CERAMICS OF BARIUM TITANATE Publication: Chemical analysis by Inductively Coupled Plasma Atomic Emission Spectrometry of semiconducting ceramics of barium titanate doped with various metal oxides Authors: Field: Ceramic Elements: Al, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Nb, Ni, P, Pb, Si, Sr, W, Zn, Zr
The sample was crushed and milled down to a grain size < 30 µm in a tungsten carbide mortar. Three decomposition methods were used.
Decomposition with HCl under pressure The powdered sample (0.2 g) was treated in a PTFE-lined pressure vessel with 5 ml of HCl. Total dissolution requires 14 h at 160 °C. The solution was diluted to 100 ml with distilled water.
Fusion with Na2CO3 The sample (0.2 g) was mixed with 2.0 g of Na2CO3 in a platinum crucible and fused by heating in a Mekker burner for 30 min. After cooling, it was introduced carefully in a 250-mL beaker containing 100 ml of 1+9 (v/V) HCl and gently heated until the fused sample was dissolved. The solution was completely transferred to a 200 ml volumetric flask and diluted to volume with 1 +9 (v/v) HCl.
Fusion with Li 2B4 O7 The sample (0.2 g) was mixed with 2.0 g of Li 2B4 O7 in a porcelain crucible, and then transferred to a graphite crucible. The mixture was fused in a muffle furnace at 1100 °C for 20 min. The melt was then carefully and quickly poured into a 400-mL beaker containing 100 ml of 1 + 24 (v/v) HNO3 . The contents were stirred with a teflon-covered magnetic bar, on top of a magnetic stirrer until the melt dissolved. The solution was diluted to 200 ml with 1 + 24 (v/v) HNO3.
钛酸钡陶瓷
应用：利用ICP 化学分析含有各种金属氧化物钛酸钡半导体陶瓷 作者：Juan C Farinas, Maria F. Barba 领域：陶瓷业 分析元素：Al, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Nb, Ni, P, Pb, Si, Sr, W, Zn, Zr
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