This optical laminate is an optical laminate including a plastic film, an adhesion layer, an optical function layer, and an antifouling layer which are laminated in this order. The antifouling layer includes a vapor-deposited film in which an antifouling material is vapor-deposited. A water vapor transmittance is 1.5 g/(m.sup.2.Math.1 day) or lower. A hue change ΔE value in (SCI) reflected color in consideration of specular reflection light after being brought into contact with a sodium hydroxide aqueous solution having a concentration of 0.1 mol/L at a liquid temperature of 55° C. for four hours is smaller than 10.

An exterior material for cooking appliance capable of improving durability, heat resistance, scratch resistance, and cleaning performance by forming a Silicon-Diamond like carbon (SiDLC) coating layer including silicon (Si) under a high-temperature environment, and a method for manufacturing the exterior material. The exterior material includes: a base material; and a SiDLC coating layer provided on the base material, wherein the SiDLC coating layer includes Si of about 1 weight % to 50 weight %, carbon (C), and other inevitable impurities.

An exterior material for cooking appliance capable of improving visibility, Vickers hardness, and scratch resistance by forming laser holes in a surface of an exterior material including a Diamond like carbon (DLC) coating layer, and a method for manufacturing the exterior material. The cooking appliance exterior material includes a base material, a Diamond like carbon (DLC) coating layer provided on the base material, an adhesive layer provided between the base material and the DLC coating layer to attach the DLS coating layer to the base material to incase an adhesion force between the base material and the DLC coating layer, and a plurality of laser holes provided in a surface of the exterior material.

A method for manufacturing a piston ring includes the following steps: (A) a step of supplying an arc current to a cathode formed of a carbon material having a density of 1.70 g/cm.sup.3 or more, to ionize the carbon material; and (B) a step of applying a bias voltage in an environment where hydrogen atoms are substantially absent to form a DLC film on a surface of a base material for a piston ring.

The step (A) is continuously carried out, subsequently the step (A) is interrupted, and then the step (A) is restarted, which sequence is repeated thereby to form the DLC film having an extinction coefficient of 0.1 to 0.4 as measured using light having a wavelength of 550 nm and a nanoindentation hardness of 16 to 26 GPa.

Containers are provided that include a body structure having a top end that defines an opening, a sealed base end, and a sidewall structure extending between the top and base ends, in which the sidewall structure has an interior surface and an exterior surface, the interior surface defining an interior space, and a protective coating that includes a diamond-like carbon on at least a portion of the exterior surface of the sidewall structure. Methods for enhancing the mechanical strength of containers are also provided.

A vacuum process method for a magnetic recording medium having a surface protective layer for protecting a magnetic recording layer formed on a substrate includes a ta-C film forming step of forming a ta-C film on the magnetic recording layer, a transportation step of transporting a substrate on which the ta-C film is formed, a radical generation step of generating radicals by exciting a process gas, and a radical process step of irradiating a surface of the ta-C film with the radicals.

A coated tool may include a base member and a coating layer located on the base member. The coating layer may include a first section located on the base member and a second section located on the first section. The first section may include an AlTi portion including aluminum and titanium, and an AlCr portion including aluminum and chromium, and each of the AlTi portion and the AlCr portion may be in contact with the base member. The second section may include a plurality of AlTi layers including aluminum and titanium, and a plurality of AlCr layers including aluminum and chromium, and the AlTi layers and the AlCr layers may be located alternately one upon another.

Provided are: an oriented electrical steel sheet having a high tension applied to a steel sheet and excellent adhesion to a film; and a method for producing the same. This oriented electrical steel sheet includes: a steel sheet; a film A containing a crystalline material disposed on the steel sheet; and a film B containing a vitreous material disposed on the film A, wherein an element profile, which is obtained by using a high-frequency glow discharge light-emission surface analysis method, in the direction from the film B to the steel sheet satisfies formulae (1) and (2). 0.35≤(t.sub.A/t.sub.Fe/2)≤0.75 . . . (1), 0.25≤(t.sub.A/2/t.sub.Fe/2)≤1.00 . . . (2), where t.sub.A represents the peak time of an alkali metal element profile, t.sub.A/2 represents the half time of an alkali metal.

The present invention provides a colored radiative cooler based on a Tamm structure, including a substrate on which metal film and dielectric layers A to G are sequentially provided from bottom to top, where the Tamm structure is formed from the metal film and the dielectric layers A to D; a distributed Bragg reflector is formed from the dielectric layers A to D; and a selective emitter is formed from the dielectric layers E to G. Compared to the conventional radiative cooler, the colored radiative cooler not only has better cooling performance, but it has a wide applications in many aspects such as aesthetics and decoration.

An optical device as described herein includes a host substrate fabricated from a dielectric material transparent in the Infrared range. Additionally, the optical device as discussed herein includes multiple elements disposed on the host substrate. The multiple elements are spaced apart from each other on the host substrate in accordance with a desired pattern. Each of the multiple elements disposed in the host substrate is fabricated from a second material having a refractive index of greater than 4.5. Such an optical device provides an improvement over conventional optical devices that operate in the Infrared range.