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由万宝集团超声电子研究所和广州市职工电子超声研究所共同研制的PM-81大功率发射型压电陶瓷材料及元件,于1989年9月20目在广州市市科委主持下通过了技术鉴定。鉴定会有来自上海、南京、武汉及广州等地的专家、教授等80多名代表参加。 在听取了各项有关报告、审查了全部鉴定技术文件并经充分讨论后,与会代表认为PM-81 大功率发射型压电材料性能优良,其压电与介电性能均达到国际同类材料(如美国Vernitron公司的PZT-8型及荷兰Philips公司的PXG-43型压电材料)80年代
PM-81 high-power transmission piezoelectric ceramic materials and components jointly developed by Wanbao Group Institute of Ultrasonic Electronics and Guangzhou Workers Electronics Institute of Ultrasonics passed the technical Identification. Identification will be from Shanghai, Nanjing, Wuhan and Guangzhou, experts, professors and more than 80 representatives attended. After listening to all the relevant reports and examining all the technical documents of the appraisal, and after full discussion, the participants thought that PM-81 high-power emission piezoelectric material has excellent performance and its piezoelectric and dielectric properties have reached the international similar materials The United States Vernitron’s PZT-8 type and the Netherlands Philips PXG-43 type piezoelectric material) 80’s