出典:Wikipedia
出典:『Wikipedia』 (2011/06/15 19:02 UTC 版)
Anodizing, or anodising in British English, is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called "anodizing" because the part to be treated forms the anode electrode of an electrical circuit. Anodizing increases corrosion resistance and wear resistance, and provides better adhesion for paint primers and glues than does bare metal. Anodic films can also be used for a number of cosmetic effects, either with thick porous coatings that can absorb dyes or with thin transparent coatings that add interference effects to reflected light. Anodizing is also used to prevent galling of threaded components and to make dielectric films for electrolytic capacitors. Anodic films are most commonly applied to protect aluminium alloys, although processes also exist for titanium, zinc, magnesium, niobium, and tantalum. This process is not a useful treatment for iron or carbon steel because these metals exfoliate when oxidized; i.e., the iron oxide (also known as rust) forms by pits and flakes, these flakes both fall off as well as trap oxygen-bearing moisture, constantly exposing the underlying metal to corrosion.
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哀願すること
a paste-pot
a plaything with which one trifles for pleasure
a syphilitic (patient)
a wrinkle
ウスバカゲロウ
antlions
せき込み
「anodizing」は動詞「anodize」の現在分詞です