Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of superhard high-strength bionic laminated diamond-B4C-SiC/Si3N4-SiC ceramic composite material
The invention relates to a preparation method of a superhard high-strength bionic laminated diamond-B4C-SiC/SI3N4-SiC ceramic composite material, which comprises the following steps: S1, selecting diamond, boron powder and silicon powder as raw materials of a first layer, and carrying out ball milling and drying to obtain ternary mixed powder consisting of B, Si and diamond; the raw materials of the second layer are selected from alpha-Si3N4 powder, SiC powder, Y2O3 powder and Al2O3 powder; s2, B, Si and diamond mixed powder is flatly laid at the bottom of a graphite mold, pressure is applied to flatten the mixed powder, then alpha-Si3N4, SiC, Y2O3 and Al2O3 are flatly laid on the surface of the first layer, and pressure is applied to form a prefabricated blank; s3, argon is introduced, axial pressurization is carried out, pulse current is applied, and sintering is carried out; cooling along with the furnace to obtain a required block sample; and S4, removing the graphite paper on the surface of the sample, and grinding, polishing, etching and the like on the surface of the block sample. The surface is high in hardness and overall high in strength, and plays an important role in the anti-impact protection field; the motor bearing can be applied to the field of new energy automobiles, and is lower in density and higher in wear resistance.
本发明涉及一种超硬高强的仿生叠层金刚石‑B4C‑SiC/SI3N4‑SiC陶瓷复合材料制备方法，包括以下步骤：S1、第一层原料选取金刚石、硼粉和硅粉，经球磨干燥后得到由B、Si、金刚石组成的三元混合粉体；第二层原料选取α‑Si3N4粉、SiC粉、Y2O3粉和Al2O3粉；S2、将B、Si、金刚石混合粉末平铺在石墨模具底部并施加压力使其平整，再将α‑Si3N4、SiC、Y2O3与Al2O3平铺在第一层的表面，并施加压力成型为预制坯体；S3、充入氩气，进行轴向加压，施加脉冲电流，烧结；随炉冷却，得到所需块体样品；S4、除去样品表面的石墨纸，对块体样品表面进行研磨、抛光、刻蚀等处理后。本发明表面高硬度、整体高强度，在抗冲击防护领域发挥重要作用；可应用于新能源汽车领域的电机轴承，密度更低耐磨性更高。
Preparation method of superhard high-strength bionic laminated diamond-B4C-SiC/Si3N4-SiC ceramic composite material
The invention relates to a preparation method of a superhard high-strength bionic laminated diamond-B4C-SiC/SI3N4-SiC ceramic composite material, which comprises the following steps: S1, selecting diamond, boron powder and silicon powder as raw materials of a first layer, and carrying out ball milling and drying to obtain ternary mixed powder consisting of B, Si and diamond; the raw materials of the second layer are selected from alpha-Si3N4 powder, SiC powder, Y2O3 powder and Al2O3 powder; s2, B, Si and diamond mixed powder is flatly laid at the bottom of a graphite mold, pressure is applied to flatten the mixed powder, then alpha-Si3N4, SiC, Y2O3 and Al2O3 are flatly laid on the surface of the first layer, and pressure is applied to form a prefabricated blank; s3, argon is introduced, axial pressurization is carried out, pulse current is applied, and sintering is carried out; cooling along with the furnace to obtain a required block sample; and S4, removing the graphite paper on the surface of the sample, and grinding, polishing, etching and the like on the surface of the block sample. The surface is high in hardness and overall high in strength, and plays an important role in the anti-impact protection field; the motor bearing can be applied to the field of new energy automobiles, and is lower in density and higher in wear resistance.
本发明涉及一种超硬高强的仿生叠层金刚石‑B4C‑SiC/SI3N4‑SiC陶瓷复合材料制备方法，包括以下步骤：S1、第一层原料选取金刚石、硼粉和硅粉，经球磨干燥后得到由B、Si、金刚石组成的三元混合粉体；第二层原料选取α‑Si3N4粉、SiC粉、Y2O3粉和Al2O3粉；S2、将B、Si、金刚石混合粉末平铺在石墨模具底部并施加压力使其平整，再将α‑Si3N4、SiC、Y2O3与Al2O3平铺在第一层的表面，并施加压力成型为预制坯体；S3、充入氩气，进行轴向加压，施加脉冲电流，烧结；随炉冷却，得到所需块体样品；S4、除去样品表面的石墨纸，对块体样品表面进行研磨、抛光、刻蚀等处理后。本发明表面高硬度、整体高强度，在抗冲击防护领域发挥重要作用；可应用于新能源汽车领域的电机轴承，密度更低耐磨性更高。
Preparation method of superhard high-strength bionic laminated diamond-B4C-SiC/Si3N4-SiC ceramic composite material
超硬高强的仿生叠层金刚石-B4C-SiC/Si3N4-SiC陶瓷复合材料制备方法
XIE JINGJING (Autor:in) / WEI XIAODI (Autor:in) / YANG YUFEI (Autor:in) / DAI DIANYU (Autor:in) / WANG WEIMIN (Autor:in) / FU ZHENGYI (Autor:in)
02.07.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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