Experiments were designed to investigate the inlfuence of controlling sintering mechanism on electrical properties of multilayer PTCR chip. During the preparation process, heating rate, sintering temperature, high-temperature holding time and cooling method were respectively regulated to prepare multilayer PTCR chip with good performance. After the process of organic casting, the casting PTCR green iflms were sintered at 1 260-1 280℃ for 0.5 h at reduction atmosphere, which was heated at the rate of 400℃/h. Then selecting 300℃/h as the cooling rate, the ceramics were oxidated at 850℃ for 1 h. The prepared multilayer PTCR chips exhibited room temperature resistivity of below 100 Ω·cm, and resistance rising rate more than 104 unit through the Curie temperature.
参考文献
| [1] | ZHOU Dongxiang,CHEN Yong,LIU Huan,DENG Chuanyi,GONG Shuping,ZHANG Daoli.Air-fired Ni for Ohmic Electrode of PTCR[J].武汉理工大学学报（材料科学版）英,2006(02):44-46. |
| [2] | Huang ZZ;Adikary SU .Preparation and Properties of PTCR Ceramic with Low Resistivity Sintered at Low Temperature[J].Journal of Materials Science,2002,13(04):221-224. |
| [3] | Chen Y;Gong SP;Fu QY et al.Preparation and Study on Performance of Submicron Nickel Powder for Multilayer Chip Positive Temperature Coififence Resistance[J].Chin Phys B,2010,19:117301-117305. |
| [4] | Chen Y;Gong SP;Zhang B et al.The Preparation of Fine-grained Positive Temperature Coefifcient Resistance with Superior Electrical properties[J].Micro Engi,2013,103:106-110. |
| [5] | Blanco L;Rand MC;Riley FL .Polymeric Stabilization of Aqueous of Barium Bitanate. Part I:Effect of pH[J].Journal of the European Ceramic Society,2000,20:1579-1581. |
| [6] | Tashiro S;Osonoi A;Igarashi H .Reduction Reoxidation Firing of(Ba,Ca,Sr,Pb)TiO3 Semicinducting Ceramics with Iridium foil Internal Electrodes[J].J Cera Soc Japan,1999,107:15-19. |
| [7] | Zhou ZG;Wang LC;Wu Z et al.A Smart Multilayer PTC Thermistor[J].Chi J Elec,1993,2:19-22. |
| [8] | Huang ZZ;Adikary SU .Preparation and Properties of PTCR Ceramic with Low Resistivity Sintered at Low Temperature[J].Journal of Materials Science,2002,13:605-608. |
| [9] | Soo HH;Lee JK;Hong KS et al.Incorporation Phe Nonena of Donor Dopant in BaTiO3 Systems[J].Solid State Ionicis,1998,108:81-85. |
| [10] | Gong SP;Sang PG;Zhou DX et al.Research on the Manufacture of Laminated BaTiO3-based Thermistor by Roll Forming[J].MATERIALS SCIENCE & ENGINEERING B,2003,99:425-427. |
| [11] | Wada N;Hiramatsu T;Tamura T et al.Investigation of Grain Boun-daries Influence on Dielectric Properties in Fine-grained BaTiO3 Ceramics without the Core-shell Structure[J].Cera Inter,2008,34:933-937. |
| [12] | K?ferstein R;J?ger L;Zenkner M et al.Shrinkage Mechanism and Phase Evolution of Fine-grain BaTiO3 Powder Compacts Containing 10mol% BaGeO3 Prepared Via a Precursor Route[J].Mater Chem & Phy,2008,112:531-535. |
| [13] | Lee C;Yoo H .Ba/Ti ratio Effect on Oxygen Re-equilibration Kinetics of Donor-doped BaTiO3[J].Solid State Ionicis,2008,179:338-442. |
| [14] | Lee YC;Lu WH;Shieu FS .Investigation of Thin Film End-termination on Multilayer Ceramic Capacitors with Base-metal-electrode[J].Cera Inter,2009,35:869-874. |
| [15] | Brutchey RL;Cheng GS;Gu Q;Morse DE .Positive temperature coefficient of resistivity in donor-doped BaTiO3 ceramics derived from nanocrystals synthesized at low temperature[J].Advanced Materials,2008(5):1029-1033. |
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