备金刚石高硬度高断裂韧性的特点，又结合了SiC多晶体成本低、易烧结的优点。
Polycrystalline SiC-diamond double-layer composite material and preparation method thereof
The invention relates to a polycrystalline SiC-diamond double-layer composite material and a preparation method thereof and belongs to the inorganic non-metallic material field. According to the method, SiC powder or polycrystalline blocks and diamond powder are used as raw materials; purification treatment and pre-press molding are carried out on the raw materials; the pre-press molded raw materials are wrapped with a metal wrapper, a high-pressure assembled unit is installed and put into ultrahigh-pressure equipment; and the high-pressure assembled unit is sintered under the conditions of 600-2300 DEG C high temperature and 1-25 GPa high pressure, so that the polycrystalline SiC-diamond double-layer composite material can be prepared. The polycrystalline SiC-diamond double-layer composite material prepared by the method has a polycrystalline diamond and polycrystalline SiC double-layer structure; a diamond layer and a SiC layer are compounded together through high-temperature and high-pressure sintering; the two layers of polycrystalline materials are tightly combined, grain size distribution is uniform, and density is high; the polycrystalline SiC-diamond double-layer compositematerial not only has the characteristics of high hardness and high fracture toughness of diamond, but also combines the advantages of low cost and easiness in sintering of SiC polycrystals.
本发明涉及一种多晶SiC—金刚石双层复合材料及其制备方法，属于无机非金属材料领域，所述方法以SiC粉末或多晶块体、金刚石粉末为原料，对原料进行净化处理，预压成型，预压成型的原料用金属包裹体包裹，装配高压组装单元，放置于超高压设备中，在600‑2300℃，1‑25 GPa高温高压条件下烧结，制备得到多晶SiC—金刚石双层复合材料；利用本发明制备的多晶SiC—金刚石双层复合材料，具有多晶金刚石与多晶SiC双层结构，金刚石层与SiC层经高温高压烧结复合在一起，两层多晶材料结合紧密，晶粒大小分布均匀，致密度高；该多晶SiC—金刚石双层复合材料既具备金刚石高硬度高断裂韧性的特点，又结合了SiC多晶体成本低、易烧结的优点。
Polycrystalline SiC-diamond double-layer composite material and preparation method thereof
一种多晶SiC—金刚石双层复合材料及其制备方法
OUYANG XIAOPING (Autor:in) / WANG HAIKUO (Autor:in) / OUYANG XIAO (Autor:in) / TAN ZHONGJUN (Autor:in)
18.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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