A coating including a CMAS-resistant layer with a rare earth oxide. The CMAS-resistant layer is essentially free of zirconia and hafnia, and may further include at least one of alumina, silica, and combinations thereof.

A coating including a CMAS-resistant layer with a rare earth oxide. The CMAS-resistant layer is essentially free of zirconia and hafnia, and may further include at least one of alumina, silica, and combinations thereof.

A laminate including a metallic base material, a nickel-containing plating film layer formed on the metallic base material, and a gold plating film layer formed on the nickel-containing plating film layer, in which pinholes in the gold plating film layer are sealed with a passive film having a thickness of 15 nm or greater. Also disclosed is a constituent member of a semiconductor production device including the laminate and a method for producing the laminate.

The present invention relates to a protective layer against CMAS, to a CMAS-resistant article comprising the protective layer according to the invention, and to a process for preparing a corresponding article.

Provided is a zinc-based plated steel sheet having a post-treated coating filmed thereon including: a steel sheet; a zinc plated layer formed on the steel sheet; and a post-treated coating formed on the plated layer, wherein the atomic ratio (O/M) of oxygen (O) to metals (M) contained in the post-treated coating is greater than 2 and less than 20, and a method for post-treating a zinc-based plated steel sheet. According to this, the zinc-based plated steel sheet having the post-treated coating formed thereon has the effects excellent in lubricity, weldability, adhesiveness, film-removing property and paintability. As the method of post-treating a zinc-based plated steel sheet of the present invention employs a simple coating method irrespective of the kind of plating layer, the process is simple and economical and the process operation cost is low.

An aluminum alloy sheet which is high in strength and excellent in heat conductivity, and which can be given an anodic oxide coating with a white color and a suitable yellowishness is provided. An aluminum alloy ingot containing Mg: 0.80 to 1.8 mass %, Fe: 0.05 to 0.30 mass %, Si: 0.20 mass % or less, Cu: 0.03 to 0.15 mass %, Mn: 0.05 to 0.20 mass %, and Cr: 0.05 to 0.15 mass %, restricts Zn to less than 0.15 mass %, and balance of Al and unavoidable impurities is treated by holding it at 560 to 620 C. for 1 to 5 hours, then hot rolled and, either through or not through process annealing, and cold rolled by a final cold rolling reduction of 15 to 95% to obtain an aluminum alloy sheet which has a 0.2% yield strength of 180 MPa or more and a conductivity of 40 (IACS %) or more.

A hot-dip galvanized steel sheet having a base steel sheet and a hot-dip galvanized layer, a ferrite phase is, by volume fraction, 50% or less in a range of ? thickness to ? thickness centered at a position of ? thickness from the surface of the base steel sheet, a hard structure is 50% or more, wherein the hot-dip galvanized steel sheet has the hot-dip galvanized layer in which Fe is 5.0% or less and Al is 1.0% or less, and columnar grains formed of a ? phase is 20% or more in an entire interface between the plated layer and the base steel sheet. On the surface of the base steel sheet, a volume fraction of a residual austenite is 3% or less.

A steel sheet for a container includes a steel sheet, a Sn coated layer which is provided as an upper layer of the steel sheet and contains Sn in an amount of 560 to 5600 mg/m.sup.2 in terms of Sn metal, and a chemical treatment layer which is provided as an upper layer of the Sn coated layer and contains a Zr compound in an amount of 3.0 to 30.0 mg/m.sup.2 in terms of Zr metal and a Mg compound in an amount of 0.50 to 5.00 mg/m.sup.2 in terms of Mg metal.

The invention relates to a method for manufacturing a metallized plastic product with a gold or silver hue, comprising the steps: galvanization of a surface of the plastic body for forming a galvanized chromium layer; deposition by evaporation of a metal layer directly on the galvanized chromium layer, the metal being copper, a mixture of metals comprising at least 70% by weight of copper, a copper alloy comprising at least 70% by weight of copper, or aluminum. The invention also relates to a metallized plastic product (1) with a gold or silver hue, comprising a plastic body (2), a galvanized chromium layer (3, 4, 5, 6), and a metal layer (7), the metal being copper, a mixture of metals comprising at least 70% by weight of copper, an alloy containing copper in an amount of at least 70% by weight, or aluminum.

There are provided a method for manufacturing a high manganese hot-dip galvanized steel sheet having superior coatability and ultra-high strength, and a high manganese hot-dip galvanized steel sheet manufactured by the method. The method includes: cold rolling a hot-rolled steel sheet to form a cold-rolled steel sheet, the hot-rolled steel sheet including, by wt %, C: 0.3% to 1%, Mn: 8% to 25%, Si: 0.1% to 3%, Al: 0.01% to 8%, Cr: 0.1% to 2%, Ti: 0.01% to 0.2%, B: 0.0005% to 0.01%, Ni: 0.01% to 2%, Sn: 0.06% to 0.2%, and a balance of Fe and inevitable impurities; heating the cold-rolled steel sheet; cooling the heated steel sheet to, or maintaining the heated steel sheet; and performing a hot-dip galvanizing process on the cooled or temperature-maintained steel sheet by dipping the cooled or temperature-maintained steel sheet into a hot-dip galvanizing bath.