This review presents the history of materials in the A₂M₃O₁₂ and related ceramic families, including their unusual thermal expansion and the present understanding of its mechanism, and related factors such as hydroscopicity and the monoclinic to orthorhombic phase transition. Other properties, including thermomechanical, thermal and ionic conduction and optical properties, are presented in terms of current knowledge, challenges and opportunities for applications. One of the largest challenges is the production of monoliths, and various methods for consolidation and sintering are summarized. These ceramics have considerable promise when combined with other materials, and recent advances in such composites are presented. These matters are placed in the context of the potential applications of negative and near-zero thermal expansion ceramics, which still present challenges for future materials researchers.

这篇综述介绍了材料的历史 一种₂米₃ O ₁₂和相关的陶瓷家族，包括它们不寻常的热膨胀和目前对其机制的理解，以及相关因素，如吸湿性和单斜向正交相变。其他特性，包括热机械、热和离子传导和光学特性，根据当前的知识、挑战和应用机会进行介绍。最大的挑战之一是整料的生产，总结了各种固结和烧结方法。当与其他材料结合时，这些陶瓷具有相当大的前景，并且介绍了此类复合材料的最新进展。这些问题被置于负热膨胀和接近零热膨胀陶瓷的潜在应用的背景下，这仍然对未来的材料研究人员构成挑战。