High temperature study on thin aluminium coatings deposited onto thick platinum substrates

 

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dc.contributor.author Topić, M
dc.contributor.author Pineda-Vargas, C A
dc.contributor.author Bucher, R
dc.contributor.author du Plessis, H E
dc.contributor.author Breedt, B
dc.contributor.author Pischedda, V
dc.contributor.author Nxumalo, S
dc.contributor.author Lang, C I
dc.date.accessioned 2016-07-22T12:46:13Z
dc.date.available 2016-07-22T12:46:13Z
dc.date.issued 2009
dc.identifier http://dx.doi.org/10.1016/j.surfcoat.2009.03.028
dc.identifier.citation Topić, M., C. A. Pineda-Vargas, R. Bucher, H. E. du Plessis, B. Breedt, V. Pischedda, S. Nxumalo, and C. I. Lang. "High temperature study on thin aluminium coatings deposited onto thick platinum substrates." Surface and Coatings Technology 203, no. 20 (2009): 3044-3048. en_ZA
dc.identifier.issn 0257-8972 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/20597
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S0257897209002849
dc.description.abstract Intermetallics formation in the Pt–Al binary system at temperatures in the range of 20–600 °C have been investigated by the study of thin aluminium coatings deposited on thick platinum substrates. In order to characterise the changes caused by elevated temperature several techniques such asmicroscopy, X-ray diffraction, nuclear microprobe techniques and microhardness testing were used. In addition to changes in morphology, the high temperature X-ray diffraction (XRD) analysis showed that the initial phase formed when Pt and Al reacted was Pt2Al3. The formation of Pt2Al3 phase started at 250 °C and it is followed by the PtAl and Pt3Al phases. Furthermore, the Pt–Al intermetallics increased the surface hardness; the process of surface hardening by formation of intermetallics without compromising the purity of pure platinum is of great importance for jewellery and other applications where the properties such as hardness and scratch resistance are crucial. en_ZA
dc.language eng en_ZA
dc.publisher Elsevier en_ZA
dc.source Surface and Coatings Technology en_ZA
dc.source.uri http://www.sciencedirect.com/science/article/pii/S0257897209002849
dc.subject.other Coatings
dc.subject.other Intermetallics
dc.subject.other X-ray diffraction
dc.title High temperature study on thin aluminium coatings deposited onto thick platinum substrates en_ZA
dc.type Journal Article en_ZA
dc.date.updated 2016-07-22T12:45:12Z
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Topić, M., Pineda-Vargas, C. A., Bucher, R., du Plessis, H. E., Breedt, B., Pischedda, V., ... Lang, C. I. (2009). High temperature study on thin aluminium coatings deposited onto thick platinum substrates. <i>Surface and Coatings Technology</i>, http://hdl.handle.net/11427/20597 en_ZA
dc.identifier.chicagocitation Topić, M, C A Pineda-Vargas, R Bucher, H E du Plessis, B Breedt, V Pischedda, S Nxumalo, and C I Lang "High temperature study on thin aluminium coatings deposited onto thick platinum substrates." <i>Surface and Coatings Technology</i> (2009) http://hdl.handle.net/11427/20597 en_ZA
dc.identifier.vancouvercitation Topić M, Pineda-Vargas CA, Bucher R, du Plessis HE, Breedt B, Pischedda V, et al. High temperature study on thin aluminium coatings deposited onto thick platinum substrates. Surface and Coatings Technology. 2009; http://hdl.handle.net/11427/20597. en_ZA
dc.identifier.ris TY - Journal Article AU - Topić, M AU - Pineda-Vargas, C A AU - Bucher, R AU - du Plessis, H E AU - Breedt, B AU - Pischedda, V AU - Nxumalo, S AU - Lang, C I AB - Intermetallics formation in the Pt–Al binary system at temperatures in the range of 20–600 °C have been investigated by the study of thin aluminium coatings deposited on thick platinum substrates. In order to characterise the changes caused by elevated temperature several techniques such asmicroscopy, X-ray diffraction, nuclear microprobe techniques and microhardness testing were used. In addition to changes in morphology, the high temperature X-ray diffraction (XRD) analysis showed that the initial phase formed when Pt and Al reacted was Pt2Al3. The formation of Pt2Al3 phase started at 250 °C and it is followed by the PtAl and Pt3Al phases. Furthermore, the Pt–Al intermetallics increased the surface hardness; the process of surface hardening by formation of intermetallics without compromising the purity of pure platinum is of great importance for jewellery and other applications where the properties such as hardness and scratch resistance are crucial. DA - 2009 DB - OpenUCT DP - University of Cape Town J1 - Surface and Coatings Technology LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 SM - 0257-8972 T1 - High temperature study on thin aluminium coatings deposited onto thick platinum substrates TI - High temperature study on thin aluminium coatings deposited onto thick platinum substrates UR - http://hdl.handle.net/11427/20597 ER - en_ZA


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