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Preparation method of alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material
The invention provides an alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material. The alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material is prepared by the following steps: preparation of modified alumina fiber cloth, dipping, pressing and sintering, gap filling and reinforcement. The invention also provides the alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material prepared by the method. The modified alumina fiber cloth layer is arranged in the silicon carbide ceramic material, the contact area between the alumina fiber cloth layer deposited with zirconium hydrogen phosphate on the fiber cloth layer and silicon carbide is greatly increased, the material strength is improved, the material toughness is improved, and meanwhile, the silicon carbide is doped with materials such as graphite powder, so that the service life of the silicon carbide ceramic material is prolonged. The borosilicate glass is formed, the boric acid saturated alcohol solution and the ethyl silicate hydrolysate are used for filling the internal gaps of the silicon carbide ceramic, and the borosilicate glass not only can play a role in filling, but also can play a role in heat storage as a phase change material, slows down the rapid change of the ceramic material during high-temperature application, and prolongs the service life of the ceramic material.
本发明提供氧化铝纤维增强硼硅酸盐掺杂碳化硅陶瓷复合材料，包括以下步骤：改性氧化铝纤维布的制备，浸渍、压制和烧结，空隙填充，增强。本发明还提供了上述方法制得的氧化铝纤维增强硼硅酸盐掺杂碳化硅陶瓷复合材料。本发明提供了碳化硅陶瓷材料内部设有改性氧化铝纤维布层，同时在纤维布层上沉积磷酸氢锆氧化铝纤维布层与碳化硅的接触面积大大提高，不仅提高了材料强度，而且提高了材料韧性，同时在碳化硅内掺杂石墨粉末等材料，形成硼硅酸盐玻璃，并利用硼酸饱和醇溶液、硅酸乙酯水解液填充于碳化硅陶瓷内部空隙中，硼硅酸盐玻璃不仅可起到填充作用，而且为相变材料，可起到储热作用，减缓陶瓷材料高温应用时急剧变化，提高其应用寿命。
Preparation method of alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material
The invention provides an alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material. The alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material is prepared by the following steps: preparation of modified alumina fiber cloth, dipping, pressing and sintering, gap filling and reinforcement. The invention also provides the alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material prepared by the method. The modified alumina fiber cloth layer is arranged in the silicon carbide ceramic material, the contact area between the alumina fiber cloth layer deposited with zirconium hydrogen phosphate on the fiber cloth layer and silicon carbide is greatly increased, the material strength is improved, the material toughness is improved, and meanwhile, the silicon carbide is doped with materials such as graphite powder, so that the service life of the silicon carbide ceramic material is prolonged. The borosilicate glass is formed, the boric acid saturated alcohol solution and the ethyl silicate hydrolysate are used for filling the internal gaps of the silicon carbide ceramic, and the borosilicate glass not only can play a role in filling, but also can play a role in heat storage as a phase change material, slows down the rapid change of the ceramic material during high-temperature application, and prolongs the service life of the ceramic material.
本发明提供氧化铝纤维增强硼硅酸盐掺杂碳化硅陶瓷复合材料，包括以下步骤：改性氧化铝纤维布的制备，浸渍、压制和烧结，空隙填充，增强。本发明还提供了上述方法制得的氧化铝纤维增强硼硅酸盐掺杂碳化硅陶瓷复合材料。本发明提供了碳化硅陶瓷材料内部设有改性氧化铝纤维布层，同时在纤维布层上沉积磷酸氢锆氧化铝纤维布层与碳化硅的接触面积大大提高，不仅提高了材料强度，而且提高了材料韧性，同时在碳化硅内掺杂石墨粉末等材料，形成硼硅酸盐玻璃，并利用硼酸饱和醇溶液、硅酸乙酯水解液填充于碳化硅陶瓷内部空隙中，硼硅酸盐玻璃不仅可起到填充作用，而且为相变材料，可起到储热作用，减缓陶瓷材料高温应用时急剧变化，提高其应用寿命。
Preparation method of alumina fiber reinforced borosilicate doped silicon carbide ceramic composite material
氧化铝纤维增强硼硅酸盐掺杂碳化硅陶瓷复合材料的制备方法
WU DI (Autor:in) / HOU ZHENHUA (Autor:in)
13.05.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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