This invention relates to a sealing solution kit comprises: a medium temperature sealing solution; and a high temperature sealing solution. This invention also provides a method for sealing an anodized aluminum alloy surface by using the sealing solution kit, an article which has at least one portion that comprises side treated surface by the sealing solution kit demonstrates improved corrosion resistance and vehicles comprising said surface treated articles as automotive parts. The vehicles with said surface treated articles can endure harsh environmental conditions.

This invention relates to a sealing solution kit comprises: a medium temperature sealing solution; and a high temperature sealing solution. This invention also provides a method for sealing an anodized aluminum alloy surface by using the sealing solution kit, an article which has at least one portion that comprises side treated surface by the sealing solution kit demonstrates improved corrosion resistance and vehicles comprising said surface treated articles as automotive parts. The vehicles with said surface treated articles can endure harsh environmental conditions.

A method of forming a bi-metallic casting. The method includes providing a metal preform of a desired base shape defining a substrate surface and removing a natural oxide layer and surface contamination from the substrate surface to yield a cleaned metal preform. The method further includes galvanizing the cleaned metal preform, yielding a galvanized metal preform followed by electroplating a thin nickel film on at least a portion of the substrate surface of the galvanized metal preform. Additionally, the method includes metallurgically bonding the portion of the metal preform having the nickel film with an overcast metal to form a bi-metallic casting. The nickel film promotes a metallurgical bond between the metal preform and the overcast metal.

A method of forming a bi-metallic casting. The method includes providing a metal preform of a desired base shape defining a substrate surface and removing a natural oxide layer and surface contamination from the substrate surface to yield a cleaned metal preform. The method further includes galvanizing the cleaned metal preform, yielding a galvanized metal preform followed by electroplating a thin nickel film on at least a portion of the substrate surface of the galvanized metal preform. Additionally, the method includes metallurgically bonding the portion of the metal preform having the nickel film with an overcast metal to form a bi-metallic casting. The nickel film promotes a metallurgical bond between the metal preform and the overcast metal.

A method for producing a corrosion resistant metal substrate and corrosion resistant metal substrate provided thereby. The method involves forming a plated substrate including a metal substrate provided with a nickel layer or with a nickel and cobalt layer followed by electrodepositing a molybdenum oxide layer from an aqueous solution onto the plated substrate, which is subsequently subjected to an annealing step in a reducing atmosphere to reduce the molybdenum oxide in the molybdenum oxide layer to molybdenum metal in a reduction annealing step and to form a diffusion layer which contains nickel and molybdenum, and optionally cobalt.

A method for producing a corrosion resistant metal substrate and corrosion resistant metal substrate provided thereby. The method involves forming a plated substrate including a metal substrate provided with a nickel layer or with a nickel and cobalt layer followed by electrodepositing a molybdenum oxide layer from an aqueous solution onto the plated substrate, which is subsequently subjected to an annealing step in a reducing atmosphere to reduce the molybdenum oxide in the molybdenum oxide layer to molybdenum metal in a reduction annealing step and to form a diffusion layer which contains nickel and molybdenum, and optionally cobalt.

In some examples, the disclosure describes a technique that includes covering a joint surface of a first part including a titanium aluminum (TiAl) alloy with a braze material including aluminum, where covering the joint surface includes at least one of electroplating the braze material on the joint surface, hot dipping the braze material on the joint surface, or positioning a foil of the braze material adjacent to the joint surface, positioning a second part including a titanium alloy in contact with the first part to define a joint region, where the joint region includes the braze material interposed between the second part and the joint surface of the first part, and heating the joint region to at least partially melt the braze material to form a braze joint connecting the first part to the second part.

A chamber component for a processing chamber comprises a metallic article that comprises impurities. The chamber component further comprises a first anodization layer on the metallic article, the first anodization layer having a thickness greater than about 100 nm. The first anodization layer comprises a dense barrier layer portion and a porous columnar layer portion over the dense barrier layer portion, wherein the porous columnar layer portion comprises a plurality of pores that are free from moisture. The chamber component further comprises an aluminum coating on the first anodization layer, the aluminum coating being substantially free from impurities.

A chamber component for a processing chamber comprises a metallic article that comprises impurities. The chamber component further comprises a first anodization layer on the metallic article, the first anodization layer having a thickness greater than about 100 nm. The first anodization layer comprises a dense barrier layer portion and a porous columnar layer portion over the dense barrier layer portion, wherein the porous columnar layer portion comprises a plurality of pores that are free from moisture. The chamber component further comprises an aluminum coating on the first anodization layer, the aluminum coating being substantially free from impurities.

A high-temperature long lifespan electrode includes a through type aluminum sheet, a plurality of first hollow protrusion members protruded to one side of the through type aluminum sheet, a plurality of second hollow protrusion members protruded to the other side of the through type aluminum sheet, a metal protection layer coated on the through type aluminum sheet, the plurality of first hollow protrusion members, a first active material sheet bonded to one surface of the through type aluminum sheet, and a second active material sheet bonded to the other surface of the second surface of the through type aluminum sheet.