2020 CAC广州国际先进陶瓷展览会
压(ya)(ya)电(dian)(dian)(dian)陶瓷(ci)是一种人(ren)工(gong)焙(bei)烧制造的(de)(de)可(ke)应用于多领(ling)域(yu)的(de)(de)多晶材(cai)(cai)料(liao)，是能够将机械能和电(dian)(dian)(dian)能互(hu)相转(zhuan)换的(de)(de)信(xin)息(xi)功能陶瓷(ci)材(cai)(cai)料(liao)。通过(guo)外加电(dian)(dian)(dian)场(chang)和外部(bu)施加压(ya)(ya)力的(de)(de)作用，使材(cai)(cai)料(liao)的(de)(de)外部(bu)弹性形变和内部(bu)电(dian)(dian)(dian)极(ji)化发生相互(hu)转(zhuan)换，称为电(dian)(dian)(dian)致(zhi)伸(shen)缩效应。烧结而成的(de)(de)铁电(dian)(dian)(dian)体通过(guo)电(dian)(dian)(dian)场(chang)的(de)(de)极(ji)化处(chu)理，让杂(za)乱的(de)(de)内部(bu)极(ji)化现(xian)象(xiang)变得规律(lv)有序，产生压(ya)(ya)电(dian)(dian)(dian)特性。
什么是压电效应？
压电(dian)(dian)(dian)效应,压电(dian)(dian)(dian)陶(tao)瓷(ci)除具有(you)压电(dian)(dian)(dian)性(xing)外, 还具有(you)介电(dian)(dian)(dian)性(xing)、弹性(xing)等, 已被广(guang)泛(fan)应用(yong)于医学(xue)成像、声传感器(qi)、声换能(neng)器(qi)、超声马达等。压电(dian)(dian)(dian)陶(tao)瓷(ci)利用(yong)其(qi)材料(liao)在(zai)机(ji)械应力作用(yong)下，引起内(nei)部正负电(dian)(dian)(dian)荷中心相(xiang)对(dui)位移而(er)发生极化(hua)，导致材料(liao)两端表面出现符(fu)号相(xiang)反的束缚(fu)电(dian)(dian)(dian)荷即压电(dian)(dian)(dian)效应而(er)制作，具有(you)敏感的特性(xing)。
超声波换能器是什么？
超(chao)声波(bo)换能(neng)器的功(gong)能(neng)是将输入的电功(gong)率转换成机械功(gong)率（即超(chao)声波(bo)）再传递出去(qu)，而自(zi)身消耗很少(shao)的一部分功(gong)率。
超(chao)声(sheng)(sheng)波(bo)换能器(qi)，包(bao)括外壳(1)、匹配层即声(sheng)(sheng)窗(2)、压电(dian)陶(tao)瓷(ci)圆盘(pan)换能器(qi)(3)、背衬(chen)(4)、引(yin)出电(dian)缆(lan)(5)，其特征在于(yu)它(ta)(ta)还包(bao)括Cymbal阵(zhen)列接(jie)收(shou)器(qi)，它(ta)(ta)由(you)引(yin)出电(dian)缆(lan)(6)、8～16只(zhi)Cymbal换能器(qi)(7)、金属(shu)圆环(8)、(9)和橡(xiang)胶(jiao)垫圈(10) 组成；Cymbal阵(zhen)列接(jie)收(shou)器(qi)位(wei)于(yu)圆盘(pan)式压电(dian)换能器(qi)3之(zhi)上(shang)；压电(dian)陶(tao)瓷(ci)圆盘(pan)换能器(qi)用(yong)(yong)作基本的超(chao)声(sheng)(sheng)波(bo)换能器(qi)，由(you)它(ta)(ta)发射和接(jie)收(shou)超(chao)声(sheng)(sheng)波(bo)信号；Cymbal阵(zhen)列接(jie)收(shou)器(qi)位(wei)于(yu)圆盘(pan)式压电(dian)换能器(qi)之(zhi)上(shang)，作为超(chao)声(sheng)(sheng)波(bo)接(jie)收(shou)器(qi)，用(yong)(yong)于(yu)接(jie)收(shou)圆盘(pan)换能器(qi)频带之(zhi)外的多(duo)普勒(le)回波(bo)信号。主要适用(yong)(yong)于(yu)超(chao)声(sheng)(sheng)波(bo)塑料焊(han)接(jie)机(ji)、超(chao)声(sheng)(sheng)波(bo)金属(shu)焊(han)接(jie)机(ji)，超(chao)声(sheng)(sheng)波(bo)清洗机(ji)，气相机(ji)，三氯机(ji)等。
超声波换能器的应用？
超声波(bo)(bo)换(huan)能(neng)器的应(ying)(ying)用十分(fen)广泛,它按(an)应(ying)(ying)用的行业分(fen)为(wei)(wei)工(gong)业、农业、交通运输(shu)、生(sheng)活、医疗(liao)及军事等(deng)(deng)。按(an)实现的功能(neng)分(fen)为(wei)(wei)超声波(bo)(bo)加工(gong)、超声波(bo)(bo)清洗、超声波(bo)(bo)探测(ce)、检测(ce)、监(jian)测(ce)、遥测(ce)、遥控等(deng)(deng)；按(an)工(gong)作环境分(fen)为(wei)(wei)液体(ti)、气体(ti)、生(sheng)物(wu)体(ti)等(deng)(deng);按(an)性(xing)质分(fen)为(wei)(wei)功率超声波(bo)(bo)、检测(ce)超声波(bo)(bo)、超声波(bo)(bo)成(cheng)像等(deng)(deng)。
压电陶瓷的其他应用？
压(ya)电(dian)(dian)陶(tao)瓷主要用(yong)于制造(zao)超(chao)声(sheng)换(huan)能(neng)器(qi)、水声(sheng)换(huan)能(neng)器(qi)、电(dian)(dian)声(sheng)换(huan)能(neng)器(qi)、陶(tao)瓷滤波器(qi)、陶(tao)瓷变压(ya)器(qi)、陶(tao)瓷鉴频器(qi)、高压(ya)发生器(qi)、红外探测器(qi)、声(sheng)表面(mian)波器(qi)件、电(dian)(dian)光器(qi)件、引(yin)燃和(he)压(ya)电(dian)(dian)陀(tuo)螺(luo)等，除了用(yong)于高科技领域，它更(geng)(geng)多(duo)的是在(zai)日(ri)常(chang)生活中(zhong)为人(ren)们服务，为人(ren)们创(chuang)造(zao)更(geng)(geng)美好的生活而努力。
2020 CAC广州国际先进陶瓷(ci)组(zu)委会 整(zheng)理
