The present invention belongs to the technical field of shoe spikes, and more particularly relates to a carborundum wear-resistant shoe spike. The carborundum wear-resistant shoe spike comprises a shoe spike main body and a nickel coating attached to the surface of the shoe spike main body; the surface of the shoe spike main body is also provided with a carborundum layer, and the nickel coating is disposed between the shoe spike main body and the carborundum layer. Compared with the prior art, the present invention lies in that the outer surface of the nickel coating is provided with the carborundum layer, and since the carborundum layer has the characteristics of good toughness, high hardness, good wear resistance and the like, the wear resistance property of the shoe spike can be greatly improved, and the service life of sports shoes using the shoe spike is prolonged.

The present invention provides a resin-coated stainless steel foil capable of maintaining a strong adherence force to the film even in an electrolytic solution to exhibit good corrosion resistance and excellent in the workability, design property and piecing resistance, and a container and a secondary battery each using the resin-coated stainless steel foil. A resin-coated stainless steel foil having a chromate treatment layer of 2 to 200 nm in thickness on at least one surface of a stainless steel foil and having at least a polyolefin-based resin (A) layer containing a functional group having polarity on the chromate treatment layer; and a container and a secondary battery each using the resin-coated stainless steel foil are also provided.

The present invention provides a resin-coated stainless steel foil capable of maintaining a strong adherence force to the film even in an electrolytic solution to exhibit good corrosion resistance and excellent in the workability, design property and piecing resistance, and a container and a secondary battery each using the resin-coated stainless steel foil. A resin-coated stainless steel foil having a chromate treatment layer of 2 to 200 nm in thickness on at least one surface of a stainless steel foil and having at least a polyolefin-based resin (A) layer containing a functional group having polarity on the chromate treatment layer; and a container and a secondary battery each using the resin-coated stainless steel foil are also provided.

An earth bolt with a surface treatment layer are a method of surface treatment of the earth bolt are provided. The surface treatment includes a tin-zinc plated layer, a colored chromate film layer and a silicate coating layer. Since the earth bolt with the surface treatment layer has improved electro-conductivity and anti-rusting property, it may protect electrical/electronic components fitted to a vehicle from electromagnetic shock and remove noise therefrom, thereby improving reliability of a vehicle body.

An earth bolt with a surface treatment layer are a method of surface treatment of the earth bolt are provided. The surface treatment includes a tin-zinc plated layer, a colored chromate film layer and a silicate coating layer. Since the earth bolt with the surface treatment layer has improved electro-conductivity and anti-rusting property, it may protect electrical/electronic components fitted to a vehicle from electromagnetic shock and remove noise therefrom, thereby improving reliability of a vehicle body.

A steel sheet for cans which exhibits excellent weldability; and a production method therefor include a steel sheet for cans with the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 65-200 mg/m.sup.2. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m.sup.2. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 100 nm or lower, and have a number density per unit area of at least 200 per μm.sup.2.

A steel sheet for cans which exhibits excellent weldability; and a production method therefor include a steel sheet for cans with the surface of a steel sheet in order from the steel sheet side, a chromium metal layer and a hydrous chromium oxide layer. The deposited amount of the chromium metal layer is 65-200 mg/m.sup.2. The deposited amount of the hydrous chromium oxide layer in terms of chromium is 3-30 mg/m.sup.2. The chromium metal layer includes: a base part having a thickness of 7.0 nm or higher; and granular protrusions which are on the base part, have a maximum grain size of 100 nm or lower, and have a number density per unit area of at least 200 per μm.sup.2.

A color coating layer is formed on the surface of a stainless steel plate by a chemical coloring method or an electrolytic coloring method. Thereafter, a colored stainless steel plate having the color coating layer is cold-rolled, the thickness of the color coating layer is adjusted to between 0.05 μm and 1.0 μm, and an entire plate thickness is adjusted to 0.5 mm or less. By the cold rolling a Vickers hardness Hv is between 250 and 550 to form a deformed band. As surface roughness, an arithmetic average roughness Ra is adjusted to between 0.05 μm and 5.0 μm. In this manner, the strength and rigidity of a thin colored stainless steel plate can be secured, and a color stainless steel plate and a colored stainless steel coil which do not easily cause galling and are excellent in press moldability can be obtained.

A color coating layer is formed on the surface of a stainless steel plate by a chemical coloring method or an electrolytic coloring method. Thereafter, a colored stainless steel plate having the color coating layer is cold-rolled, the thickness of the color coating layer is adjusted to between 0.05 μm and 1.0 μm, and an entire plate thickness is adjusted to 0.5 mm or less. By the cold rolling a Vickers hardness Hv is between 250 and 550 to form a deformed band. As surface roughness, an arithmetic average roughness Ra is adjusted to between 0.05 μm and 5.0 μm. In this manner, the strength and rigidity of a thin colored stainless steel plate can be secured, and a color stainless steel plate and a colored stainless steel coil which do not easily cause galling and are excellent in press moldability can be obtained.

A surface treated copper foil 1 includes a copper foil 2, and a first surface treatment layer 3 formed on one surface of the copper foil 2. The first surface treatment layer 3 of the surface treated copper foil 1 has L* of a CIE L*a*b* color space of 44.0 to 84.0. A copper clad laminate 10 includes the surface treated copper foil 1 and an insulating substrate 11 adhered to a surface of the surface treated copper foil 1 opposite to the first surface treatment layer 3.