Provided is a surface hardening method for surface hardening a sulfuric acid-anodized aluminum alloy oxide layer, which includes: pre-treatment in which various foreign substances, including an oxide film, attached to a surface of an aluminum alloy are removed; sealing treatment in which the aluminum alloy having been subjected to the pre-treatment is immersed in a sealing solution, whereby fine pores formed in a film are sealed; and heat treatment in which the aluminum alloy having been subjected to the sealing treatment is charged to, and thermally treated in, a heat treatment furnace and then naturally cooled. By lowering the withstand voltage of an aluminum alloy oxide layer and increasing the hardness by subjecting the same to sealing treatment and subsequent post-heat treatment, the present invention has the effect of providing an environmentally-friendly and crack-free lightweight material that can replace steel products.

A slide member having a slide surface coated with a lacquer including a resin. The lacquer is in turn at least partly coated with a lipophilic composition coating. The lipophilic composition coating provides a slide layer on the slide member with low friction.

A slide member having a slide surface coated with a lacquer including a resin. The lacquer is in turn at least partly coated with a lipophilic composition coating. The lipophilic composition coating provides a slide layer on the slide member with low friction.

The present disclosure is related to jars and containers and, more particularly, to the manufacture of readily recyclable jars and containers.

An exemplary jar is comprised of an aluminum base and a first aluminum inner cup provided with a first cavity defined with the aluminum base. An outer thread is provided about an exterior surface of the aluminum base, and an aluminum lid with a second aluminum inner cup is provided within a second cavity defined within the aluminum lid. An inner thread mateable with the outer thread is provided about an interior surface of the second aluminum inner cup.

A method of manufacturing readily recyclable jars can comprise providing a primary metal material and optionally applying a precoating to the primary metal material. The primary metal material may be formed into a jar with mating threads and a lid with mating threads. The primary metal material may optionally be finished. A liner may optionally be inserted. The lid and jar are then assembled, and a plastic cup may optionally be installed.

A method of manufacturing an extruded material of carbon nanotube reinforced aluminum matrix composite having improved corrosion resistance, and the extruded material manufactured thereby are proposed. The method may include manufacturing an extruded material comprising an aluminum-carbon nanotube composite material and forming a hard oxide film on the surface of the extruded material by anodizing the extruded material in a mixed solution of sulfuric acid and oxalic acid. The method can form a hard oxide film with excellent corrosion resistance, abrasion resistance, and insulation properties on the surface of a composite material (an extruded material of carbon nanotube reinforced aluminum matrix composite material), which is known to be difficult to conduct hard anodizing due to the difference in corrosion characteristics between materials and, accordingly, the usability of the composite material can be significantly improved.

In a method, an aluminum body is chemically treated with at least one of an alkaline solution and an acid solution. Anode-oxidization is performed on the chemically treated aluminum body to form an aluminum oxide layer. The aluminum oxide layer is treated with hot water at a temperature more than 75° C. or steam. The aluminum oxide layer after being treated with hot water or steam includes plural columnar grains, and an average width of the columnar grains is in a range from 10 nm to 100 nm.

In a method, an aluminum body is chemically treated with at least one of an alkaline solution and an acid solution. Anode-oxidization is performed on the chemically treated aluminum body to form an aluminum oxide layer. The aluminum oxide layer is treated with hot water at a temperature more than 75° C. or steam. The aluminum oxide layer after being treated with hot water or steam includes plural columnar grains, and an average width of the columnar grains is in a range from 10 nm to 100 nm.

A medical scope device such as an endoscope is produced using a cast aluminum process including a molten casting aluminum alloy including a maximum of 0.2 - 0.3% Si and at least 5% Zn. The process includes providing an investment casting mold, casting the aluminum alloy in the mold to create a component and removing the mold from the component, post-machining the component to meet a desired specification, and after post-machining the component, performing surface finishing, such as centrifugal barrel finishing (CBF) sufficient to remove impurities on casting surfaces by 2 - 3 mils, then coating the component with a micro-crystalline aluminum anodic coating of at least 0.5 mil thickness. A medical scope and product-by-process is also provided employing such techniques.

An aluminum member (1) includes: a base material (2) composed of aluminum or an aluminum alloy; and an anodic oxide film (3) formed on a surface of the base material. The anodic oxide film includes: an amorphous layer (31), which is composed of an amorphous aluminum oxide and is formed on the base material (2); and a crystal layer (32), which is composed of a crystalline aluminum oxide and is formed on the amorphous layer (31). The aluminum member (1) can be obtained by forming the anodic oxide film (3) on the base material (2) by performing an anodization process on the base material (2) in an electrolytic solution, which contains boron atoms and has a pH of 7.0-12.0.

Proposed are a laminated anodic aluminum oxide structure in which a plurality of anodic aluminum oxide films are stacked, a guide plate of a probe card using the same, and a probe card having the same. More particularly, proposed are a laminated anodic aluminum oxide structure with a high degree of surface strength, a guide plate of a probe card using the same, and a probe card having the same.