Accueil
Catégories
> Alliages nickel-phosphore
Alliages nickel-phosphoreVoir aussi
|
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
Electrodeposited nickel-phosphorus (Ni-P) alloy coating : an in-depth study of its preparation, properties and structural transitions / Anju M. Pillai in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 6 (11/2012)
[article]
Titre : Electrodeposited nickel-phosphorus (Ni-P) alloy coating : an in-depth study of its preparation, properties and structural transitions Type de document : texte imprimé Auteurs : Anju M. Pillai, Auteur ; A. Rajendra, Auteur ; A. K. Sharma, Auteur Année de publication : 2012 Article en page(s) : p. 785-797 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages nickel-phosphore
Dépôt électrolytique
Microstructures
Nanoindentation
Revêtement métallique
Traitement thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Ni-P deposits with a phosphorus content of up to 20% (wt) were obtained on AA6061 substrates by direct current electrodeposition technique from a solution containing nickel sulfate, nickel chloride, phosphorous acid, phosphoric acid, and a wetting ageng (sodium lauryl sulfate). The effect of various plating parameters like current density, concentration of phosphorous acid, concentration of phosphoric acid and plating temperature on the P content of the coating as well as the rate of deposition was investigated systematically. It has been observed that the influence of current density on the P content of the deposit is largely dependent on the concentration of phosphorous acid in the plating bath. Composition, surface morphology, microstructure, and mechanical properties of the Ni-P deposits were studied using SEM, EDAX, XRD, and nanoindentation techniques. Ni-P electrodeposits with low P ocntent in the range of 4è7 wt% of P exhibited superior microhardness of 7.74-8.57 GPa. With increasing P content in the deposit, the structure undergoes transition from crystalline to nanocrystalline and becomes amorphous above 9.14 wt% of P. Ni-P alloys with some selected compositions were subjected to heat treatment at 400°C for 1h in a hot air oven and the resulting variation in mechanical properties was studied using nanoindentation technique. Note de contenu : - Appearance
- Effect of plating parameters
- Effect of P content on the surface morphology of the coating
- Effect of P content on the microstructure of the coating
- Influence of plating parameters on the mechanical properties of the deposit
- Effect of heat treatment on the microstructure of the coating
- Effect of heat treatment on mechanical propertiesDOI : 10.1007/s11998-012-9411-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-012-9411-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16664
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 6 (11/2012) . - p. 785-797[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14359 - Périodique Bibliothèque principale Documentaires Disponible Electroless nickel–phosphorus deposition on carbon steel CK-75 and study of the effects of some parameters on properties of the deposits / H. R. Molla in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
[article]
Titre : Electroless nickel–phosphorus deposition on carbon steel CK-75 and study of the effects of some parameters on properties of the deposits Type de document : texte imprimé Auteurs : H. R. Molla, Auteur ; H. Modarress, Auteur ; M. Abdouss, Auteur Année de publication : 2012 Article en page(s) : p. 183-188 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages nickel-phosphore
Cristallisation
Dépôt autocatalytique
Dureté (matériaux)
Revêtement métalliqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Electroless nickel–phosphorus (Ni–P) deposition provides coatings with high hardness and excellent resistance to wear and abrasion. In this study, autocatalytic deposition of Ni–P alloy has been carried out on steel CK-75 sheets from bath containing nickel sulfate hexahydrate, sodium hypophosphite hydrate, thiourea, lactic acid, and sodium acetate. The effects of lactic acid concentration, pH and temperature on deposition rate, composition of deposits, and hardness have been studied. Also the changes in the hardness and structure of deposits by heat-treatment were studied by X-ray diffraction and scanning electron microscopy methods. It is shown that deposits crystallized after heat-treatment at 400°C for 1 h and crystallization to Ni and Ni3P was observed. Note de contenu : - Deposition rate
- Deposit composition
- Hardness
- StructureDOI : 10.1007/s11998-009-9231-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-009-9231-z.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14370
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 2 (03/2012) . - p. 183-188[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14096 - Périodique Bibliothèque principale Documentaires Disponible Influence of nickel ions for electroless Ni–P plating on polyester fabric / R. H. Guo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
[article]
Titre : Influence of nickel ions for electroless Ni–P plating on polyester fabric Type de document : texte imprimé Auteurs : R. H. Guo, Auteur ; S. Q. Jiang, Auteur ; C. W. M. Yuen, Auteur ; M. C. F. Ng, Auteur ; G. H. Zheng, Auteur Année de publication : 2012 Article en page(s) : p. 171–176 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages nickel-phosphore
Bains de placage
Dépôt autocatalytique
Interférences électromagnétiques
Ions métalliques
NickelLe nickel est un élément chimique, de symbole Ni et de numéro atomique 28.
Le nickel est un métal blanc argenté qui possède un éclat poli. Il fait partie du groupe du fer. C'est un métal ductile (malléable). On le trouve sous forme combinée au soufre dans la millérite, à l'arsenic dans la nickéline.
Grâce à sa résistance à l'oxydation et à la corrosion, il est utilisé dans les pièces de monnaie, pour le plaquage du fer, du cuivre, du laiton, dans certaines combinaisons chimiques et dans certains alliages. Il est ferromagnétique, et est fréquemment accompagné de cobalt. Il est particulièrement apprécié pour les alliages qu'il forme.
PolyestersIndex. décimale : 667.9 Revêtements et enduits Résumé : Properties of electroless Ni–P plated polyester fabric mainly depend on the plating bath constituents/conditions. The effects of NiSO4 concentration of the plating bath on the deposition rate, phosphorus content, surface morphology, and crystal structure of the electroless Ni–P plated polyester fabric were investigated. The study revealed that phosphorus content in the deposits decreased at higher NiSO4 concentration. SEM micrographs showed that nodule size of the Ni–P deposits increased. All the Ni–P deposits had an amorphous structure. The electromagnetic interference (EMI) shielding effectiveness (SE) of electroless Ni–P plated polyester fabric was evaluated. With the rise of nickel ion in the solution, the EMI SE of the Ni–P plated polyester fabric increased. Note de contenu : - Deposition rate
- Deposition composition
- Surface morphology
- Crystal structure
- EMI shielding effectivenessDOI : 10.1007/s11998-009-9227-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-009-9227-8.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14368
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 2 (03/2012) . - p. 171–176[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14096 - Périodique Bibliothèque principale Documentaires Disponible Study of corrosion and friction reduction of electroless Ni-P coating with molybdenum disulfide nanoparticles / Hu Xianguo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 2 (06/2009)
[article]
Titre : Study of corrosion and friction reduction of electroless Ni-P coating with molybdenum disulfide nanoparticles Type de document : texte imprimé Auteurs : Hu Xianguo, Auteur ; Xiaojun Sun, Auteur ; Yufu Xu, Auteur ; Jiucong Wan, Auteur ; Peng Jiang, Auteur Année de publication : 2009 Article en page(s) : p. 275-281 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages nickel-phosphore
Bains de placage
Bisulfure de Molybdène
Corrosion
Frottements (mécanique)
Métallisation
Nanoparticules
Revêtement métalliqueIndex. décimale : 667.9 Revêtements et enduits Résumé : One composite coating of Ni–P alloys containing MoS2 nanoparticles was prepared by electroless technique based on the better friction reduction ability of MoS2 and better anticorrosion property of electroless Ni–P alloys on carbon steel surfaces. Electrochemical method—that is, using Tafel polarization curves—was carried out in order to study the corrosion performance of the coating. The results indicate that the anticorrosion ability of the composite coating was decreased because of the addition of nano-MoS2 particles. The corrosional surfaces were studied and analyzed through scanning electron microscopy (SEM). The corrosion mechanism of the composite coatings was mainly ascribed to the formation of microcells around the nanosized MoS2 particles, and the active ion-like Cl- destroyed the surface film and induced the corrosion on the inside part of the coating. The friction coefficient of electroless composite coatings was measured by end-facing tribometer. It was found that the friction coefficient of the Ni–P–(nano-MoS2) composite coating decreased greatly compared with those of Ni–P electroless coatings. DOI : 10.1007/s11998-008-9131-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9131-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5642
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 2 (06/2009) . - p. 275-281[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011361 - Périodique Bibliothèque principale Documentaires Disponible