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首页> 外文期刊>Key Engineering Materials >Sintering Behavior of Pure and Nb-doped BaTiO_3 Powder Prepared by High-Gravity Reactive Precipitation
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Sintering Behavior of Pure and Nb-doped BaTiO_3 Powder Prepared by High-Gravity Reactive Precipitation

机译：高重力反应沉淀法制备纯Nb掺杂BaTiO_3粉的烧结行为

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摘要

Sintering behavior of pure and Nb-doped barium titanate powders prepared by high-gravity reactive precipitation (HGRP) process was investigated. A thermal dilatometer was employed to monitor the sintering shrinkage continuously during sintering. TEM and SEM were used to characterize the micro-structures of the samples. The experimental results confirmed that Nb-doped BaTiO_3 ceramics sintered at 1220℃ for 2 h reached a larger densification of 97.0% relative density compared with 94.6% of pure BaTiO_3 ceramics sintered at 1265℃ for 2 h, and Nb-doped BaTiO_3 ceramics had a smaller grain size (1.2μm) than that of pure BaTiO_3 ceramics (2μm).
机译：研究了通过高重力反应沉淀（HGRP）工艺制备的纯Nb掺杂钛酸钡粉末的烧结行为。使用热膨胀计来连续监测烧结期间的烧结收缩率。 TEM和SEM用于表征样品的微观结构。实验结果证实，与在1265℃烧结2 h的纯BaTiO_3陶瓷的94.6％相比，在1220℃烧结2 h的Nb掺杂的BaTiO_3陶瓷具有更大的致密性，相对密度为97.0％。比纯BaTiO_3陶瓷（2μm）小（1.2μm）。

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