Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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High-pressure preparation method of high-density ZrB2-based ultrahigh-temperature ceramic
The invention discloses a high-pressure preparation method of high-density ZrB2-based ultra-high-temperature ceramic, and belongs to the field of ultra-high-temperature ceramic materials. The invention particularly relates to the structure and the ablation resistance of the ultrahigh-temperature ceramic material. The preparation method comprises the following steps: weighing and mixing ZrB2 powder and metal carbide powder according to a molar ratio of (1: 1)-(20: 1); the preparation method comprises the following steps: carrying out particle refinement on raw materials through a wet grinding method, carrying out centrifugation, drying and compression molding on wet-ground slurry, and carrying out sintering densification under a high-pressure condition at the sintering pressure of 2-4GPa and the sintering temperature of 750-950 DEG C to finally prepare the high-density ZrB2-ZrC ultrahigh-temperature ceramic material. The high-pressure preparation method of the ZrB2-based ultra-high-temperature ceramic has the advantages of simple and efficient process, the sintering temperature of the material can be remarkably reduced, and the time required by high temperature in the preparation process is shortened. The density of the ceramic material is effectively improved, and the thermal ablation resistance of the ultrahigh-temperature ceramic is improved.
一种高致密ZrB2基超高温陶瓷的高压制备方法，属于超高温陶瓷材料领域。特别涉及到超高温陶瓷材料的结构和抗烧蚀性能。本发明将ZrB2粉末和金属碳化物粉末分别按摩尔比为1:1～20:1进行称量混料；通过湿磨法对原料进行颗粒细化，将湿磨的浆料进行离心、干燥和模压成型，并在高压条件下进行烧结致密化，烧结压力为2～4GPa，烧结温度为750～950℃，最终制备出高致密ZrB2‑ZrC超高温陶瓷材料。本发明提出的ZrB2基超高温陶瓷的高压制备方法具有工艺简便、高效的优点，能够显著降低材料的烧结温度，减少制备工艺中高温所需的时间。有效提升陶瓷材料的致密度，提高超高温陶瓷的抗热烧蚀性能。
High-pressure preparation method of high-density ZrB2-based ultrahigh-temperature ceramic
The invention discloses a high-pressure preparation method of high-density ZrB2-based ultra-high-temperature ceramic, and belongs to the field of ultra-high-temperature ceramic materials. The invention particularly relates to the structure and the ablation resistance of the ultrahigh-temperature ceramic material. The preparation method comprises the following steps: weighing and mixing ZrB2 powder and metal carbide powder according to a molar ratio of (1: 1)-(20: 1); the preparation method comprises the following steps: carrying out particle refinement on raw materials through a wet grinding method, carrying out centrifugation, drying and compression molding on wet-ground slurry, and carrying out sintering densification under a high-pressure condition at the sintering pressure of 2-4GPa and the sintering temperature of 750-950 DEG C to finally prepare the high-density ZrB2-ZrC ultrahigh-temperature ceramic material. The high-pressure preparation method of the ZrB2-based ultra-high-temperature ceramic has the advantages of simple and efficient process, the sintering temperature of the material can be remarkably reduced, and the time required by high temperature in the preparation process is shortened. The density of the ceramic material is effectively improved, and the thermal ablation resistance of the ultrahigh-temperature ceramic is improved.
一种高致密ZrB2基超高温陶瓷的高压制备方法，属于超高温陶瓷材料领域。特别涉及到超高温陶瓷材料的结构和抗烧蚀性能。本发明将ZrB2粉末和金属碳化物粉末分别按摩尔比为1:1～20:1进行称量混料；通过湿磨法对原料进行颗粒细化，将湿磨的浆料进行离心、干燥和模压成型，并在高压条件下进行烧结致密化，烧结压力为2～4GPa，烧结温度为750～950℃，最终制备出高致密ZrB2‑ZrC超高温陶瓷材料。本发明提出的ZrB2基超高温陶瓷的高压制备方法具有工艺简便、高效的优点，能够显著降低材料的烧结温度，减少制备工艺中高温所需的时间。有效提升陶瓷材料的致密度，提高超高温陶瓷的抗热烧蚀性能。
High-pressure preparation method of high-density ZrB2-based ultrahigh-temperature ceramic
一种高致密ZrB2基超高温陶瓷的高压制备方法
DING ZHANHUI (Autor:in) / YANG JING (Autor:in) / LI YONGFENG (Autor:in) / YAO BIN (Autor:in)
25.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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