Dissertation > Excellent graduate degree dissertation topics show

Preparation of research thermistor temperature sensor

Author: XiangYan
Tutor: LiWei；ZhangJinTai
School: University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: NTC thermistor fabrication technique sintering seal structure
CLC: TP212.11
Type: Master's thesis
Year: 2011
Downloads: 107
Quote: 1
Read: Download Dissertation

Abstract


NTC thermistor is a common thermal sensing device of the temperature sensors, and every technique during production process has many significant effects on the consistency and stability of the product. With the improvement of temperature sensors, the thermistor with better consistency of electrical parameter and higher environmental stability is highly needed. Thus it is very important and significant to investigate and optimize the key techniques.In this paper, the NTC thermistors of the Mn-Co-Ni-Cu series are taken as the main research objects and their key techniques are studied intensively. The main contents of our research are as follows:1. Different fabrication techniques of the powder/slurry and the molding techniques of the green body are investigated. The stability and the adaptability of the powder /slurry in different systems are characterized, and the properties of the obtained green body are also commented. Finally, the relatively better fabrication techniques of the green body are determined as follows: dispensing forming pattern was used in slurry D and overlapping forming pattern was used in slurry E.2. The forming properties of the NTC thermistors are studied under microwave conditions. And by means of the electrical measurement and the microstructure characterization of the sintered products, the quality of the forming status of the ceramics under different sintering conditions is evaluated and the optimal sintering conditions are finally determined: the optimal sintering condition of sample No. 0805 was at 900℃for 11 minutes and the heating rate was 80℃/min, and the optimal sintering condition of sample No. 1206 was at 850℃for 9 minutes and the heating rate was 100℃/min.3. The stability and the environmental adaptability of the NTC thermistors with same composition and different seal structure are discussed, and the best seal structure for the NTC thermistors is applied to improve the stability of the NTC thermistors in an industrial situation.

Related Dissertations

  1. Preparation and Tribological Properties of TZ3Y20A-SrSO4 Ceramic Matrix Composites,TB332
  2. Microwave drive power and microwave sintering furnace study,TN015
  3. Large high-pressure vessel sealing system biconical Numerical Simulation,TQ053.2
  4. Preparation of AlON Power and Hot-pressed Sintering Behavior of AlON Ceramic Material,TF124.5
  5. Experimental and Analytical Study on Sinter Mixture’s Drying Process,TF046.4
  6. Preparation of Nonstoichiometric CrN_x by Ma and Its Sintering Characteristric,TF124.5
  7. Study on Microstructure and Properties of Ti-43Al-9V Alloy by Spark Plasma Sintering,TF124.5
  8. Microwave sintering properties of Fe-4Ni-2Cu-0.6Mo-0.6C alloy steel,TF124.5
  9. Microwave sintered W-Ni-Fe high density alloy,TF124.5
  10. Add trace amounts of copper nanoparticles on the microstructure and properties of the iron-based powder sintered parts,TF124.5
  11. TiAl Alloys SPS sintering of Microstructure and High Temperature Oxidation,TF124.5
  12. Research on Nylon 6/Copper Composite Powder Manufacture Plastic Molds by Selective Laser Sintering,TF124.5
  13. Research on New Comprehensive Utilization Method for Red Mud from Bayer Process,X758
  14. Experiment Study on Semi-dry Desulfurization of Sintering Flue Gas,X701.3
  15. Study on the Characteristics of Calcium-Based Cyclic Carbonation-Calcination Reactions for CO2 Separation,X13
  16. Optimization Method of mine with the problem of uncertainty,F407.1
  17. Preparation of Zirconia Composite Ultrafiltration Membranes and Application in Seawater Desalination Pretreatment,P747
  18. MIC to do with limiting current density diffusion layer of the oxygen sensor,TP212.2
  19. The Temperature Control System of Vacuum Sintering Furnace Based on Ant Colony Algorithm and OPC Technology,TP273
  20. Effects of Sintering Temperature and Calefactive Velocity on Properties of Diatomite-based Dental Machinable Ceramic,R783.1
  21. Research on Preparation of Miniature Ceramic Heater,TB657.5

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation components,parts > Transmitter ( converter),the sensor > Physical sensors > Temperature sensor
© 2012 www.DissertationTopic.Net  Mobile