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使用高温纳米压痕对不同沉积条件下制备的碳化硅涂层进行的对比研究。

Comparison study of silicon carbide coatings produced at different deposition conditions with use of high temperature nanoindentation.

作者信息

Rohbeck Nadia, Tsivoulas Dimitrios, Shapiro Ian P, Xiao Ping, Knol Steven, Escleine Jean-Michel, Perez Marc, Liu Bing

机构信息

1School of Materials, The University of Manchester, Oxford Road, Manchester, M13 9PL UK.

2Clean Energy/Nuclear Services, Amec Foster Wheeler, 601 Faraday Street, Birchwood Park, Warrington, WA3 6GN UK.

出版信息

J Mater Sci. 2017;52(4):1868-1882. doi: 10.1007/s10853-016-0476-5. Epub 2016 Oct 14.

DOI:10.1007/s10853-016-0476-5
PMID:30996468
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6434990/
Abstract

The elastic modulus and hardness of different silicon carbide (SiC) coatings in tristructural-isotropic (TRISO) fuel particles were measured by in situ high temperature nanoindentation up to 500 °C. Three samples fabricated by different research institutions were compared. Due to varied fabrication parameters the samples exhibited different grain sizes and one contained some visible porosity. However, irrespective of the microstructural features in each case the hardness was found to be very similar in the three coatings around 35 GPa at room temperature. Compared with the significantly coarser grained bulk CVD SiC, the drop in hardness with temperature was less pronounced for TRISO particles, suggesting that the presence of grain boundaries impeded plastic deformation. The elastic modulus differed for the three TRISO coatings with room temperature values ranging from 340 to 400 GPa. With increasing measurement temperature the elastic modulus showed a continuous decrease.

摘要

通过高达500°C的原位高温纳米压痕测量了三结构各向同性（TRISO）燃料颗粒中不同碳化硅（SiC）涂层的弹性模量和硬度。比较了由不同研究机构制备的三个样品。由于制造参数不同，样品呈现出不同的晶粒尺寸，其中一个含有一些可见孔隙率。然而，无论每种情况下的微观结构特征如何，发现这三种涂层在室温下的硬度非常相似，约为35 GPa。与晶粒明显更粗大的块状化学气相沉积（CVD）SiC相比，TRISO颗粒的硬度随温度的下降不太明显，这表明晶界的存在阻碍了塑性变形。三种TRISO涂层的弹性模量不同，室温值在340至400 GPa之间。随着测量温度的升高，弹性模量持续下降。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/34f133722af2/10853_2016_476_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/f893ceb33b7f/10853_2016_476_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/2ff6dff69d3a/10853_2016_476_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/d68a57498c0e/10853_2016_476_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/9b155fb4e947/10853_2016_476_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/4efd550e3b03/10853_2016_476_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/6a47ee089088/10853_2016_476_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/eff9d4d536c5/10853_2016_476_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/7ca7c281bf15/10853_2016_476_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/9742b55fd000/10853_2016_476_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/34f133722af2/10853_2016_476_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/f893ceb33b7f/10853_2016_476_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/2ff6dff69d3a/10853_2016_476_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/d68a57498c0e/10853_2016_476_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/9b155fb4e947/10853_2016_476_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/4efd550e3b03/10853_2016_476_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/6a47ee089088/10853_2016_476_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/eff9d4d536c5/10853_2016_476_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/7ca7c281bf15/10853_2016_476_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/9742b55fd000/10853_2016_476_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e427/6434990/34f133722af2/10853_2016_476_Fig10_HTML.jpg

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本文引用的文献

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Invited Article: Indenter materials for high temperature nanoindentation.特邀文章：用于高温纳米压痕的压头材料
Rev Sci Instrum. 2013 Oct;84(10):101301. doi: 10.1063/1.4824710.
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Rev Sci Instrum. 2010 Jul;81(7):073901. doi: 10.1063/1.3436633.