Provided are coated zinc particles, a method for manufacturing coated zinc particles, and a rust preventive coating composition, wherein at least a portion of the surfaces of (A) zinc particles and/or zinc alloy particles is coated with (B) a vanadium-containing particulate deposit, and the ratio of the content of vanadium atoms to the total amount of the content of component (A) and the content of component (B) is 7000-25000 mass ppm.
There is provided a rust preventive pigment capable of achieving both high stability in water or an aqueous medium, and excellent rust preventive capability and adhesion of an obtained rust preventive film, and a rust preventive coating composition with which a rust preventive film can be obtained that excels in stability of a rust preventive pigment and that excels in rust preventive capability and adhesion. The rust preventive coating composition of the present invention contains a rust preventive pigment comprising one or more among particles of zinc or a zinc alloy that has had at least a portion of the surface thereof treated with phosphoric acid.
The present invention relates to: a rust-proofing treatment method comprising the step of treating an object that comprises a metal or an alloy and is heated to a temperature higher than 180° C. or an object that has, formed on the surface thereof, a film or layer comprising a metal or an alloy and is heated to a temperature higher than 180° C. with an aqueous solution containing an inorganic acid or an inorganic salt, or comprising the step of treating an object comprising a metal or an alloy or an object having, formed on the surface thereof, a film or layer comprising a metal or an alloy with an aqueous solution containing at least one component selected from silicic acid, a silicic acid salt, phosphoric acid, a phosphoric acid salt, a monohydrogen phosphate salt, a dihydrogen phosphate salt and a zirconium salt; and an article characterized by being rust-proofing-treated by the rust-proofing treatment method.
C23C 22/48 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 ne contenant ni phosphates, ni composés du chrome hexavalent, ni fluorures ou fluorures complexes, molybdates, tungstates, vanadates ou oxalates
C23C 22/07 - Traitement chimique de surface de matériaux métalliques par réaction de la surface avec un milieu réactif laissant des produits de réaction du matériau de la surface dans le revêtement, p. ex. revêtement par conversion, passivation des métaux au moyen de solutions aqueuses au moyen de solutions aqueuses acides d'un pH < 6 contenant des phosphates
Provided are a rust preventive pigment capable of achieving both high stability in water or an aqueous medium, and excellent rust preventive capability and adhesion of an obtained rust preventive film, and a rust preventive coating composition with which a rust preventive film can be obtained that excels in stability of a rust preventive pigment and that excels in rust preventive capability and adhesion. The rust preventive coating composition of the present invention contains a rust preventive pigment comprising one or more among particles of zinc or a zinc alloy that has had at least a portion of the surface thereof treated with phosphoric acid.
The present invention relates to: a rust-proofing treatment method comprising the step of treating an object that comprises a metal or an alloy and is heated to a temperature higher than 180℃ or an object that has, formed on the surface thereof, a film or layer comprising a metal or an alloy and is heated to a temperature higher than 180℃ with an aqueous solution containing an inorganic acid or an inorganic salt, or comprising the step of treating an object comprising a metal or an alloy or an object having, formed on the surface thereof, a film or layer comprising a metal or an alloy with an aqueous solution containing at least one component selected from silicic acid, a silicic acid salt, phosphoric acid, a phosphoric acid salt, a monohydrogen phosphate salt, a dihydrogen phosphate salt and a zirconium salt; and an article characterized by being rust-proofing-treated by the rust-proofing treatment method.
C23C 22/77 - Commande ou régulation du procédé de revêtement
B05D 3/02 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par cuisson
B05D 5/00 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces pour obtenir des effets, finis ou des structures de surface particuliers
B05D 7/14 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers à du métal, p. ex. à des carrosseries de voiture
B05D 7/24 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers pour appliquer des liquides ou d'autres matériaux fluides particuliers
Disclosed are: a rust inhibiting coating film which exhibits excellent rust inhibiting properties as a black rust inhibitor, while having a sufficient black color tone; a rust inhibiting metal member; and a zinc-based black rust inhibitor which is capable of forming the rust inhibiting coating film. Specifically disclosed is a zinc-based black rust inhibitor which is characterized by containing (1) a zinc pigment and/or a zinc alloy pigment, (2) black synthetic iron oxide and (3) a phosphoric acid-based rust inhibiting pigment in such amounts that the mass ratio of (1) the zinc pigment and/or zinc alloy pigment to (2) the black synthetic iron oxide ((1)/(2)) is within the range from 85/15 to 65/35 and the mass ratio of (2) the black synthetic iron oxide to (3) the phosphoric acid-based rust inhibiting pigment ((2)/(3)) is within the range from 70/30 to 50/50. Also specifically disclosed are a rust inhibiting coating film which is formed from the zinc-based black rust inhibitor, and a rust inhibiting metal member in which the rust inhibiting coating film is provided on the surface of a metal base.
C23F 11/00 - Inhibition de la corrosion de matériaux métalliques par application d'inhibiteurs sur la surface menacée par la corrosion ou par addition d'inhibiteurs à l'agent corrosif
B32B 15/08 - Produits stratifiés composés essentiellement de métal comprenant un métal comme seul composant ou comme composant principal d'une couche adjacente à une autre couche d'une substance spécifique de résine synthétique
C09D 1/00 - Compositions de revêtement, p. ex. peintures, vernis ou vernis-laques, à base de substances inorganiques
C09D 5/10 - Peintures anti-corrosion contenant une poudre métallique
