Cold Sintering: A Paradigm Shift for Processing and Integration of Ceramics
Cold Sintering: A Paradigm Shift for Processing and Integration of Ceramics
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DOI：
10.1002/anie.201605443
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发表时间：
2016-09-12
影响因子：
16.6
通讯作者：
Randall, Clive A.
中科院分区：
文献类型：
--
作者：
Guo, Jing;Guo, Hanzheng;Randall, Clive A.
本文介绍了一种陶瓷和陶瓷基复合材料的烧结技术，使用水作为瞬态溶剂，在室温至200 ℃之间的温度下实现致密化（即烧结）。为了强调烧结温度相对于传统热烧结的令人难以置信的降低，这种新方法被命名为冷烧结工艺（CSP）。基本上，CSP使用瞬态水性环境通过介导的溶解-沉淀过程来实现致密化。CSP的NaCl，碱金属碳酸盐和V2 O 5与低浓度的水进行了详细描述，但该过程是扩展和证明了各种化学（氧化物，碳酸盐，溴化物，氟化物，氯化物和磷酸盐），多晶体结构，和多材料的应用。此外，所选CSP样品的性能被证明是基本上等同于通过常规的热烧结制成的样品。
This paper describes a sintering technique for ceramics and ceramic-based composites, using water as a transient solvent to effect densification (i.e. sintering) at temperatures between room temperature and 200 degrees C. To emphasize the incredible reduction in sintering temperature relative to conventional thermal sintering this new approach is named the Cold Sintering Process (CSP). Basically CSP uses a transient aqueous environment to effect densification by a mediated dissolution-precipitation process. CSP of NaCl, alkali molybdates and V2O5 with small concentrations of water are described in detail, but the process is extended and demonstrated for a diverse range of chemistries (oxides, carbonates, bromides, fluorides, chlorides and phosphates), multiple crystal structures, and multimaterial applications. Furthermore, the properties of selected CSP samples are demonstrated to be essentially equivalent as samples made by conventional thermal sintering.