Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ceramic material with low-temperature crack healing capability and preparation method thereof
The invention discloses a ceramic material with low-temperature crack healing capability and a preparation method of the ceramic material. The ceramic material comprises the following components in percentage by mass: 60-80% of a mixture of SiC and Al2O3, 10-20% of TiB2 and 10-20% of a fluxing agent, The preparation method comprises the following steps: weighing SiC, Al2O3, TiB2 and a cosolvent in proportion, adding a solvent, and carrying out wet ball milling for 5-7 hours to obtain a ball milling solution; carrying out vacuum drying on the obtained ball-milling liquid, and sieving the ball-milling liquid through a 100-to-120-mesh sieve to obtain mixed powder; and putting the obtained mixed powder into a mold, carrying out cold press molding, and then putting the molded powder into a spark plasma sintering furnace for spark plasma sintering or into a hot pressing furnace for hot pressing sintering. According to the invention, TiB2 is added into a ceramic material matrix to realize the function of material crack healing, the adopted healing agent TiB2 can react with oxygen at a low temperature to generate TiO2 and B2O3 capable of healing cracks, and bending strength can be recovered to 80% or more within a short time, so the service life of the ceramic material is prolonged; and the added glass powder can also reduce sintering temperature.
本发明公开了一种具有低温愈合裂纹能力的陶瓷材料及其制备方法，组成按质量百分数计如下：SiC和Al2O3的混合物：60～80％，TiB2：10～20％，助熔剂：10～20％；按比例称取SiC、Al2O3、TiB2和助溶剂，加入溶剂，湿法球磨5～7h得到球磨液；所得球磨液真空干燥后经100～120目筛过筛，得到混合粉料；所得混合粉料装入模具中，经冷压成型后放入放电等离子烧结炉中进行放电等离子烧结或热压炉中热压烧结；本发明通过在陶瓷材料基体中添加TiB2来实现材料裂纹愈合的功能，采用的愈合剂TiB2在较低温度下便可以与氧气发生反应生成可以愈合裂纹的TiO2和B2O3，在较短的时间内抗弯强度可以恢复到的80％以上，提高了陶瓷材料的使用寿命，加入的玻璃粉也可以降低烧结温度。
Ceramic material with low-temperature crack healing capability and preparation method thereof
The invention discloses a ceramic material with low-temperature crack healing capability and a preparation method of the ceramic material. The ceramic material comprises the following components in percentage by mass: 60-80% of a mixture of SiC and Al2O3, 10-20% of TiB2 and 10-20% of a fluxing agent, The preparation method comprises the following steps: weighing SiC, Al2O3, TiB2 and a cosolvent in proportion, adding a solvent, and carrying out wet ball milling for 5-7 hours to obtain a ball milling solution; carrying out vacuum drying on the obtained ball-milling liquid, and sieving the ball-milling liquid through a 100-to-120-mesh sieve to obtain mixed powder; and putting the obtained mixed powder into a mold, carrying out cold press molding, and then putting the molded powder into a spark plasma sintering furnace for spark plasma sintering or into a hot pressing furnace for hot pressing sintering. According to the invention, TiB2 is added into a ceramic material matrix to realize the function of material crack healing, the adopted healing agent TiB2 can react with oxygen at a low temperature to generate TiO2 and B2O3 capable of healing cracks, and bending strength can be recovered to 80% or more within a short time, so the service life of the ceramic material is prolonged; and the added glass powder can also reduce sintering temperature.
本发明公开了一种具有低温愈合裂纹能力的陶瓷材料及其制备方法，组成按质量百分数计如下：SiC和Al2O3的混合物：60～80％，TiB2：10～20％，助熔剂：10～20％；按比例称取SiC、Al2O3、TiB2和助溶剂，加入溶剂，湿法球磨5～7h得到球磨液；所得球磨液真空干燥后经100～120目筛过筛，得到混合粉料；所得混合粉料装入模具中，经冷压成型后放入放电等离子烧结炉中进行放电等离子烧结或热压炉中热压烧结；本发明通过在陶瓷材料基体中添加TiB2来实现材料裂纹愈合的功能，采用的愈合剂TiB2在较低温度下便可以与氧气发生反应生成可以愈合裂纹的TiO2和B2O3，在较短的时间内抗弯强度可以恢复到的80％以上，提高了陶瓷材料的使用寿命，加入的玻璃粉也可以降低烧结温度。
Ceramic material with low-temperature crack healing capability and preparation method thereof
一种具有低温愈合裂纹能力的陶瓷材料及其制备方法
CAI HAOPENG (Autor:in) / WANG BAOGUO (Autor:in) / WEI YINGLONG (Autor:in)
01.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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