![\"\"](\"http:\/\/www.nickelcasting.com\/wp-content\/uploads\/2025\/12\/34.jpg\")
<\/p>\nL'\u00e9lectrod\u00e9position (\u00e9lectrod\u00e9position de nickel) est r\u00e9alis\u00e9e par r\u00e9duction autocatalytique, ce qui est diff\u00e9rent de l'\u00e9lectrod\u00e9position. L'\u00e9lectrod\u00e9position est r\u00e9alis\u00e9e par un courant externe d\u00fb \u00e0 la diff\u00e9rence de potentiel entre le substrat et le milieu. Essentiellement, il y a pas de diff\u00e9rence significative<\/b> dans le principe de base de la formation des films.<\/p>\n
Le placage chimique est principalement utilis\u00e9 pour la protection contre la corrosion et le placage d\u00e9coratif. Il est largement appliqu\u00e9 les automobiles, les bicyclettes, les horloges, les \u00e9quipements m\u00e9dicaux, les compteurs, les instruments et le mat\u00e9riel informatique<\/b>. Par action chimique, un film uniforme de nickel et\/ou d'autres m\u00e9taux est d\u00e9pos\u00e9 sur la surface d'un m\u00e9tal noir ou d'un m\u00e9tal non ferreux. Le film peut \u00eatre utilis\u00e9 pour le placage d\u00e9coratif, mais il est principalement utilis\u00e9 pour nickel strike, pr\u00e9vention de la rouille, augmentation de la r\u00e9sistance \u00e0 l'usure, de la brillance et de l'esth\u00e9tique<\/b>. Il est largement utilis\u00e9 dans l'\u00e9lectronique, les instruments, les appareils m\u00e9dicaux, les \u00e9quipements de fitness, les articles m\u00e9nagers et les industries manufacturi\u00e8res<\/b>. La couche de galvanoplastie est d'\u00e9paisseur uniforme, et tant que la solution de galvanoplastie peut p\u00e9n\u00e9trer, la dissolution sera compl\u00e8te et uniforme, de sorte qu'elle peut atteindre la forme id\u00e9ale. La galvanoplastie ne peut pas couvrir enti\u00e8rement les pi\u00e8ces complexes, mais la galvanoplastie peut \u00eatre appliqu\u00e9e aux \u00e9l\u00e9ments suivants pi\u00e8ces de toutes formes<\/b>. Le d\u00e9p\u00f4t \u00e9lectrolytique \u00e0 haute teneur en phosphore est amorphe<\/b>, et la surface de la couche de placage ne pr\u00e9sente pas de limites cristallines, alors que la galvanoplastie est typiquement un proc\u00e9d\u00e9 \u00e0 base d'eau. cristallin<\/b>. Comme la galvanoplastie n\u00e9cessite un courant externe, la vitesse de d\u00e9p\u00f4t du nickel par galvanoplastie est beaucoup plus rapide que celle du nickel chimique, mais la couche de galvanoplastie de m\u00eame \u00e9paisseur devra \u00eatre pr\u00e9par\u00e9e plus t\u00f4t que la couche de galvanoplastie. La force d'adh\u00e9rence de la couche de nickel chimique est g\u00e9n\u00e9ralement de sup\u00e9rieure \u00e0 celle de la couche de galvanoplastie<\/b>. Le d\u00e9p\u00f4t chimique utilise principalement additifs de qualit\u00e9 alimentaire<\/b>, L'utilisation de simples sels de nickel ou d'hypophosphite et d'autres substances signifie que le d\u00e9p\u00f4t chimique est plus respectueux de l'environnement que la galvanoplastie. La galvanoplastie n'a actuellement qu'une seule couleur, qui est la couleur d'un alliage de nickel pur sur le march\u00e9, alors que la galvanoplastie peut avoir des couleurs diff\u00e9rentes. de nombreuses couleurs<\/b>.<\/p>\n
<\/p>\n
Tableau de comparaison des performances du nickelage chimique et de l'\u00e9lectrod\u00e9position<\/strong><\/p>\n Q1 : Quel rev\u00eatement permet d'obtenir une couverture plus uniforme sur les pi\u00e8ces complexes - la galvanoplastie ou le nickel chimique ?<\/strong> Q2 : Lequel est le plus dur - le nickel \u00e9lectrod\u00e9pos\u00e9 ou le nickel chimique ?<\/strong> Q3 : Quel rev\u00eatement est le plus r\u00e9sistant \u00e0 la corrosion ?<\/strong> Q4 : Existe-t-il des compromis entre la conductivit\u00e9 \u00e9lectrique et la r\u00e9sistance \u00e0 la corrosion ?<\/strong> Electroless plating (Electroless Nickel Plating) is carried out through autocatalytic reduction, which is different from electroplating. Electroplating is performed by an external current due to the potential difference between the substrate and the medium. Essentially, there is no significant difference in the basic principle of film formation. Electroless plating is mainly used for corrosion protection 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plating (Electroless Nickel Plating) is carried out through autocatalytic reduction, which is different from electroplating. Electroplating is performed by an external current due to the potential difference between the substrate and the medium. Essentially, there is no significant difference in the basic principle of film formation. Electroless plating is mainly used for corrosion protection\u2026","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/posts\/1785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/comments?post=1785"}],"version-history":[{"count":1,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/posts\/1785\/revisions"}],"predecessor-version":[{"id":1787,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/posts\/1785\/revisions\/1787"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/media\/1786"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/media?parent=1785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/categories?post=1785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/fr\/wp-json\/wp\/v2\/tags?post=1785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n\n
\n \nPropri\u00e9t\u00e9 du rev\u00eatement<\/th>\n Nickel \u00e9lectrod\u00e9pos\u00e9<\/th>\n Nickel chimique sans \u00e9lectrolyse<\/th>\n<\/tr>\n<\/thead>\n \n Composition<\/td>\n Contient Ni \u2265 99%<\/td>\n Moyenne 92% Ni + 8% P<\/td>\n<\/tr>\n \n Structure<\/td>\n Cristallin<\/td>\n Amorphe<\/td>\n<\/tr>\n \n Densit\u00e9<\/td>\n Moyenne<\/td>\n \u2014<\/td>\n<\/tr>\n \n Uniformit\u00e9 du rev\u00eatement<\/td>\n Variable<\/td>\n \u00b110%<\/td>\n<\/tr>\n \n Point de fusion (\u00b0C)<\/td>\n 1455<\/td>\n ~890<\/td>\n<\/tr>\n \n Duret\u00e9 apr\u00e8s placage (VHN)<\/td>\n 150-400<\/td>\n 500-600<\/td>\n<\/tr>\n \n Duret\u00e9 apr\u00e8s traitement thermique (VHN)<\/td>\n Inchang\u00e9<\/td>\n 900-1000<\/td>\n<\/tr>\n \n R\u00e9sistance \u00e0 l'usure<\/td>\n Bon<\/td>\n Excellent<\/td>\n<\/tr>\n \n R\u00e9sistance \u00e0 la corrosion<\/td>\n Bon (le rev\u00eatement pr\u00e9sente des pores)<\/td>\n Excellent (rev\u00eatement presque exempt de pores)<\/td>\n<\/tr>\n \n Perm\u00e9abilit\u00e9 magn\u00e9tique relative<\/td>\n 36<\/td>\n 4<\/td>\n<\/tr>\n \n R\u00e9sistivit\u00e9 \u00e9lectrique (\u03a9-cm)<\/td>\n 7<\/td>\n 60-100<\/td>\n<\/tr>\n \n Conductivit\u00e9 thermique (W-m-\u00b9K-\u00b9)<\/td>\n \u2014<\/td>\n ~<\/td>\n<\/tr>\n \n Coefficient de dilatation lin\u00e9aire (K-\u00b9)<\/td>\n \u2014<\/td>\n \u2014<\/td>\n<\/tr>\n \n Module d'\u00e9lasticit\u00e9 (MPa)<\/td>\n 207<\/td>\n 69<\/td>\n<\/tr>\n \n \u00c9longation<\/td>\n \u2014<\/td>\n 2%<\/td>\n<\/tr>\n \n Contrainte interne (MPa)<\/td>\n \u00b169<\/td>\n \u00b169<\/td>\n<\/tr>\n \n Comportement au frottement (par rapport \u00e0 l'acier, \u00e0 l'\u00e9tat sec)<\/td>\n Porter<\/td>\n \u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Questions et r\u00e9ponses connexes<\/h2>\n
A1 :<\/strong> Le nickel chimique (sans \u00e9lectrolyse) offre une couverture beaucoup plus uniforme et conforme et permet de plaquer des formes complexes de mani\u00e8re homog\u00e8ne, car il ne d\u00e9pend pas d'un champ \u00e9lectrique externe.<\/p>\n
A2 :<\/strong> La duret\u00e9 du nickel chimique est g\u00e9n\u00e9ralement plus \u00e9lev\u00e9e (500-600 VHN) que celle de nombreuses couches galvaniques (150-400 VHN). Apr\u00e8s traitement thermique, la duret\u00e9 du nickel chimique peut encore augmenter (900-1000 VHN).<\/p>\n
A3 :<\/strong> Le nickel chimique offre g\u00e9n\u00e9ralement une meilleure r\u00e9sistance \u00e0 la corrosion, car les d\u00e9p\u00f4ts chimiques \u00e0 haute teneur en phosphore sont pratiquement exempts de pores, alors que les rev\u00eatements galvaniques contiennent souvent des pores qui r\u00e9duisent la r\u00e9sistance \u00e0 la corrosion.<\/p>\n
A4 :<\/strong> Oui. Le nickel \u00e9lectrod\u00e9pos\u00e9 (\u00e0 haute teneur en Ni) a une r\u00e9sistivit\u00e9 \u00e9lectrique beaucoup plus faible (~7 \u03a9-cm dans le tableau) que le nickel chimique (60-100 \u03a9-cm), mais le nickel chimique offre g\u00e9n\u00e9ralement une meilleure r\u00e9sistance \u00e0 la corrosion et une meilleure performance \u00e0 l'usure en raison de sa composition et de sa microstructure.<\/p>","protected":false},"excerpt":{"rendered":"