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Détail de l'auteur
Auteur P. Wang
Documents disponibles écrits par cet auteur
Affiner la rechercheAnti-tarnish treatment of brass for coinage (II) color analysis, adsorption model, and quantum chemical calculations / C. Liang in Materials and corrosion, Vol. 62 N° 1 (Janvier 2011)
[article]
in Materials and corrosion > Vol. 62 N° 1 (Janvier 2011) . - pp. 53–60
Titre : Anti-tarnish treatment of brass for coinage (II) color analysis, adsorption model, and quantum chemical calculations Type de document : texte imprimé Auteurs : C. Liang, Auteur ; P. Wang, Auteur ; B. Wu, Auteur Année de publication : 2011 Article en page(s) : pp. 53–60 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : adsorption model Brass EIS Quantum chemical calculation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : The color and gloss of brass before and after anti-tarnish treatment were analyzed with color difference meter, and the inhibition effect of 1-phenyl-5-mercapto-tetrazole (PMTA) film on brass was investigated by means of electrochemical impedance spectroscopy (EIS). It was found that the treatment with PMTA brought few changes to the original color and gloss of brass. The adsorption of PMTA on brass surface obeyed Langmuir adsorption isotherm, it was a spontaneous and exothermic process accompanied by an increase in entropy. Further, quantum chemical calculation was applied to elucidate the corrosion inhibition mechanism of PMTA on brass surface.
DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905482/abstract [article] Anti-tarnish treatment of brass for coinage (II) color analysis, adsorption model, and quantum chemical calculations [texte imprimé] / C. Liang, Auteur ; P. Wang, Auteur ; B. Wu, Auteur . - 2011 . - pp. 53–60.
Génie Mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 62 N° 1 (Janvier 2011) . - pp. 53–60
Mots-clés : adsorption model Brass EIS Quantum chemical calculation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : The color and gloss of brass before and after anti-tarnish treatment were analyzed with color difference meter, and the inhibition effect of 1-phenyl-5-mercapto-tetrazole (PMTA) film on brass was investigated by means of electrochemical impedance spectroscopy (EIS). It was found that the treatment with PMTA brought few changes to the original color and gloss of brass. The adsorption of PMTA on brass surface obeyed Langmuir adsorption isotherm, it was a spontaneous and exothermic process accompanied by an increase in entropy. Further, quantum chemical calculation was applied to elucidate the corrosion inhibition mechanism of PMTA on brass surface.
DEWEY : 620.1 ISSN : 0947-5117 En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905482/abstract Planning performance based contracts considering reliability and uncertain system usage / T. Jin in Journal of the operational research society (JORS), Vol. 63 N° 10 (Octobre 2012)
[article]
in Journal of the operational research society (JORS) > Vol. 63 N° 10 (Octobre 2012) . - pp. 1467–1478
Titre : Planning performance based contracts considering reliability and uncertain system usage Type de document : texte imprimé Auteurs : T. Jin, Auteur ; P. Wang, Auteur Année de publication : 2012 Article en page(s) : pp. 1467–1478 Note générale : operational research Langues : Anglais (eng) Mots-clés : reliability; service parts logistics; performance based contracting; performance-based outcome; post-production support; power by the hour Index. décimale : 001.424 Résumé : This paper investigates a novel quantitative approach for planning and contracting performance-based logistics in the presence of uncertain system usage. Our efforts focus on an integrated service delivery environment where the manufacturer develops capital-intensive systems and also provides after-sales support. We propose an analytical model to characterize system operational availability by comprehending five performance drivers: inherent failure rate, usage rate, spare parts inventory, repair time, and the fleet size. This analytical insight into the system performance allows the service supplier to minimize the total cost across system design, production, maintenance, and repair. Two contracting schemes are investigated under cost minimization and profit maximization schemes. For the first time in literature, reliability design and service parts logistics are seamlessly integrated into one decision support model for improving operational availability while lowering the lifecycle cost. Numerical examples are provided to demonstrate the applicability and the effectiveness of the proposed decision support tool. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n10/abs/jors2011144a.html [article] Planning performance based contracts considering reliability and uncertain system usage [texte imprimé] / T. Jin, Auteur ; P. Wang, Auteur . - 2012 . - pp. 1467–1478.
operational research
Langues : Anglais (eng)
in Journal of the operational research society (JORS) > Vol. 63 N° 10 (Octobre 2012) . - pp. 1467–1478
Mots-clés : reliability; service parts logistics; performance based contracting; performance-based outcome; post-production support; power by the hour Index. décimale : 001.424 Résumé : This paper investigates a novel quantitative approach for planning and contracting performance-based logistics in the presence of uncertain system usage. Our efforts focus on an integrated service delivery environment where the manufacturer develops capital-intensive systems and also provides after-sales support. We propose an analytical model to characterize system operational availability by comprehending five performance drivers: inherent failure rate, usage rate, spare parts inventory, repair time, and the fleet size. This analytical insight into the system performance allows the service supplier to minimize the total cost across system design, production, maintenance, and repair. Two contracting schemes are investigated under cost minimization and profit maximization schemes. For the first time in literature, reliability design and service parts logistics are seamlessly integrated into one decision support model for improving operational availability while lowering the lifecycle cost. Numerical examples are provided to demonstrate the applicability and the effectiveness of the proposed decision support tool. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n10/abs/jors2011144a.html Studies on corrosion inhibition of copper by alkanethiol SAMs prepared in aqueous micellar solution / P. Wang in Materials and corrosion, Vol. 61 N° 4 (Avril 2010)
[article]
in Materials and corrosion > Vol. 61 N° 4 (Avril 2010) . - pp. 332–337
Titre : Studies on corrosion inhibition of copper by alkanethiol SAMs prepared in aqueous micellar solution Type de document : texte imprimé Auteurs : P. Wang, Auteur ; C. Liang, Auteur ; Huang, N., Auteur Année de publication : 2010 Article en page(s) : pp. 332–337 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : copper; corrosion; inhibition; SAMs Résumé : The character of 1-dodecanethiol (DT) self-assembled monolayers (SAMs) formed on copper surface in aqueous micellar solution is investigated by means of contact angle measurement, electrochemical impedance spectroscopy (EIS), and polarization curves. The contact angle measurement shows that the SAMs formed in aqueous micellar solution are oriented and compact. According to the electrochemical measurements, it is found that both the concentration of DT and temperature can significantly affect the property of SAMs. The DT SAMs can prevent the corrosion of copper in chloride-containing solution effectively because the inhibition efficiency can reach 99.59% at the DT concentration of 10−2 M. The adsorption of DT in aqueous micellar solution obeys to the Langmuir adsorption isotherm, and the value of the free energy of adsorption calculated indicates that the adsorption of DT molecule is a spontaneous process and a typical of chemical adsorption. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905285/abstract [article] Studies on corrosion inhibition of copper by alkanethiol SAMs prepared in aqueous micellar solution [texte imprimé] / P. Wang, Auteur ; C. Liang, Auteur ; Huang, N., Auteur . - 2010 . - pp. 332–337.
Génie mécanique
Langues : Anglais (eng)
in Materials and corrosion > Vol. 61 N° 4 (Avril 2010) . - pp. 332–337
Mots-clés : copper; corrosion; inhibition; SAMs Résumé : The character of 1-dodecanethiol (DT) self-assembled monolayers (SAMs) formed on copper surface in aqueous micellar solution is investigated by means of contact angle measurement, electrochemical impedance spectroscopy (EIS), and polarization curves. The contact angle measurement shows that the SAMs formed in aqueous micellar solution are oriented and compact. According to the electrochemical measurements, it is found that both the concentration of DT and temperature can significantly affect the property of SAMs. The DT SAMs can prevent the corrosion of copper in chloride-containing solution effectively because the inhibition efficiency can reach 99.59% at the DT concentration of 10−2 M. The adsorption of DT in aqueous micellar solution obeys to the Langmuir adsorption isotherm, and the value of the free energy of adsorption calculated indicates that the adsorption of DT molecule is a spontaneous process and a typical of chemical adsorption. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905285/abstract