Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of ZTA/high-chromium cast iron composite wear-resistant material
The invention discloses a preparation method of a ZTA/high-chromium cast iron composite wear-resistant material. The method comprises the following steps: respectively mixing ZTA ceramic particles with B4C, Ti or Ni powder by using a three-dimensional vibration powder mixer; adding a binder PVA and a pore-forming agent EPS, and performing compression molding in a steel mold; putting a blank obtained through compression molding into a vacuum sintering furnace to be sintered; cooling the green body to room temperature along with the furnace to obtain a ZTA ceramic green body with a porous structure and certain strength; and putting the ZTA ceramic green body into a crucible, putting a high-chromium cast iron block on the ZTA ceramic green body, putting the crucible into a vacuum sintering furnace for sintering, and cooling the green body to room temperature along with the furnace to obtain the ZTA/high-chromium cast iron composite material. The reinforced phase ZTA ceramic is added into the traditional high-chromium cast iron, wherein the reinforced phase ZTA ceramic and the traditional high-chromium cast iron are tightly combined, and an obvious interface transition layer is formed; therefore, the hardness and the wear resistance of a traditional high-chromium cast iron wear-resistant material are further improved under the condition that the toughness is not reduced, and the composite material can better adapt to working conditions.
本发明公开了一种ZTA/高铬铸铁复合耐磨材料的制备方法，先将ZTA陶瓷颗粒分别与B4C、Ti或Ni粉末用三维震动混粉机进行混粉，加入粘结剂PVA与造孔剂EPS后在钢模中压制成型，将压制成型得到的坯体放入真空烧结炉中烧结，随炉冷却至室温得到多孔状结构、自身具有一定强度的ZTA陶瓷坯体；将ZTA陶瓷坯体放入坩埚中，上面再放置高铬铸铁块，将坩埚放入真空烧结炉中烧结，随炉冷却至室温得到ZTA/高铬铸铁复合材料。本发明在传统的高铬铸铁中加入增强相ZTA陶瓷，两者结合紧密，有明显的界面过渡层；使传统的高铬铸铁耐磨材料在韧性不降低的情况下进一步提高了硬度和耐磨性，该复合材料能更好的适应工况。
Preparation method of ZTA/high-chromium cast iron composite wear-resistant material
The invention discloses a preparation method of a ZTA/high-chromium cast iron composite wear-resistant material. The method comprises the following steps: respectively mixing ZTA ceramic particles with B4C, Ti or Ni powder by using a three-dimensional vibration powder mixer; adding a binder PVA and a pore-forming agent EPS, and performing compression molding in a steel mold; putting a blank obtained through compression molding into a vacuum sintering furnace to be sintered; cooling the green body to room temperature along with the furnace to obtain a ZTA ceramic green body with a porous structure and certain strength; and putting the ZTA ceramic green body into a crucible, putting a high-chromium cast iron block on the ZTA ceramic green body, putting the crucible into a vacuum sintering furnace for sintering, and cooling the green body to room temperature along with the furnace to obtain the ZTA/high-chromium cast iron composite material. The reinforced phase ZTA ceramic is added into the traditional high-chromium cast iron, wherein the reinforced phase ZTA ceramic and the traditional high-chromium cast iron are tightly combined, and an obvious interface transition layer is formed; therefore, the hardness and the wear resistance of a traditional high-chromium cast iron wear-resistant material are further improved under the condition that the toughness is not reduced, and the composite material can better adapt to working conditions.
本发明公开了一种ZTA/高铬铸铁复合耐磨材料的制备方法，先将ZTA陶瓷颗粒分别与B4C、Ti或Ni粉末用三维震动混粉机进行混粉，加入粘结剂PVA与造孔剂EPS后在钢模中压制成型，将压制成型得到的坯体放入真空烧结炉中烧结，随炉冷却至室温得到多孔状结构、自身具有一定强度的ZTA陶瓷坯体；将ZTA陶瓷坯体放入坩埚中，上面再放置高铬铸铁块，将坩埚放入真空烧结炉中烧结，随炉冷却至室温得到ZTA/高铬铸铁复合材料。本发明在传统的高铬铸铁中加入增强相ZTA陶瓷，两者结合紧密，有明显的界面过渡层；使传统的高铬铸铁耐磨材料在韧性不降低的情况下进一步提高了硬度和耐磨性，该复合材料能更好的适应工况。
Preparation method of ZTA/high-chromium cast iron composite wear-resistant material
一种ZTA/高铬铸铁复合耐磨材料的制备方法
LYU ZHENLIN (Autor:in) / GAO QUAN (Autor:in) / JIA LEI (Autor:in) / QIAN JIN (Autor:in)
24.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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