Cold spray and presureless sintering of zirconium phosphate bonded silicon nitride ceramics with porous gradient structure
Cold spray and presureless sintering of zirconium phosphate bonded silicon nitride ceramics with porous gradient structure
复制标题
多孔梯度结构磷酸锆结合氮化硅陶瓷的冷喷涂及无压烧结
DOI：
10.1088/1742-6596/419/1/012006
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Lianmeng Zhang
中科院分区：
文献类型：
--
作者：
Fei Chen;Feiyue Li;Q. Shen;Lianmeng Zhang
采用冷喷涂无压烧结技术制备了具有高孔隙率和多孔梯度结构的氮化硅（Si 3 N4）透波陶瓷。采用磷酸锆溶液代替传统的有机材料作为粘结剂，以防止残余碳对Si 3 N4多孔陶瓷介电性能的严重影响。首先制备了不同磷酸和造孔剂含量的氮化硅陶瓷浆料。然后将Si 3 N4浆料逐层冷喷涂以获得多孔梯度结构，最后将样品在氮气气氛中在1000 °C下无压烧结。结果表明，所制备的Si 3 N4陶瓷的孔隙率为20~ 70%，从高孔隙率到低孔隙率呈现良好的多孔梯度结构。
In the present study, silicon nitride (Si3N4) electromagnetic wave transparent ceramics with high porosity and porous gradient structure are prepared by cold spray and pressureless sintering technique. Zirconium phosphate solution is used as a binder material instead of the traditional organic materials, in order to prevent the residual carbon which is severe to the dielectric properties of the Si3N4 porous ceramics. Firstly, Si3N4 ceramic slurries with different phosphorus acid and pore-forming agent contents are prepared. Then the Si3N4 slurries are cold sprayed layer by layer to achieve a porous gradient structure, and finally the samples are presurelessly sintered at 1000 °C in a nitrogen atmosphere. The results show that the porosity of the obtained Si3N4 ceramics is 20~70 % and the Si3N4 ceramics exhibits a good porous graded structure from high to low porosity.
影响因子：
5.7
作者：
Chun-Hong Chen;K. Takita;Sawao Honda;H. Awaji
通讯作者：
Chun-Hong Chen;K. Takita;Sawao Honda;H. Awaji