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铁电材料的主要应用,仍是压电器件。实际上,除大量的石英滤波器和振荡器外,所有的压电应用都是铁电材料,而且多半是陶瓷状态的。本文评价了铁电体在在压电器件中的应用,其重点是较新的发展,特别是那些有前途的新应用。本文还讨论了压电应用所需的铁电材料的特点及可能改进的地方。即使在工艺上有可观的改进,但最大的应用领域基本上与几年前相同,它们是电波滤波器、用于声纳和超声清洗的流体加载换能器、留声机唱头、力换能器及高压点火器。在所有这些器件中,本文仅详细地讨论了电波滤波器,但也扼要地评述了其它器件。所讨论的新应用有空气加载换能器和位移信号发生器。最主要的新应用是今年春天由通用电气公司和柯达公司联合宣布的压电激励闪光灯系统。
The main application of ferroelectric materials, piezoelectric devices are still. In fact, except for a large number of quartz filters and oscillators, all piezoelectric applications are ferroelectric and mostly ceramic. This article evaluates the use of ferroelectrics in piezoelectric devices and focuses on newer developments, particularly those promising new applications. This article also discusses the characteristics of ferroelectric materials required for piezoelectric applications and possible improvements. Even with considerable improvements in process, the biggest areas of application are basically the same as they were a few years ago. They are radio-frequency filters, fluid-loaded transducers for sonar and ultrasonic cleaning, phonograph heads, force transducers And high-pressure ignition. Of all these devices, this article only discusses the radio wave filter in detail, but also briefly reviews other devices. The new applications discussed are air-loaded transducers and displacement signal generators. The main new application is the piezo-energized flash system announced this spring by General Electric and Kodak.