devitroceramics; glass ceramics; devitrified ceramics

Japanese: デビトロセラミックス（英語表記）devitroceramics; glass ceramics; devitrified ceramics

Also called devitrified ceramics, glass ceramics, and crystallized glass. A ceramic product that has lost its glass properties and crystallized. Adding a small amount of titanium oxide to glass or exposing it to neutrons, gamma rays, X-rays, or ultraviolet rays creates many fine particles. When this is heat-treated, the fine particles become nuclei and the glass crystallizes. Examples of this include Pyroceram and Photoceram from Corning Glass Works in the United States, which have a low expansion rate, high heat resistance, and great mechanical strength. In addition to household items such as pots and kettles, they are also used as high-end building wall materials, as a high-strength electrically insulating material for integrated circuit boards, and as a coating for protecting the surfaces of missiles and rockets.

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

Japanese:

デビトリファイドセラミックス，ガラスセラミックス，結晶化ガラスなどともいう。ガラスの性質を失って結晶した窯業製品。ガラスに少量の酸化チタンを加えておくか，また中性子線，γ線，X線，紫外線などを当てると，多くの微粒子ができる。これを熱処理すると，微粒子が核となって，ガラスが結晶体となる。アメリカのコーニング・グラス・ワークス社のパイロセラムやフォトセラムなどがこれにあたり，膨張率が小さく，耐熱性が高く，機械的強さも大きい。鍋，湯沸しなどの家庭用品のほか，高級建築用壁材，電気絶縁性高強度材料として集積回路基板や，ミサイルやロケットの表面保護のためのコーティングとしても利用される。

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Dehiwala‐Mount Lavinia

>>: David Copperfield