Papers Submitted to WSEAS Conferences and WSEAS Journals: Wseas Transactions

Monday 30 May 2011

Wseas Transactions

New Subscription to Wseas Transactions

The following information was submitted:

Transactions: WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT
Transactions ID Number: 53-599
Full Name: Ricardo Teixeira
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: 57 Belmiro Braga Street Caicara Br
Country: BRAZIL
Tel: 55 031 86475331
Tel prefix:
Fax:
E-mail address: ext09079@fe.up.pt
Other E-mails: rlteixeira@hotmail.com
Title of the Paper: enhancements in the mfm and xps analysis of low cost nickel-based solar absorber coating
Authors as they appear in the Paper: Ricardo luiz perez Teixeira, Renata antoun Simao, Bruno Coelho, Armando coelho oliveira
Email addresses of all the authors: ext09079@fe.up.pt, renata@metalmat.ufrj.br, bcoelho@fe.up.pt, acoliv@fe.up.pt
Number of paper pages: 10
Abstract: A low cost, black nickel solar absorber coating used in thermal solar collectors on nanostructured highly thermal conductive copper was analyzed using XPS (X-ray photoelectron spectroscopy) and MFM (magnetic force microscopy) techniques. Copper substrate nanostructuration was realized by electrochemical polishment to improve MFM analysis. Black nickel solar absorber coating was electrodeposited on nanostructured C81100 copper due to their good optical properties and low cost. XPS results after 15 minutes of sputtering identified black nickel as a Cermet mainly composed of two metallic nickel atoms for each nickel and zinc sulfide, i.e. 2 Ni: NiS: ZnS and traces of thiocyanate. The MFM black nickel lock-in-phase 5 x 5 square micrometer image presents a estimate mean diameter particle size in of (27 ± 12) nm and mode diameter particle size of (5 ± 12) nm. This nanometric particle was attributed to the ferromagnetic metallic nickel found in XPS analysis. Thus, MFM val!
idated that black nickel solar absorber coating is a nanometric graded cermet of NiS-ZnS with 13 % of metallic nickel nanoparticles by chemical composition of XPS results and MFM.
Keywords: Solar absorber coating, X-ray photoelectron spectroscopy, Magnetic force microscopy, Atomic force microscopy, Optical properties, Black nickel
EXTENSION of the file: .pdf
Special (Invited) Session: Computers and Simulation in Modern Science Volume V
Organizer of the Session:
How Did you learn about congress: 638-125
IP ADDRESS: 201.62.154.128

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