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    2. ◆ 追求卓越,共振和諧!  ◆ 定制超聲波壓電陶瓷元件:霧化片 超聲醫療頭 美容頭 美容鏟皮刀 潔牙器振子 陶瓷晶片   ◆ “誠信經營、精益求精”是我們永遠的追求!      >> English   >> 簡體<-> 繁體   >> 加入收藏    
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      壓電陶瓷的應用


      www.elainecharton.com 2017年8月5日

          

      1、聲音轉換器聲音轉換器是最常見的應用之一。像拾音器、傳聲器、耳機、蜂鳴器、超聲波探深儀、聲納、材料的超聲波探傷儀等都可以用壓電陶瓷聲音轉換器。如兒童玩具上的蜂鳴器就是電流通過壓電陶瓷的逆壓電效應產生振動,而發出人耳可以聽得到的聲音。壓電陶瓷通過電子線路的控制,可產生不同頻率的振動,從而發出各種不同的聲音。例如電子音樂賀卡,就是通過逆壓電效應把交流音頻電信號轉換為聲音信號。
      2、壓電引爆器 自從第一次世界大戰中英軍發明了坦克,并首次在法國索姆河的戰斗中使用而重創了德軍后,坦克在多次戰斗中大顯身手。然而到了20世紀六七十年代,由于反坦克武器的發明,坦克失去了昔日的輝煌。反坦克炮發射出的穿甲彈接觸坦克,就會馬上爆炸,把坦克炸得粉碎。這是因為彈頭上裝有壓電陶瓷,它能把相碰時的強大機械力轉變為瞬間高電壓,爆發火花而引爆炸藥。
      3、壓電打火機 煤氣灶上用的一種新式電子打火機,就是利用壓電陶瓷制成的。只要用手指壓一下打火按鈕,打火機上的壓電陶瓷就能產生高電壓,形成電火花而點燃煤氣,可以長久使用。所以壓電打火機不僅使用方便,安全可靠,而且壽命長,例如一種鈦鉛酸鉛壓電陶瓷制成的打火機可使用100萬次以上。 
      4、防核護目鏡 核試驗員帶上用透明壓電陶瓷做成的護目鏡后,當核爆炸產生的光輻射達到危險程度時,護目鏡里的壓電陶瓷就把它轉變成瞬時高壓電,在1/1000 s里,能把光強度減弱到只有1/10000,當危險光消失后,又能恢復到原來的狀態。這種護目鏡結構簡單,只有幾十克重,安裝在防核護目頭盔上攜帶十分方便。
      5、超聲波換能器 適用于用于超聲波焊接設備以及超聲波清洗設備,主要采用大功率發射型壓電陶瓷制作,超聲波換能器是一種能把高頻電能轉化為機械能的裝置,超聲波換能器作為能量轉換器件,它的功能是將輸入的電功率轉換成機械功率(即超聲波)再傳遞出去,而它自身消耗很少的一部分功率。
      6、聲納 在海戰中,最難對付的是潛艇,它能長期在海下潛航,神不知鬼不覺地偷襲港口、艦艇,使敵方大傷腦筋。如何尋找敵潛艇?靠眼睛不行,用雷達也不行,因為電磁波在海水里會急劇衰減,不能有效地傳遞信號,探測潛艇靠的是聲納------水下耳朵。壓電陶瓷就是制造聲納的材料,它發出超聲波,遇到潛艇便反射回來,被接收后經過處理,就可測出敵潛艇的方位、距離等。 

       

       
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