Effects of vacuum sintering temperature on mechanical properties and electric resistance for Cr50–Si50 optical target

Autor:	F. C. Tai, C. Liang, K. T. Huang, Chung-Hung Tam, S. H. Chang, Shih-Chin Lee
Rok vydání:	2011
Předmět:	Materials science Metallurgy Metals and Alloys Sintering Conductivity Condensed Matter Physics Microstructure Transverse plane Electrical resistance and conductance Flexural strength Mechanics of Materials Electrical resistivity and conductivity Materials Chemistry Ceramics and Composites Porosity
Zdroj:	Powder Metallurgy. 54:325-330
ISSN:	1743-2901 0032-5899
DOI:	10.1179/003258909x12537067737286
Popis:	In this study, two kinds of Cr and Si powders were mixed ingredients in set proportions (Cr/Si = 50∶50 in weight percentage), and different vacuum sintering temperatures were used to achieve the optimal densification process. The specimens used in this investigation have common microstructures of hardness, XRD, transverse rupture strength and resistivity of the Cr50–Si50 targets. The microstructure shows that the porosity tends to decrease as sintering temperature increases. Conversely, hardness and transverse rupture strength increase as sintering temperature increases. These results agree with the variation in porosity. Additionally, the resistivity tends to decrease with increasing sintering temperature. It should be correlated with the microstructure of Cr50–Si50 targets, increasing the density of CrSi2 could significantly decrease the resistance. Meanwhile, the resistivity decreases and conductivity increases as the neighbours are closer together, which also results from the decreasing porosity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1823a62549aeb9258abd2edd29e64488 https://doi.org/10.1179/003258909x12537067737286 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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