黑光烧结基于 BaZrO3 的质子导体

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-10-17 DOI:10.1016/j.scriptamat.2024.116414

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引用次数: 0

摘要

掺杂受体的 BaZrO3 是一种陶瓷质子导体，由于其质子传导性和化学稳定性，被广泛研究用于固体氧化物燃料电池。这种材料的一个主要缺点是烧结困难，因为它需要较高的烧结温度和较长的加热时间（1600 °C，24 小时）。黑光灯烧结是一种新兴的烧结技术，它利用高功率蓝光或紫外线光源快速加热陶瓷，从而缩短了烧结时间，降低了能源需求，从而缓解了这一难题。在这项工作中，使用高功率蓝色激光在四分钟内对 BaZr0.8Y0.2O3-δ (BZY20) 和 BaZr0.8Y0.1Sc0.1O3-δ (BZY10Sc10) 进行了黑光烧结。尽管得到的样品具有从大到小的晶粒梯度和结构紊乱的晶界，但其质子传导性与传统烧结样品相当。因此，黑光烧结是一种很有前途的技术，有可能更快地烧结出 BaZrO3，同时节约能源。

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Blacklight sintering of BaZrO3-based proton conductors

Acceptor-doped BaZrO₃, a ceramic proton conductor, is well researched for use in solid oxide fuel cells due to its proton conductivity and chemical stability. A major drawback of the material is the difficulty of sintering as it requires high sintering temperatures and long heating times (> 1600 °C, 24 h). An emerging sintering technology to mitigate this challenge is blacklight sintering, which uses a high-powered blue or UV light source to heat ceramics extremely fast leading to short sintering times and reduced energy demand. In this work, BaZr_0.8Y_0.2O_3-δ (BZY20) and BaZr_0.8Y_0.1Sc_0.1O_3-δ (BZY10Sc10) were blacklight-sintered with a high-power blue laser in under four minutes. Even though the resulting samples have a gradient from large to small grains and structurally disordered grain boundaries, the proton conductivity is comparable to conventionally sintered samples. Hence, blacklight sintering is a promising technology with the potential to sinter BaZrO₃ much faster, while saving energy.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.