Elastic moduli of nc-TiN/a-Si3N4 nanocomposites: Compressible, yet superhard
Elastic moduli of nc-TiN/a-Si3N4 nanocomposites: Compressible, yet superhard
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DOI：
10.1016/j.jpcs.2010.03.029
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发表时间：
2010-08
影响因子：
4
通讯作者：
S. Vepřek;S. G. Prilliman;S. Clark
中科院分区：
文献类型：
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作者：
S. Vepřek;S. G. Prilliman;S. Clark
早期测量nc-TiN/a-Si 3 N4纳米复合材料的不同组成和硬度的振动簧片和表面布里渊散射，产生杨氏模量和剪切模量，以及泊松比的弹性模量，已被证实的高压X射线衍射测量，产生体积模量。结果表明，在相对较小的测量误差范围内，所有被测样品的弹性模量基本相同，仅略低于纯TiN。纳米复合材料是超硬的，这要归功于它们独特的纳米结构，具有强化的SiNx界面。
Earlier measurements of elastic moduli of nc-TiN/a-Si3N4nanocomposites of different composition and hardness by means of vibrating reed and surface Brillouing scattering, that yield Young’s and shear modulus, as well as the Poisson’s ratio, have been confirmed by high-pressure X-ray diffraction measurements, that yield bulk modulus. It is found that elastic moduli of all measured samples are essentially the same within relatively small error of measurements, and only slightly lower than that of pure TiN. The nanocomposites are superhard thanks to their unique nanostructure with strengthened SiNxinterface.