超高速レーザー溶接

E H Penilla¹, L F Devia-Cruz^1,2, A T Wieg¹

¹Materials Science and Engineering Program and Mechanical and Aerospace Engineering Department, University of California, San Diego, CA, USA.

Science (New York, N.Y.)

|August 24, 2019

まとめ

超高速パルスレーザー溶接により,繊細な材料の近くでセラミクスを結合できます. この新しい技術は高真空と強い結合を実現し,高度な電子と厳しい環境での陶器の応用を拡大します.

科学分野:

材料科学
製造エンジニアリング
光学とフォトニクス

背景:

セラミック溶接は先進的な製造に不可欠ですが,現在の方法は限られています.
ポリマーやエレクトロニクスのような温度に敏感な材料の近くでセラミクスを結合することは困難です
現存する技術では,必要な精度と温度制御ができないことが多い.

研究の目的:

超高速パルスレーザーのセラミック溶接を導入する.
現在のセラミック結合方法の限界を克服するために,特に繊細な部品の近くに.
高い性能と信頼性を要求する複雑な装置にセラミクスの統合を可能にする.

主な方法:

超高速パルスレーザーを使って陶器のインターフェイスにフォーカスを置く
局所的なセラミック溶解のための非線形吸収プロセスを刺激する.
レーザーエネルギーと物質の結合と光学特性を正確に制御する

主要な成果:

陶器の局所的な溶解を消去せずに達成した.
高真空を保持できる溶接セラミックアセンブリを開発した.
伝統的な金属からセラミックへの拡散結合に匹敵する切断強度を示した.

結論:

超高速レーザー溶接は,セラミクスの結合に有効な解決策を提供します.
この方法は,厳しい環境や光電子/電子パケットのためのデバイスにセラミック統合を容易にする.
この技術は,可視無線周波数の透明性と高い信頼性を要求するアプリケーションでセラミックの使用を拡大します.

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