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Preparation method of pressureless sintering extrusion type silicon carbide ceramic
The invention relates to the technical field of silicon carbide ceramics, in particular to a preparation method of pressureless sintering extrusion type silicon carbide ceramics, which comprises the following steps: putting deionized water, silicon carbide micro powder, hexagonal boron nitride, aggregate, graphite, a dispersing agent, a sintering aid and a binder into a stirring kettle; vacuumizing with a vacuum pump, and mixing and stirring to obtain slurry; filtering the slurry, and preparing granulated micro powder through a spray drying method; preparing the granulated micro powder into a green body through a powder extrusion printing technology; feeding the green body into drying equipment for drying; the dried green body is wrapped with a layer of graphite felt, and the green body and the graphite felt are sent into a sintering furnace; and after sintering, cooling to room temperature to obtain the silicon carbide ceramic product. According to the method, the pressureless sintering technology is adopted, external pressure does not need to be applied, and the production cost and the equipment complexity are reduced; the green body is prepared through the powder extrusion printing technology, and the precision and shape complexity of the product are improved.
本发明涉及碳化硅陶瓷技术领域，尤其是一种无压烧结挤出型碳化硅陶瓷的制备方法，包括：将去离子水、碳化硅微粉、六方氮化硼、骨料、石墨、分散剂、烧结助剂以及粘结剂投入搅拌釜中；用真空泵抽真空，混合搅拌得到浆料；对浆料进行过滤，通过喷雾干燥法制成造粒微粉；将造粒微粉通过粉末挤出打印技术制成坯体；将坯体送入干燥设备中进行干燥；干燥后的坯体裹覆一层石墨毡，并一同送入烧结炉；烧结结束后，冷却至室温，得到碳化硅陶瓷制品。该方法采用无压烧结技术，无需施加外部压力，降低了生产成本和设备复杂度；通过粉末挤出打印技术制备坯体，提高了制品的精度和形状复杂度。
Preparation method of pressureless sintering extrusion type silicon carbide ceramic
The invention relates to the technical field of silicon carbide ceramics, in particular to a preparation method of pressureless sintering extrusion type silicon carbide ceramics, which comprises the following steps: putting deionized water, silicon carbide micro powder, hexagonal boron nitride, aggregate, graphite, a dispersing agent, a sintering aid and a binder into a stirring kettle; vacuumizing with a vacuum pump, and mixing and stirring to obtain slurry; filtering the slurry, and preparing granulated micro powder through a spray drying method; preparing the granulated micro powder into a green body through a powder extrusion printing technology; feeding the green body into drying equipment for drying; the dried green body is wrapped with a layer of graphite felt, and the green body and the graphite felt are sent into a sintering furnace; and after sintering, cooling to room temperature to obtain the silicon carbide ceramic product. According to the method, the pressureless sintering technology is adopted, external pressure does not need to be applied, and the production cost and the equipment complexity are reduced; the green body is prepared through the powder extrusion printing technology, and the precision and shape complexity of the product are improved.
本发明涉及碳化硅陶瓷技术领域，尤其是一种无压烧结挤出型碳化硅陶瓷的制备方法，包括：将去离子水、碳化硅微粉、六方氮化硼、骨料、石墨、分散剂、烧结助剂以及粘结剂投入搅拌釜中；用真空泵抽真空，混合搅拌得到浆料；对浆料进行过滤，通过喷雾干燥法制成造粒微粉；将造粒微粉通过粉末挤出打印技术制成坯体；将坯体送入干燥设备中进行干燥；干燥后的坯体裹覆一层石墨毡，并一同送入烧结炉；烧结结束后，冷却至室温，得到碳化硅陶瓷制品。该方法采用无压烧结技术，无需施加外部压力，降低了生产成本和设备复杂度；通过粉末挤出打印技术制备坯体，提高了制品的精度和形状复杂度。
Preparation method of pressureless sintering extrusion type silicon carbide ceramic
一种无压烧结挤出型碳化硅陶瓷的制备方法
WANG DONG (Autor:in) / GUO HUANJUN (Autor:in) / LI WEIQIANG (Autor:in) / WANG QIANG (Autor:in) / SUN WEIKANG (Autor:in) / YIN DONGSHENG (Autor:in) / LIU AIWEI (Autor:in)
24.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
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