Rigidity of diamond reinforced metals featuring high particle contents
Rigidity of diamond reinforced metals featuring high particle contents
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DOI：
10.1016/j.compscitech.2009.03.016
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发表时间：
2009-08
影响因子：
9.1
通讯作者：
K. Weidenmann;R. Tavangar;L. Weber
中科院分区：
文献类型：
--
作者：
K. Weidenmann;R. Tavangar;L. Weber
以Ag-3wt%Si和Al-2wt%Cu为基体，采用气压辅助液态金属浸渗法制备了金刚石含量为57 ~ 72vol%的金刚石/金属复合材料。Ag-3Si和Al-2Cu基复合材料的杨氏模量分别为300 ~ 425 GPa和245 ~ 370 GPa。实验杨氏模量进行了比较Mori-Tanaka平均场方案（MTM），广义自洽方案（GSCS），双峰硬球模型（TBHS），和微分有效介质方案（DEM）。在调查的体积分数的下端，GSCS，TBHS和DEM的预测是非常接近彼此和实验结果，而MTM明显较低。随着体积分数的增加，模型之间的差异突出，高达72vol%的金刚石的数据最好由DEM描述。
Diamond/metal composites with diamond contents between 57 and 72vol% have been produced by gas pressure assisted liquid metal infiltration using Ag–3wt% Si and Al–2wt% Cu as matrix. The experimental data cover a range of Young’s moduli from 300 to 425GPa and 245 to 370GPa for the Ag–3Si and the Al–2Cu-based composites, respectively. Experimental Young’s moduli are compared to the Mori–Tanaka mean field scheme (MTM), the generalized self-consistent scheme (GSCS), the bimodal hard sphere model (TBHS), and the differential effective medium scheme (DEM). At the lower end of volume fractions investigated, the predictions by the GSCS, the TBHS, and the DEM are very close to each other and to the experimental results while the MTM is clearly lower. With increasing volume fraction the differences between the models accentuate and the data up to 72vol% of diamond are best described by the DEM.