High-damping alloy

Japanese: 防振合金 - ぼうしんごうきん（英語表記）high-damping alloy

An alloy that has the property of absorbing and attenuating sound and vibration energy. Also called a vibration-damping alloy. Developed to compensate for the shortcoming of metals, which are the tendency to transmit sound and vibration, it absorbs vibration energy by using a two-phase mixed structure and irreversible movement of magnetic domain walls. Examples include aluminum-zinc alloy, iron-nickel-12% chromium steel, manganese-copper alloy, copper-aluminum-nickel alloy, and magnesium-zirconium alloy. Iron-chromium-aluminum alloy is a ferritic stainless steel vibration-damping alloy also known as Silentalloy. Iron-molybdenum alloy is called Zentalon. Note that this is different from vibration-damping steel plates, which are used for vibration and soundproofing by sandwiching rubber or resin between steel plates.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

音や振動のエネルギーを吸収し減衰させる特性をもつ合金。制振合金ともいう。音や振動を伝えやすいという金属の欠点を補うよう開発されたもので，2相混合組織，磁区壁の非可逆移動などによって振動エネルギーを吸収する。アルミ亜鉛合金，鉄-ニッケル-12%クロム鋼，マンガン-銅合金，銅-アルミ-ニッケル合金，マグネシウム-ジルコニウム合金などがある。鉄-クロム-アルミ合金は，フェライト系のステンレス防振合金でサイレンタロイともいう。鉄-モリブデン合金はゼンタロンと呼ばれる。なお，鋼板間にゴムや樹脂をはさんで防振，防音に用いる制振鋼板とは別のもの。

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