MECHANICAL-PROPERTIES IN THE INITIAL-STAGE OF SINTERING
MECHANICAL-PROPERTIES IN THE INITIAL-STAGE OF SINTERING
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DOI：
10.1007/bf00351623
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发表时间：
1995-04-01
影响因子：
4.5
通讯作者：
WEBER, F
中科院分区：
文献类型：
--
作者：
ARATO, P;BESENYEI, E;WEBER, F
在理论致密度的60%~ 90%范围内烧结了不同成分的氮化硅基陶瓷。观察到表观密度与弹性模量、三点和四点弯曲强度或维氏硬度之间的线性相关性。对于所有组合物，直线的斜率几乎相同。此外，弹性模量，硬度，断裂韧性和强度作为密度的函数通过模拟的结构作为一个随机排列的球体，建议由Fischmeister和Arzt计算。所得关系与实测值进行了比较。
Silicon nitride-based ceramics with different compositions were sintered in the 60%-90% range of theoretical density. Linear correlations between the apparent density and the modulus of elasticity, the three- and four-point bend strengths or the Vickers hardness, were observed. The slopes of the straight lines were nearly the same for all compositions. Furthermore, the modulus of elasticity, hardness, fracture toughness and strength were calculated as functions of density by modelling the structure as a random arrangement of spheres as suggested by Fischmeister and Arzt. The relationships obtained have been compared with the measured ones.