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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >MICROHARDNESS, YOUNGS MODULUS AND FRACTURE TOUGHNESS OF ALUMINA IMPLANTED WITH ZR+, CR+, TI+ AND NI+ - THE EFFECT OF THE RESIDUAL STRESSES
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MICROHARDNESS, YOUNGS MODULUS AND FRACTURE TOUGHNESS OF ALUMINA IMPLANTED WITH ZR+, CR+, TI+ AND NI+ - THE EFFECT OF THE RESIDUAL STRESSES

机译：ZR +，CR +，TI +和NI +注入的氧化铝的微硬度，杨氏模量和断裂韧性-残余应力的影响

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摘要

Ion implantation is known to be capable of modifying the surface and near-surface chemical and mechanical properties of solids pertaining to hardness, elastic modulus and fracture toughness. In this study polycrystalline alumina was implanted with Zr+, Cr+, Ti+ and Ni+ ions (110 keV) to a dose of 10(17) ions/cm(2) at room temperature. Mechanical properties such as hardness and Young's modulus were determined using an ultra-low load microindentation hardness tester. With the Vickers indentation method, using different loads, the fracture toughness of the implanted layer was determined. The nature of the chemical phases were characterized by x-ray photoelectron spectroscopy (XPS). implantation caused an increase in the hardness and the fracture toughness with no detectable effect on the Young's modulus. These modifications were attributed to microstructural changes caused by the implantation. The residual stresses were determined by a previously described indentation technique. They were found to be compressive in nature and ranged from 800 to 1800 MPa. [References: 22]
机译：已知离子注入能够改变与硬度，弹性模量和断裂韧性有关的固体的表面和近表面化学和机械性能。在这项研究中，在室温下将多晶氧化铝注入Zr +，Cr +，Ti +和Ni +离子（110 keV）至10（17）离子/ cm（2）的剂量。使用超低负荷微压痕硬度测试仪测定机械性能，例如硬度和杨氏模量。使用维氏压痕法，在不同的载荷下，确定了注入层的断裂韧性。化学相的性质通过X射线光电子能谱（XPS）表征。植入引起硬度和断裂韧性的增加，而对杨氏模量没有可检测的影响。这些修饰归因于植入引起的微结构变化。残余应力通过先前描述的压痕技术确定。发现它们本质上是压缩的，范围从800到1800 MPa。 [参考：22]

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