The Sintering and Electrical Properties of La0.5Sr0.5Co0.96Ni0.04O3-δ Ceramics with B2O3- CuO Addition

2021 ◽  
Vol 1027 ◽  
pp. 3-9
Author(s):  
Yong Cheng Lu ◽  
Yuan Xun Li ◽  
Rui Peng ◽  
Da Ming Chen ◽  
Qing Hui Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Bulk Density ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
Linear Shrinkage ◽  
Sintering Process ◽  
Sintering Aid ◽  
Shrinkage Curve ◽  
Reaction Method ◽  
Absolute Value

The performance of adding 0–3 wt% B2O3-CuO as a sintering aid to lower the sintering temperature of La0.5Sr0.5Co0.96Ni0.04O3-δ (LSCN) was investigated through solid-state reaction method. Results of linear shrinkage curve, bulk density, and microstructure indicated that BCu addition could promote the sintering process and enhance the densification of LSCN ceramics. With the increase of BCu content, low absolute value of TCR could be achieved, while the conductivity was deteriorated obviously. For LSCN ceramics sintered at 950 °C, the bulk density, conductivity, and TCR were worse than those sintered at higher temperatures. Consequently, the BCu-doped LSCN ceramics might not suitable for the application in the field of LTCC.

Preparation and Microwave Dielectric Properties of Ca(Sm0.5Nb0.5)O3 Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1198-1202
Author(s):  
Jia Mao Li ◽  
Tai Qiu
Keyword(s):  
Dielectric Properties ◽  
Solid State ◽  
Cooling Rate ◽  
Sintering Temperature ◽  
Microwave Dielectric Properties ◽  
Solid State Reaction Method ◽  
Sintering Process ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Microwave Dielectric

Microstructures and microwave dielectric properties of Ca(Sm0.5Nb0.5)O3 ceramics, prepared by a conventional solid-state reaction method, were systematically investigated by varying calcining temperature, sintering temperature and cooling rate. The XRD result showed that a single Ca(Sm0.5Nb0.5)O3 phase could be synthesized at a calcining temperature of 1200 °C. Optimized combination of microwave dielectric properties of εr = 22.36, Q×f = 18030 GHz and τf = -31.2 ppm/°C was obtained for furnace-cooled Ca(Sm0.5Nb0.5)O3 ceramics sintered at 1550 °C for 4 h. However, some microcracks were found from the microstructures of the furnace-cooled specimens. Further, the Q×f value could be increased by controlling the cooling rate during the sintering process due to the disappearance of microcracks in the final material. With a cooling rate of 2 °C/min, Ca(Sm0.5Nb0.5)O3ceramics exhibited an enhanced Q×f value of 37130 GHz.

Effects of Mg2SiO4 Addition on the Microstructure and Dielectric Properties of MgTiO3-CaTiO3 Ceramics

2013 ◽  
Vol 675 ◽  
pp. 200-204
Author(s):  
Fei Shi ◽  
Peng Cheng Du ◽  
Jing Xiao Liu ◽  
Ji Wei Wu ◽  
De Qing Chen ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Solid State ◽  
Dielectric Loss ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
Composite Ceramics ◽  
Reaction Method ◽  
Dielectric Ceramics

The Mg2SiO4-MgTiO3-CaTiO3 composite dielectric ceramics with different Mg2SiO4 addition amounts were prepared by solid state reaction method. The effects of Mg2SiO4 addition amounts on the microstructure and dielectric properties as well as sintering temperature of xMg2SiO4-(0.95-x)MgTiO3-0.05CaTiO3 (abbreviated as xMSTC, 0.25≦x≦0.75) composite ceramics were investigated. The results indicated that the sintering temperature of MgTiO3-CaTiO3 based ceramics with Mg2SiO4 addition could be lowered effectively to 1320~1340°C, and the dielectric constant decreased and dielectric loss increased gradually with the increase of Mg2SiO4 content. The 0.45MSTC ceramics containing 45 wt% Mg2SiO4 and sintered at 1340°C showed desirable dielectric properties with dielectric constant εr=13.3，dielectric loss tanδ=4.5×10-4 and temperature coefficient of relative permittivity τε =10 ppm/°C.

Influence of Currents and Electric Fields in YNMO Ceramics

2017 ◽  
Vol 866 ◽  
pp. 256-258
Author(s):  
Naphat Albutt ◽  
Suejit Pechprasarn ◽  
Thanapong Sareein
Keyword(s):  
Dielectric Properties ◽  
Solid State ◽  
Electrical Properties ◽  
Electric Fields ◽  
Sintering Temperature ◽  
Ceramic Materials ◽  
Solid State Reaction Method ◽  
Electronic Components ◽  
Reaction Method ◽  
A Current

Development of ceramic materials is critical for new and improved electronic applications. Herein, the J-E response of Y2NiMnO6 (YNMO) ceramics composited by a solid state reaction method was investigated. Sintering temperature and time were found to have significant influence on the ceramics electrical properties. In particular, higher temperatures and longer sintering times resulted in more favourable dielectric properties of the YNMO ceramics. A current of 40 mA/cm2 at 20,000 mV/cm was obtained by sintering at 1300 °C for 12 hours, whereas a current of 9 mA/cm2 at 4000 mV/cm can be achieved by sintering at 1400 °C for 24 hours. These results will be useful for identifying applications for YNMO ceramics. The electrical properties of the YNMO ceramics can be tuned for different electronic components such as dry batteries and capacitors.

Effect of Ti-Doped on Y134 Superconductor

2016 ◽  
Vol 851 ◽  
pp. 42-45
Author(s):  
Rattanasuda Supadanaison ◽  
Theerathawan Panklang ◽  
Chalit Wanichayanan ◽  
Warayut Srithongsuk ◽  
Jaturong Junrear ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
Peritectic Temperature ◽  
Reaction Method ◽  
Melting Area ◽  
Ti Doping

We investigated some properties of Y134 superconductor doped Ti superconductor. The series of samples of Y134 doped Titanium (YBa3Cu4TixO9-δ) which x=0, 0.05, 0.10, 0.15, 0.20, 0.25 were prepared by solid state reaction method with calcinations and sintering temperature at 980 °C. The porosity was reduced and the melting area were found for all Ti-doped samples. There was a little effect of Ti-doped on Tc onset but the lower of Tc offset were found that agree with the melting found on surface of sample with Ti-doped. The peritectic temperature of Y134 powder, and Y134 + 0.10Ti were on the same range about with more peak area of pure Y134 than Y134 with Ti-doping.

Effect of the Doping Ni and Overdosing Lithium for Synthesis LiMn2O4 Cathode Material by the Solid State Reaction Method

2013 ◽  
Vol 457-458 ◽  
pp. 93-97
Author(s):  
Yen Chun Liu ◽  
Ming Cheng Liu ◽  
Robert Lian Huey Liu ◽  
Mao Chieh Chi
Keyword(s):  
Solid State ◽  
Cathode Material ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Lithium Battery ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
Attrition Rates ◽  
Reaction Method ◽  
Initial Capacity

The study with Li2CO3 and Mn3O4 through the solid state reaction makes cathode material for lithium battery spinel - LiMn2O4. According to past literature, under the solid-state reaction. The experiment carries out sintering at temperature of 850°C.. Cathode materials under these sintering temperatures are made to fabricate battery. For Ni doped LiMn2O4, the capacitance decreasing speed is slow and stable; after 15 times charging-discharging cycles, the attrition rates were 3.05 % or less. The result of experiment demonstrates that the best sintering temperature is at 850°C. Under the condition of 850°C, various contents for extra amount of lithium (1.02 mole-1.1 mole) are fabricated and range of working voltage is released. It is found a further increase of initial capacity to 140.51 mAh/g. LiMn2O4 further extends circulation and usage.

High Frequency Magnetic Properties of A Composite Material Prepared from Z-Type Hexaferrite and Bi2O3

2013 ◽  
Vol 833 ◽  
pp. 99-102
Author(s):  
Zhen Hua Cao ◽  
Man Gui Han ◽  
Meng Ran Guan ◽  
Zhen Jiang Song ◽  
Long Jiang Deng
Keyword(s):  
Magnetic Properties ◽  
Composite Material ◽  
Solid State ◽  
High Frequency ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
Q Factor ◽  
Reaction Method ◽  
High Q ◽  
Microstructure And Magnetic Properties

The composite materials are composed by Z-type hexaferrite and Bi2O3 by solid-state reaction method. Crystalline phase, microstructure and magnetic properties were measured by XRD, SEM, and VNA. The results showed that the sintering temperature and the content of Bi2O3 can effectively affected both uniformity and densification. What's more, Z-type hexaferrite mixed with proper content of Bi2O3 and sintered at a low temperature presented a high Q-factor in a high frequency.

Synthesis and luminescence of Li2.06Nb0.18Ti0.76O3: Eu3+ Ceramics

2020 ◽  
Vol 13 (05) ◽  
pp. 2051030
Author(s):  
Xi Chen ◽  
Qun Zeng ◽  
Liu Lei ◽  
Chun-Feng Yao ◽  
Chao-Chao Guo ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Fluorescence Spectra ◽  
Sintering Temperature ◽  
Emission Spectra ◽  
Solid State Reaction Method ◽  
Red Emission ◽  
Reaction Method ◽  
Pl Spectra ◽  
Orange Emission

Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: Eu[Formula: see text] luminescent ceramics were prepared by the solid-state reaction method. By means of XRD, SEM, density testing, and fluorescence spectra data, the luminescent ceramics were characterized as functions of Eu[Formula: see text] concentration and sintering temperature. With the increase of sintering temperature and Eu[Formula: see text] concentration, the peak intensities of the PLE spectra monitored at 612[Formula: see text]nm and PL spectra excited at 396[Formula: see text]nm were dramatically improved. Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: 3[Formula: see text]wt.%Eu[Formula: see text] ceramics sintered at 1120∘C showed the highest PL intensity. The emission spectra showed orange emission at 592[Formula: see text]nm and red emission at 612[Formula: see text]nm, corresponding to the transition of 5D[Formula: see text]F1 and 5D[Formula: see text]F2 of Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: Eu[Formula: see text] ceramics.

Photoluminescence Properties of Eu3+-activated Silicate Phosphors

2017 ◽  
Vol 36 (6) ◽  
pp. 635-640
Author(s):  
Esra Öztürk
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction Method ◽  
Sintering Process ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Reaction Method ◽  
X Ray ◽  
Host Lattices ◽  
Silicate Phosphors

AbstractThe silicate-type and Eu3+-activated Sr3SiO5 and Mg3SiO5 were prepared through the high temperature solid state reaction method under an open atmosphere. DTA/TG analysis was conducted to obtain information about the thermal behaviors of the mixed reactants. Using the DTA/TG results, the sintering process was achieved and the phase properties were characterized by X-ray diffraction (XRD). The effects of the same activator (Eu3+) and co-dopant (Dy3+) on the photoluminescence (PL) properties of the host lattices were investigated by using a photoluminescence spectrometer.

Sign in / Sign up

Export Citation Format

Share Document