Borazon

Japanese: Borazon
Borazon

…This change is catalyzed by alkali metals or alkaline earth metals. It was developed in 1957 by General Electric (GE) in the United States, and commercialized about 10 years later under the product name Borazon. This cubic boron nitride (cBN) has a hardness (Knoop hardness about 4700) second only to diamond (Knoop hardness 7000-9000), has better heat resistance than diamond, and is less reactive with ferrous metals. …

*Some of the terminology explanations that mention "Borazon" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この変化はアルカリ金属またはアルカリ土類金属によって触媒作用を受ける。1957年アメリカのゼネラル・エレクトリック(GE)社で開発され,約10年後に商品名ボラゾンBorazonとして商品化された。この立方晶窒化ホウ素cBNはダイヤモンド(ヌープ硬さ7000~9000)に次ぐ硬さ(ヌープ硬さ約4700)をもち,ダイヤモンドに比べて耐熱性に優れ,鉄系金属との反応性も小さい。…

※「Borazon」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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