Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Degreasing and sintering method of silicon nitride ceramic powder product
The invention relates to a degreasing and sintering method of a silicon nitride ceramic powder product, which comprises the following steps: powder preparation: mixing silicon nitride ceramic powder and a sintering aid according to a ratio to obtain mixed silicon nitride ceramic powder for printing molding; printing and forming: printing the mixed silicon nitride ceramic powder to form a silicon nitride product (a silicon nitride green body) by adopting a bonding jet printing mode; curing and powder removal: curing the printed and molded silicon nitride product and removing floating powder; degreasing and presintering: putting the cured silicon nitride product into a vacuum degreasing sintering furnace, and introducing argon; raising the temperature to 400-600 DEG C at the temperature raising rate of 0.5-5 DEG C/min, and keeping the temperature for 1-5 Raising the temperature to 800-900 DEG C at the temperature raising rate of 0.5-3 DEG C/min, and keeping the temperature for 1-5 Cooling along with the furnace to obtain a degreased blank; sintering: putting the degreased blank into a nitrogen atmosphere furnace, and raising the temperature to 900 DEG C at the rate of 5 DEG C/min; the temperature is raised to 1600-1800 DEG C at the speed of 2 DEG C/min; the temperature is raised to 1700-1900 DEG C at the speed of 0.5 DEG C/min; and keeping the temperature for 2-3 hours under the condition that the nitrogen pressure is 1-10 MPa to obtain a sintered body.
一种氮化硅陶瓷粉末制品的脱脂烧结方法，粉末配置：将氮化硅陶瓷粉末和烧结助剂按照比例配置混合，得到用于打印成型的混合氮化硅陶瓷粉末；打印成型：采用粘结喷射打印的方式，将混合后的氮化硅陶瓷粉末打印形成氮化硅制品(氮化硅生胚)；固化清粉：将打印成型的氮化硅制品进行固化并清除浮粉；脱脂预烧结：将固化后的氮化硅制品放入真空脱脂烧结炉并通入氩气；以0.5～5℃/min的升温速率升温至400～600℃，保温1～5h；以0.5～3℃/min的升温速率升温至800～900℃，保温1～5h；随炉降温得到脱脂胚体；烧结：将脱脂胚体放入氮气气氛炉中，以5℃/min的速率升温至900℃；以2℃/min的速率升温至1600～1800℃；以0.5℃/min的速率升温至1700～1900℃；在氮气压力为1～10MPa的条件下保温2～3h，获得烧结体。
Degreasing and sintering method of silicon nitride ceramic powder product
The invention relates to a degreasing and sintering method of a silicon nitride ceramic powder product, which comprises the following steps: powder preparation: mixing silicon nitride ceramic powder and a sintering aid according to a ratio to obtain mixed silicon nitride ceramic powder for printing molding; printing and forming: printing the mixed silicon nitride ceramic powder to form a silicon nitride product (a silicon nitride green body) by adopting a bonding jet printing mode; curing and powder removal: curing the printed and molded silicon nitride product and removing floating powder; degreasing and presintering: putting the cured silicon nitride product into a vacuum degreasing sintering furnace, and introducing argon; raising the temperature to 400-600 DEG C at the temperature raising rate of 0.5-5 DEG C/min, and keeping the temperature for 1-5 Raising the temperature to 800-900 DEG C at the temperature raising rate of 0.5-3 DEG C/min, and keeping the temperature for 1-5 Cooling along with the furnace to obtain a degreased blank; sintering: putting the degreased blank into a nitrogen atmosphere furnace, and raising the temperature to 900 DEG C at the rate of 5 DEG C/min; the temperature is raised to 1600-1800 DEG C at the speed of 2 DEG C/min; the temperature is raised to 1700-1900 DEG C at the speed of 0.5 DEG C/min; and keeping the temperature for 2-3 hours under the condition that the nitrogen pressure is 1-10 MPa to obtain a sintered body.
一种氮化硅陶瓷粉末制品的脱脂烧结方法，粉末配置：将氮化硅陶瓷粉末和烧结助剂按照比例配置混合，得到用于打印成型的混合氮化硅陶瓷粉末；打印成型：采用粘结喷射打印的方式，将混合后的氮化硅陶瓷粉末打印形成氮化硅制品(氮化硅生胚)；固化清粉：将打印成型的氮化硅制品进行固化并清除浮粉；脱脂预烧结：将固化后的氮化硅制品放入真空脱脂烧结炉并通入氩气；以0.5～5℃/min的升温速率升温至400～600℃，保温1～5h；以0.5～3℃/min的升温速率升温至800～900℃，保温1～5h；随炉降温得到脱脂胚体；烧结：将脱脂胚体放入氮气气氛炉中，以5℃/min的速率升温至900℃；以2℃/min的速率升温至1600～1800℃；以0.5℃/min的速率升温至1700～1900℃；在氮气压力为1～10MPa的条件下保温2～3h，获得烧结体。
Degreasing and sintering method of silicon nitride ceramic powder product
一种氮化硅陶瓷粉末制品的脱脂烧结方法
WANG YONG (Autor:in) / ZHANG LONGJIANG (Autor:in) / CAO JIWEI (Autor:in) / CHEN WEIDONG (Autor:in) / LIU YUQING (Autor:in) / LUO KAI (Autor:in)
04.08.2023
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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