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2021 / 07 / 14
2021521524.,,.,.,.20. The group standard research group meeting of spherical piezoelectric ceramic transducer of electronic ceramics and devices branch of China electronic components industry association was held in Zibo City, Shandong Province from May 21 to May 24, 2021. Wu Xufeng, honorary chairman of the electric ceramics branch, Luo Ping, secretary general, sun Zhaohai, general manager of Zibo Yuhai Electronic Ceramics Co., Ltd., leader of group standard of spherical piezoelectric ceramic transducer, Zhang Huorong, vice chairman of the electric ceramics branch and technical director of Zhejiang Jiakang Electronics Co., Ltd., vice chairman of the electric ceramics branch More than 20 people from standard setting units such as Hu Wangfeng, the science and technology specialist of CSIC Research Institute, attended the meeting.
Optical phase modulation based on PZT piezoelectric ceramics
2020 / 05 / 25
With the update of production technology and the continuous expansion of applications, PZT piezoelectric ceramics have been widely entered into people's field of vision, and their popularity is also rising. PZT piezoelectric ceramics have the inverse piezoelectric effect, that is, the micro-displacement of the corresponding voltage signal can be generated when the voltage signal is applied. Moreover, they have the characteristics of high resolution at the nanometer level and response speed at the microsecond level, so as to satisfy the precision of optical phase modulation.PZT piezoelectric ceramic phase shifter is also the main component of various interference instruments, its accuracy will directly affect the measurement accuracy of interferometer. According to the difference of optical interference path, the number and types of PZT piezoelectric ceramics used are different, which can be divided into single branch and multiple branch. According to the different use scenarios of customers, the core will provide a variety of piezoelectric ceramics schemes for phase modulation/phase shift tomorrow. When optical fiber is used as the transmission medium of light, such as optical fiber differential interferometer and tunable optical fiber laser, the bit contact of light changes with the propagation length. For example, the fiber is wound to PZT piezoelectric ceramic. When the voltage signal is applied, the piezoelectric ceramic will be slightly deformed, which will change the length and refractive index of the fiber wound to PZT. When the piezoelectric ceramics undergo periodic micro-deformation, the length of the fiber changes periodically, and the phase of the transmitted light also changes periodically. For this scenario, the types of PZT piezoelectric ceramics that can be selected are very diverse, influenced by a number of factors such as size, delay time, and adjustment mode.
Why is barium titanate called the pillar of the electronic ceramics industry?
2020 / 05 / 22
Barium titanate crystal is a kind of typical perovskite structure, with high dielectric constant, low dielectric loss, the larger the resistivity, high crushing strength and excellent insulating performance characteristics, widely used in multilayer ceramic capacitors (MLCC), a thermistor (PTCR), electro-optic devices and dynamic random access memory (FRAM) and so on, is the basis of the function of electronic ceramic device material, so the general scholars and the manufacturer called the backbone of the electronic ceramics industry. 1. Barium titanate for multilayer ceramic capacitor (MLCC)
Two effects of piezoelectric ceramics
2019 / 12 / 04
Piezoelectric ceramics, in which the positive piezoelectric effect and the reverse piezoelectric effect, what is the specific? Is it a physical piezoelectric property? What is the generation life of piezoelectric ceramics? What is the output current and voltage of piezoelectric ceramics in lighters? These problems are all related to piezoelectric ceramics, so let's learn about them. 1. What are the positive and reverse piezoelectric effects of piezoelectric ceramics? Is it a physical piezoelectric property? In piezoelectric ceramics, its positive piezoelectric effect, which is simply understood, is to transform mechanical effect into electrical effect. The converse piezoelectric effect, on the contrary, transforms the electrical effect into mechanical effect. In addition, it should be noted that piezoelectric ceramics have spontaneous polarization property, and they can change under the action of external electric field. At the same time, these two effects belong to the physical piezoelectric properties of piezoelectric ceramics. 2. What is the service life of piezoelectric ceramic power generation? What is the output current and voltage of piezoelectric ceramics in lighters? Generally speaking, the power generation life of piezoelectric ceramics is about 100000 times. For the piezoelectric ceramics in lighters, they are deformed under the action of external forces, so as to generate a voltage of 4000-6000 volts in an instant, even tens of thousands of volts. As for its current, it is relatively small, about a few microamps. For pie
2019 / 12 / 04
In the heat exchange, there is an ultrasonic logging transducer. Then, on this transducer, the following is mainly to solve some related problems: what is the composition of the ultrasonic logging transducer? Is it the same as a vibrator? And how to judge the quality of the transducer? Now let's have a specific answer to make it clear. 1. What is the composition of ultrasonic logging transducer? The transducer of ultrasonic logging consists of three parts: acoustic system, electronic circuit and sound insulation. Among them, the sound system mainly includes the transmitting transducer and the receiver, so as to carry out some judgment work and pass the receiving time of the sound wave. 2. Is the ultrasonic logging transducer the same as the vibrator? Ultrasonic logging transducer and vibrator are different, because vibration is just a common name, while ultrasonic logging transducer belongs to transducer, not vibrator. In addition, the center frequency of the transducer has drift in a certain range. Therefore, they cannot be equated. 3. How to judge the quality of ultrasonic logging transducer? For this, it is not difficult to implement it. The specific aspects involved are as follows: Judging from the manufacturing process and appearance of the transducer, if its quality is good, it is also good in the manufacturing process and appearance, not bad. In addition, we can also see whether the design is reasonable, whether the parameters match, and whether the ideal
2019 / 04 / 27
Ultrasonic level gauge is to transmit energy wave through a device which can transmit energy wave (usually pulse signal). The energy wave is reflected by obstacles, and the reflected signal is received by a receiving device. The change of liquid (material) level is determined by measuring the time difference of energy wave motion. Microwave signals are processed by electronic devices and eventually converted into electrical signals related to liquid level. A probe emits an ultrasonic pulse signal to the surface of the medium under test. The reflected ultrasonic signal is reflected when the medium under test (obstacle) is encountered in the transmission process. The reflected ultrasonic signal is detected by an electronic module and processed by a special software. The time difference between transmitting the ultrasonic wave and the echo is analyzed. Combined with the propagation speed of the ultrasonic wave, the transmission distance of the ultrasonic wave can be calculated accurately. And then it can reflect the situation of liquid level.
The introduction of Medical Ultrasound Probe principle and Its Piezoelectric Components
2019 / 04 / 23
The imaging system of medical ultrasound probe mainly relies on the ultrasonic transducer as the sensing element, which enables the ultrasonic probe to realize sector scanning under the drive of micro-motor, and obtains the histological characteristics of the target site through the echo signal in the form of ultrasonic echo, thus achieving the purpose of clinical diagnosis and treatment. The acquisition of ultrasonic echo depends on the inverse voltage effect and positive voltage effect of piezoelectric crystal of ultrasonic transducer. Its main structure includes control, transmitting and receiving, signal processing circuit, transducer, image processor and output. Of course, these are inseparable from the control of power supply. Positive piezoelectric effect refers to the change of shape of piezoelectric crystals along a certain direction under the action of external forces, which leads to polarization phenomenon inside them. The most direct manifestation is that there are positive and negative charges on the surface of piezoelectric crystals, but once the external forces are removed, the crystal charges will disappear. On the contrary, the inverse voltage effect is to add electric field to the polarization direction of the crystal. Under the action of external electric force, the shape of the crystal will change, but when the electric field is removed, the crystal will return to its original shape. Piezoelectric element is the core component of the transducer of the ultrasonic probe. It is made of piezoelectric material. In the endoscope imaging system, the transformation of acoustic wave and electric signal is realized by the positive voltage effect and the inverse voltage
Performance of Piezoelectric cylinder FAQ
2019 / 03 / 27
There is new question from Customer who complaint performance of piezoelectric cylinder, as the tubes size influence the process of piezoelectric elements deformation, that is no appropriate to test piezoelectric tube in same way. Before testing a tube, please calculate: h / R0 (R0=average radius) = X when X <2, please test the performance K31 . 2. when 5>X>2, please test the bandwidth ΔF(fp-fs) Refer to Chinese Industrial standard CB1194-88, Measurement and Calculation Method of Performance Parameters of Underwater Acoustic Practical Piezoelectric Ceramic Components.
Technical background of Yuhai Piezoelectric Ceramic Elements
2019 / 03 / 26
In 1986, participated in the formulation of the CB1125~1128-86 ministerial standard for general technical conditions of piezoelectric ceramic materials for underwater acoustics. In 1988, participated in the formulation of the "Measurement and Calculation Method of Performance Parameters of Underwater Acoustic Practical Piezoelectric Ceramic Components" CB1194-88 standard. In 1993, participated the formulation of the CB1218-93 ministerial standard of commonly used piezoelectric ceramic components for underwater acoustics. In
Piezoelectric ceramics application: Piezoelectric Transducer and its effect
2019 / 03 / 22
What are Piezoelectric Transducers? What is Piezoelectric Effect? Piezoelectric Crystals What is Piezoelectric Effect? There are certain materials that generate electric potential or voltage when mechanical strain is applied to them or conversely when the voltage is applied to them, they tend to change the dimensions along certain plane. This effect is called as the piezoelectric effect. This effect was discovered in the year 1880 by Pierre and Jacques Curie. Some of the materials that exhibit piezoelectric effect are quartz, Rochelle salt, polarized barium titanate, ammonium dihydrogen, ordinary sugar etc. Piezoelectric Transducers The piezoelectric transducers work on the principle of piezoelectric effect. When mechanical stress or forces are applied to some materials along certain planes, they produce electric voltage. This electric voltage can be measured easily by the voltage measuring instruments, which can be used to measure the stress or force. The physical quantities like stress and force cannot be measured directly. In such cases the material exhibiting piezoelectric transducers can be used. The stress or the force that has to be measured is applied along certain planes to these materials. The voltage output obtained from these materials due to piezoelectric effect is proportional to the applied stress or force. The output voltage can be calibrated against the applied stress or the force so that the measured value of the output voltage directly gives the value of the applied stress or force. In fact the scale can be marked directly in terms of stress
2019 / 03 / 19
Our company is a high-tech enterprise specializing in research and development and production of piezoelectric ceramics. The company has a united and self-confident production and sales team, a research and development team of excellence, and has good cooperative research and development relationship with Jinan University, Shaanxi Normal University, Academy of Acoustics of Chinese Academy of Sciences and many domestic research institutes. They choose our products to do professional research when conducting research on piezoelectric ceramics, ultrasonic sensors, transducers and other professional topics. Relying on strict production process and strict quality control, our piezoelectric ceramic components have excellent performance and consistency of 99.9%.
2019 / 03 / 18
Equivalent Ceramic Materials Material Cross Reference PZT Material PZT-43 PZT-51 PZT-5H PZT-82 Supplier Navy Type I Navy Type II Navy Type VI Navy Type III Morgan Matroc PZT-4
2019 / 03 / 02
Technological Competitiveness Yuhai company is a high-tech enterprise specializing in research and development and production of piezoelectric ceramics. The company has a united and self-confident production and sales support team, a research and development team of excellence, and has good cooperative research and development relationship with Jinan University, Shaanxi Normal University, Academy of Acoustics of Chinese Academy of Sciences and many domestic research institutes. They choose our products to do professional research when conducting research on piezoelectric ceramics, ultrasonic sensors, transducers and other professional topics. Relying on strict production process and strict quality control, our piezoelectric ceramic components have excellent performance and consistency of 99.9%.
Declaration about REACH regulations
2019 / 02 / 26
Declaration According to REACH Regulation (version on Oct. 18, 2018), Piezoelectric ceramic elements was exempted in REACH Regulations ANNEX XVII, 63.8.(k)(iv) as following: 63.8. As an exemption from Article 7, the following products are not subject to control: (k)(iv) Directive 2011/65/EU EU RoHS2.0. Zibo Yuhai company`s products are therefore exempted by REACH regulations. Zibo Yuhai Electronic Ceramic Co., Ltd. Sept. 14, 2018
2019 / 02 / 23
ROHS Declaration Hereby, Zibo Yuhai Electronic Ceramic Co., Ltd. declares that its standard products PZT piezoelectric ceramic was listed in the exemption list of 2011/65/EU. Their main constituent that conform includes: Pb, Zr and Ti. According to following Annex Ⅲ(7c.1) of the current directive 2011/65/EU, PZT is exempted from the substance prohibition. Annex Ⅲ 7(c)-I Electrical and electronic components containing lead in a glass or ceramic other than dielectric ceramic in capacitors, e.g. piezoelectronic devices, or in glass or ceramic matrix compound In addition to PZT piezoelectric ceramic, Zibo Yuhai Electronic Ceramic Co., Ltd. produces piezoelectric transducers made of the material PZT. These transducers are compliant with the directive by virtue of the exception granted to piezoelectronic devices in Annex Ⅲ and AnnexⅣ. The specific list of actuator products that conform includes: HIFU beauty sensor Force sensor Microphone Transponder Ultrasonic resonator Zibo Yuhai company`s products are therefore ROHS compliant. Zibo Yuhai Electronic Ceramic Co., Ltd.
Yuhai piezo elements was used in the scientists` piezoelectric study paper
2019 / 02 / 14
Enhanced pyroelectric and piezoelectric properties of PZT with aligned porosity for energy harvesting applications Yan Zhang,a Mengying Xie,a James Roscow,a Yinxiang Bao,b Kechao Zhou,b Dou Zhang
Chinese New Year Holiday Notice
2019 / 02 / 02
Holiday Notice Chinese New Year vacation is between Feb. 4 to Feb. 10, 2019, the production will reopen on Feb. 11. Your offer will be replied as early as we can, we are sorry for the inconvenience caused, and thank you for your patience.
2019 / 02 / 01
We are proud that Yuhai company passed GE Oil&Gas SRI Audit, and will be supplier of GE Oil&Gas.
The production flow charge of Piezo Ceramic elements
2019 / 01 / 29
The production flow charge of Piezo Ceramic elements The flow chart of the process is as follows: batching - mixed grinding - pre-firing - secondary grinding - granulation - forming - removing - sintering - Ceramic - shape processing - electrode - high voltage polarization - aging test. 1. Ingredients: Pre-treatment, impurities removal and moisture removal, and then weigh various raw materials according to the proportion of the formula, pay attention to a small amount of additives to be placed in the middle of the bulk. 2. Mixed grinding: The purpose is to grind all kinds of raw materials evenly and prepare conditions for complete solid-state reaction of pre-burning. Dry grinding or wet grinding are generally adopted. Dry grinding can be used in small batches, and stirring ball milling or airflow grinding can be used in large batches with high efficiency. 3. Pre-firing: The aim is to synthesize piezoelectric ceramics by solid-state reaction of raw materials at high temperature. This process is very important. It will directly affect the sintering conditions and the performance of the final product. Fourth, secondary fine grinding: The purpose is to fine the pre-fired piezoelectric ceramic powder by vibration and mixing, laying a good foundation for uniform performance of the ceramics. 5. Granulation: The purpose is to form high-density particles with good fluidity. The method can be carried out manually, but the efficiency is low. The efficient method is spray granulation. Ad
Main Projects ----Yuhai piezo elements
2019 / 01 / 17
Asia-1 Launch Vehicle Launched Successfully, picture from Newpapers Ø In 1982, Yuhai's Piezo ceramic element were used in launch test of launch vehicles [Changzheng-2" in China Ø In 1982, Piezo ceramic elements was used in launch test of China's launch vehicles. Ø In 1983, Yuhai piezo components were used in 915 Project, from the 707 Institute of China Shipbuilding Industry Corporation (CSIC). Ø In 1990, Yuhai piezo material was chosen in defense project of the National Defense Science and Technology Commission, ---piezoelectric elements for gyroscope used in [Asia I"Launch vehicles. Ø In 2006, Yuhai company cooperated with Wuhan University of Science and Technology to declare and undertake the development of high-power piezoelectric ceramics for receiving and sending (JPPT-115-2-1116), which is a military product supporting project of the National Defense Science and Technology Commission. Ø piezo tubes used for NDT
PZT material Patent--- Piezoelectric Material with High Curie Temperature and Its fabrication Method
2019 / 01 / 17
The piezoelectric ceramic have piezoelectric properties only in a certain temperature range. It has a critical temperature Tc. When the temperature is higher than Tc, the structure of piezoelectric material changes from ferroelectric phase to paraelectric phase, and the spontaneous polarization disappears. This critical temperature Tc is called Curie temperature of piezo ceramic. Therefore, Curie temperature of piezoelectric ceramic plays an important role in the application of piezoceramic elements. If it is used in high temperature environment, higher Curie temperature of piezoceramic components must be required. Therefore, with the expansion of the use of piezoelectric ceramic, the high temperature environment will be more and more, and the Curie temperature of piezo crystal will have higher requirements. The object of the invention is to provide a PZT piezoelectric ceramic material with high Curie temperature and a preparation method, which has high piezoelectric performance, higher Curie temperature than conventional material, simple preparation method, easy operation, pollution-free and low cost. China Patent ZL 2013 1 0300467.3
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.