mixing and pressing
Mixing
Barium titanate is a white powder that can be mix by barium carbonate and titanium dioxide. The mixture of Barium titanate can be pressed to make the piezoelectric discs.
How to mix barium carbonate with titanium dioxide ?
First, we need to use the chemical reaction formula to calculate the molar ratio of the mixture
Baco3 + Tio2 -> Batio3 + Co2
Ba:137.33
Carbon:12 Oxygen:16
Ti:47.9
Total molecular mass barium carbonate = 137.33+12+48=197.33
Total molecular mass titanium dioxide=47.9+32=79.7
The mass fraction of barium carbonate = 197.33/ (197.33+79.7) = 0.7117
The mass fraction of titanium dioxide = 79.7/ (197.33+79.7) = 0.2882
For 60g, we need 0.7117 x 60 g= 42.7 g barium carbonate 0.2882 x 60g = 17.292 g titanium dioxide
Right now, we can weight those powders and put these powders into the pounder bowl and started to mix. We added some ethanol after grounded the powders, and kept pounding. We have pounded the mixture for 20-25 minutes until it looks a little pasty. After that, we transferred the mixture into a beaker and covered it with aluminum foil.
Pressing
We weight 20 grams of premade barium titanate powders and put these powders into
we determine the thickness by putting black layers and metal bar between two cylinders.
We recorded down the diameter-25.41mm for the pre-made barium titanate 26.04 mm for the mixture of barium titanate to calculate the shrinkage percent for the sintering data.
Mixing
Barium titanate is a white powder that can be mix by barium carbonate and titanium dioxide. The mixture of Barium titanate can be pressed to make the piezoelectric discs.
How to mix barium carbonate with titanium dioxide ?
Barium titanate is a white powder that can be mix by barium carbonate and titanium dioxide. The mixture of Barium titanate can be pressed to make the piezoelectric discs.
How to mix barium carbonate with titanium dioxide ?
First, we need to use the chemical reaction formula to calculate the molar ratio of the mixture
Baco3 + Tio2 -> Batio3 + Co2
Ba:137.33
Carbon:12 Oxygen:16
Ti:47.9
Total molecular mass barium carbonate = 137.33+12+48=197.33
Total molecular mass titanium dioxide=47.9+32=79.7
The mass fraction of barium carbonate = 197.33/ (197.33+79.7) = 0.7117
The mass fraction of titanium dioxide = 79.7/ (197.33+79.7) = 0.2882
For 60g, we need 0.7117 x 60 g= 42.7 g barium carbonate 0.2882 x 60g = 17.292 g titanium dioxide
Right now, we can weight those powders and put these powders into the pounder bowl and started to mix. We added some ethanol after grounded the powders, and kept pounding. We have pounded the mixture for 20-25 minutes until it looks a little pasty. After that, we transferred the mixture into a beaker and covered it with aluminum foil.
Pressing
We weight 20 grams of premade barium titanate powders and put these powders into
we determine the thickness by putting black layers and metal bar between two cylinders.
We recorded down the diameter-25.41mm for the pre-made barium titanate 26.04 mm for the mixture of barium titanate to calculate the shrinkage percent for the sintering data.
Mixing
Barium titanate is a white powder that can be mix by barium carbonate and titanium dioxide. The mixture of Barium titanate can be pressed to make the piezoelectric discs.
How to mix barium carbonate with titanium dioxide ?