Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ZrB2 nano-powder reinforced silicon oxide-based ceramic core and preparation method thereof
The invention provides a ZrB2 nano-powder reinforced silicon oxide-based ceramic core which is prepared from ceramic powder and a plasticizer, and the plasticizer accounts for 20% of the total weightof the ceramic powder. The ceramic powder is prepared from the following raw materials in percentage by weight: 85%-90% of quartz glass powder, 4%-9% of mullite powder, 2%-8% of ZrB2 powder and 0.5%-3% of cristobalite powder. ZrB2 is introduced into the ceramic core, ZrB2 is oxidized to form ZrO2 and B2O3 in the roasting process, the introduction of ZrO2 can improve the bending strength and high-temperature deformation quantity of the ceramic core, liquid-phase B2O3 formed in the roasting process can reduce the roasting temperature of the ceramic core, conversion of a large amount of cristobalite in the roasting process is reduced, and then microcracks of the ceramic core are reduced.
本发明提供了一种ZrB2纳米粉体增强氧化硅基陶瓷型芯，由陶瓷粉体和增塑剂制成，其中，增塑剂占陶瓷粉体总重量20％；所述陶瓷粉体由包括如下重量百分比的原料组成：石英玻璃粉为85％‑90％，莫来石粉为4％‑9％，ZrB2粉体为2％‑8％，方石英粉为0.5％‑3％。本发明将ZrB2引入到陶瓷型芯中，在焙烧过程中ZrB2被氧化形成ZrO2和B2O3，ZrO2的引入能够改善陶瓷型芯的抗弯强度及高温形变量，焙烧过程中形成的液相B2O3能降低陶瓷型芯的焙烧温度，减少焙烧过程中大量方石英的转变，进而减少陶瓷型芯微裂纹的发生。
ZrB2 nano-powder reinforced silicon oxide-based ceramic core and preparation method thereof
The invention provides a ZrB2 nano-powder reinforced silicon oxide-based ceramic core which is prepared from ceramic powder and a plasticizer, and the plasticizer accounts for 20% of the total weightof the ceramic powder. The ceramic powder is prepared from the following raw materials in percentage by weight: 85%-90% of quartz glass powder, 4%-9% of mullite powder, 2%-8% of ZrB2 powder and 0.5%-3% of cristobalite powder. ZrB2 is introduced into the ceramic core, ZrB2 is oxidized to form ZrO2 and B2O3 in the roasting process, the introduction of ZrO2 can improve the bending strength and high-temperature deformation quantity of the ceramic core, liquid-phase B2O3 formed in the roasting process can reduce the roasting temperature of the ceramic core, conversion of a large amount of cristobalite in the roasting process is reduced, and then microcracks of the ceramic core are reduced.
本发明提供了一种ZrB2纳米粉体增强氧化硅基陶瓷型芯，由陶瓷粉体和增塑剂制成，其中，增塑剂占陶瓷粉体总重量20％；所述陶瓷粉体由包括如下重量百分比的原料组成：石英玻璃粉为85％‑90％，莫来石粉为4％‑9％，ZrB2粉体为2％‑8％，方石英粉为0.5％‑3％。本发明将ZrB2引入到陶瓷型芯中，在焙烧过程中ZrB2被氧化形成ZrO2和B2O3，ZrO2的引入能够改善陶瓷型芯的抗弯强度及高温形变量，焙烧过程中形成的液相B2O3能降低陶瓷型芯的焙烧温度，减少焙烧过程中大量方石英的转变，进而减少陶瓷型芯微裂纹的发生。
ZrB2 nano-powder reinforced silicon oxide-based ceramic core and preparation method thereof
一种ZrB2纳米粉体增强氧化硅基陶瓷型芯及其制备方法
LI MINMIN (Autor:in) / FAN HONGNA (Autor:in) / QI CHANGJIAN (Autor:in) / SONG ZHUO (Autor:in) / LIU PU (Autor:in)
23.02.2021
Patent
Elektronische Ressource
Chinesisch
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