‘Ultra’-low-temperature sintering of PZT: A synergy of nano-powder synthesis and addition of a sintering aid

Willemite ceramics (Zn2SiO4) possess excellent millimeter-wave dielectric properties, but it also has a high sintering temperature above 1300°C by traditional solid-state reaction and relatively large negative τf value. Zn2SiO4 nanoparticles synthesized by Sol–Gel method were used to improve the sintering and dielectric properties of the Zn2SiO4 ceramics. Using the nanoparticles, Zn2SiO4 ceramics can be sintered at a low temperature, 1150°C and exhibited improved microwave dielectric properties of εr =6.62, Q × f=24500 GHz, τf =-59ppm/°C. By adding TiO2 with high positive τf value (+450 ppm/°C) and CuO as sintering aid, near zero τf value and low sintering temperature can be achieved. With 11wt% of TiO2 and 5 wt% of CuO, an εr value of 9.3, a Q × f value of 12200GHz and a τf value of -11 ppm/°C were obtained at 1000°C, confirming the promising potential of the CuO-added TiO2-Zn2SiO4 ceramics as candidate materials for low–temperature cofired ceramic (LTCC) devices.

Download Full-text

Low-temperature sintering of Al2O3 ceramics doped with 4CuO-TiO2-2Nb2O5 composite oxide sintering aid

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2020.06.068 ◽

2020 ◽

Vol 40 (15) ◽

pp. 5504-5510 ◽

Cited By ~ 2

Author(s):

Yan Yang ◽

Mingsheng Ma ◽

Faqiang Zhang ◽

Feng Liu ◽

Guanyu Chen ◽

...

Keyword(s):

Low Temperature ◽

Low Temperature Sintering ◽

Composite Oxide ◽

Sintering Aid

Download Full-text

Low temperature sintering of high performance KNN-based lead-free piezoelectric ceramic using BCBM frit as sintering aid

Journal of Electroceramics ◽

10.1007/s10832-013-9828-6 ◽

2013 ◽

Vol 31 (1-2) ◽

pp. 42-47 ◽

Cited By ~ 4

Author(s):

Yue-Ming Li ◽

Zong-Yang Shen ◽

Zu-Gui Xiao ◽

Zhu-Mei Wang ◽

Wen-Qin Luo ◽

...

Keyword(s):

Low Temperature ◽

Piezoelectric Ceramic ◽

High Performance ◽

Lead Free ◽

Low Temperature Sintering ◽

Sintering Aid

Download Full-text

Low-temperature Sintering of Yttria-stabilized Zirconia Using Bismuth–Vanadium Oxide as a Sintering Aid at 800 °C

Chemistry Letters ◽

10.1246/cl.140712 ◽

2014 ◽

Vol 43 (12) ◽

pp. 1887-1889 ◽

Cited By ~ 3

Author(s):

Masahiro Nagao ◽

Kazuyo Kobayashi ◽

Takashi Hibino

Keyword(s):

Low Temperature ◽

Vanadium Oxide ◽

Yttria Stabilized Zirconia ◽

Low Temperature Sintering ◽

Stabilized Zirconia ◽

Sintering Aid

Download Full-text

Low-Temperature Sintering of ZnO–TiO2 Ceramics

Journal of Engineering Materials and Technology ◽

10.1115/1.4030412 ◽

2015 ◽

Vol 137 (3) ◽

Cited By ~ 4

Author(s):

Zhengwei Nie ◽

Yuyi Lin ◽

Feixue Wang

Keyword(s):

Low Temperature ◽

Vanadium Pentoxide ◽

Material Properties ◽

Sintering Temperature ◽

Theoretical Density ◽

Sintering Behavior ◽

Low Temperature Sintering ◽

Sintering Aid

Vanadium pentoxide (V2O5) was chosen as a sintering aid to lower the sintering temperature of the ZnO–TiO2 system. The effect of V2O5 on the sintering behavior and material properties of ZnO–TiO2 ceramics and cermets made of ZnO–TiO2 ceramics and copper (Cu) was investigated as a function of V2O5 percentage and sintering temperature. Densities and hardness of the specimens were improved with an increase of V2O5 up to 2 wt. %. The sintering temperature of the specimens can be reduced to below 1000 °C. The properties of ZnO–TiO2 ceramics and cermets made from ZnO–TiO2 ceramics and Cu with V2O5 are strongly dependent on the sintering temperature. The density of ZnO–TiO2 ceramics and cermets was increased up to 95%, 90% of theoretical density at 900–920 °C, 960–1000 °C, respectively, for 4 hrs.

Download Full-text