Aluminum alloy plate, and joint body and automobile member using same aluminum alloy plate

Abstract

The invention provides an aluminum alloy plate which has an adhesive strength difficult to reduce and excellent adhesive durability, and a joint body and an automobile member using the same aluminum alloy plate. The aluminum alloy plate is difficult to boundary disengagement with a joint boundary of an adhesive agent even though the aluminum alloy plate being exposed in high-temperature and moist environment and in salt water spray environment. The aluminum alloy plate is characterized in that: the aluminum alloy plate comprises an aluminum alloy substrate (1) and a surface scale film (2) formed on a surface of the aluminum alloy substrate (1). In the surface scale film (2), zirconium weight is 0.01-10 atoms %, magnesium weight is greater than or equal to 0.1 atom % and less than 10 atoms %. In the analysis of the surface scale film (2) with FT-IP (Fourier transform infrared spectrophotometer) at a 75-degree incident angle, absorbance is for indicating the light spectrum of a metal hydroxide, a reference line is from 400 cm-1 to 1800 cm-1, the height of a spectrum peak is less than or equal to 0.020 in a wave number part of 1060 cm-1.

Description

technical field [0001] The present invention relates to an aluminum alloy plate, and relates to an aluminum alloy plate suitable for use in vehicles such as automobiles, ships, and airplanes, and in particular, an aluminum alloy plate suitable for use in an automobile panel, a joined body using the aluminum alloy plate, and an automobile member. Background technique [0002] Conventionally, various aluminum alloy plates have been commonly used as components of conveyors such as automobiles, ships, and airplanes according to the various characteristics of each alloy. In particular, realizing that in recent years CO 2 In response to global environmental issues such as emissions, the use of aluminum alloy plates with a specific gravity of about 1 / 3 that of iron and excellent energy absorption properties has been increased in order to reduce fuel consumption by reducing the weight of components. [0003] For example, examples of aluminum alloy sheets used as automotive componen...

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Problems solved by technology

Therefore, according to the evaluation results shown in the above-mentioned Patent Document 7, the stability of the target surface properties cannot be guaranteed.

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