{"title":"Effect of size, shape, orientation, pressure and temperature on elastic properties of nanomaterials","authors":"Komal Rawat, M. Goyal","doi":"10.32908/hthp.v51.1009","DOIUrl":null,"url":null,"abstract":"A theoretical formulism is developed to study the impact of temperature and pressure on nanomaterials. Here Shankar equation of state for solids is extended using an analytic model given by Jiang for nanomaterials. The effect of size, dimension and orientation of nanomaterial on the elastic properties is studied. Bulk modulus is found to decrease as the size of nanomaterials is increased for inward relaxation whereas increase in bulk modulus of nanomaterials with increase in size is found for outward relaxation. Volume expansion coefficient variation is inverse of bulk modulus. The volume decreases as the pressure on the nanomaterials is increased at room temperature, however, volume expansion occurs in nanomaterials with increase in temperature. The nanomaterials of Cu, Ag, Ni, ZnO, SnO2, CeO2, TiO2, ZrO2 and AlN are considered in the present study. The present model results are found in good agreement with the available experimental and theoretically simulated results which justify the present model theory.","PeriodicalId":12983,"journal":{"name":"High Temperatures-high Pressures","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"High Temperatures-high Pressures","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.32908/hthp.v51.1009","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
A theoretical formulism is developed to study the impact of temperature and pressure on nanomaterials. Here Shankar equation of state for solids is extended using an analytic model given by Jiang for nanomaterials. The effect of size, dimension and orientation of nanomaterial on the elastic properties is studied. Bulk modulus is found to decrease as the size of nanomaterials is increased for inward relaxation whereas increase in bulk modulus of nanomaterials with increase in size is found for outward relaxation. Volume expansion coefficient variation is inverse of bulk modulus. The volume decreases as the pressure on the nanomaterials is increased at room temperature, however, volume expansion occurs in nanomaterials with increase in temperature. The nanomaterials of Cu, Ag, Ni, ZnO, SnO2, CeO2, TiO2, ZrO2 and AlN are considered in the present study. The present model results are found in good agreement with the available experimental and theoretically simulated results which justify the present model theory.
期刊介绍：
High Temperatures – High Pressures (HTHP) is an international journal publishing original peer-reviewed papers devoted to experimental and theoretical studies on thermophysical properties of matter, as well as experimental and modelling solutions for applications where control of thermophysical properties is critical, e.g. additive manufacturing. These studies deal with thermodynamic, thermal, and mechanical behaviour of materials, including transport and radiative properties. The journal provides a platform for disseminating knowledge of thermophysical properties, their measurement, their applications, equipment and techniques. HTHP covers the thermophysical properties of gases, liquids, and solids at all temperatures and under all physical conditions, with special emphasis on matter and applications under extreme conditions, e.g. high temperatures and high pressures. Additionally, HTHP publishes authoritative reviews of advances in thermophysics research, critical compilations of existing data, new technology, and industrial applications, plus book reviews.
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