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    题名 作者 年代 出处 被引量
1ZnO及填料对磷酸铬铝基复合材料性能的影响显示文摘以磷酸铬铝(ACP)为基体,高硅氧纤维布为增强材料,Cr2O3和Al2O3为填料,通过热压成型制得磷酸铬铝基复合材料。采用TG-DSC和XRD等探讨了磷酸铬铝基体的固化特性和耐热性能,并研究了复合填料、纳米填料及热压工艺对材料力学性能的影响。结果表明,ZnO可以降低磷酸铬铝的固化温度并促进其晶型转变;复合填料Cr2O3和Al2O3可以提高材料的耐热性,当Cr2O3和Al2O3之比为7∶3且纳米Cr2O3加入量为5%时,复合材料的力学性能最好,其拉伸强度为95.2MPa,弯曲强度为190.02MPa。田帅 霍冀川 雷永林 陈宁 2013功能材料2013,44,7:6
2Direct ink writing of continuous SiO2 fiber reinforced wave-transparent ceramics显示文摘This article reports the first example of 3D printed continuous SiO2 fiber reinforced wave-transparent ceramic composites via an adaptation of direct ink writing technology to improve the mechanical and dielectric properties of ceramics.The ceramic inks showed good printability by adding nano-SiO2 powder.The effective continuous fiber-reinforced printing progress was achieved through the design and optimization of the coaxial needle structures by finite element simulation.After printing,the continuous fibers were evenly and continuously distributed in the matrix ceramics and the high molding precision for fiber reinforced composite was kept.It is demonstrated that 10 vol%continuous SiO2 fiber improved the bending strength of ceramics by about 27%better than that of the ceramics without fiber and the dielectric performance has also been greatly improved.The novel method unravels the potential of direct ink writing of continuous fiber reinforced wave-transparent ceramics with complex structures and improved properties.Zhe Zhao Guoxiang Zhou Zhihua Yang Xianqi Cao Dechang Jia Yu Zhou 2020Journal of Advanced Ceramics2020,9,4:4
3Mg_2(OH)_2CO_3·3H_2O Whiskers Growth Mechanism显示文摘From the perspective of growth units, the growth mechanism of Mg_2(OH)_2CO_3·3H_2O whisker is investigated in this paper. Results show that the growth morphology of Mg_2(OH)_2CO_3·3H_2O whisker is consistent with the model of anion coordination polyhedron growth units. The growth solution Raman shift of Mg_2(OH)_2CO_3·3H_2O was monitored using Raman spectroscopy. The growth units are [Mg-(OH)_4]_2- and H_2CO_3. The growth process of Mg_2(OH)_2CO_3·3H_2O whisker is as follows: growth unit [Mg-(OH)_4]_2- first incorporates into the larger dimension [Mg-(OH)_4]2-n, then the [Mg-(OH)_4]2-n combines with H_2CO_3 into a linear skeleton Mg2(OH)2CO3 in the same line. Mg_2(OH)_2CO_3 combines with H_2O by hydrogen bonds and ultimately transforms into Mg_2(OH)_2CO_3·3H_2O whisker. Magnesium carbonate whiskers have a layered structure, each of which is made of magnesium, carbon, oxygen, with H_2O in between each layer. When skeletons are superimposed within the same plane as a parallelepiped one, they grow into solid cuboid-shaped whiskers. When the parallelepiped skeletons planes combine with each other through the cascading links, they grow into hollow cylindrical whiskers.吴健松 高义民 2016Journal of Wuhan University of Technology(Materials Science)2016,31,3:0
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