An Overview of the Aerosol Deposition Method: Process Fundamentals and New Trends in Materials Applications
An Overview of the Aerosol Deposition Method: Process Fundamentals and New Trends in Materials Applications
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DOI：
10.4416/jcst2015-00018
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发表时间：
2015-09-01
影响因子：
0.5
通讯作者：
Moos, R.
中科院分区：
文献类型：
--
作者：
Hanft, D.;Exner, J.;Moos, R.
陶瓷材料通常必须在高温下烧结，通常高于1000摄氏度。这排除了用致密和坚固的薄或厚陶瓷膜涂覆低熔点基底材料，例如金属、玻璃和聚合物。此外，陶瓷组分的分解或不受控制的挥发可在升高的温度下发生。作为替代方案，气溶胶沉积（AD）方法是一种喷涂工艺，其在室温下直接从初始散装粉末在几乎任何基底材料上生产致密的纳米晶陶瓷膜，而无需烧结。这种巨大的潜力吸引了越来越多的研究小组的注意，反映了迅速增长的出版物数量。它描述了典型的工艺设备和参数以及起始粉末和所得膜的特性。特别注意的是Al 2 O3，TiO 2，BaTiO 3和Pb（Zr，Ti）O-3，因为它们代表了AD中最常用的陶瓷。还描述了许多其他材料的气溶胶沉积，以证明这种新技术的多功能性，其实现材料和微结构的新型组合的能力，以及其对未来应用的适用性。还讨论了气溶胶沉积行为的理解和实验和建模方法来解释的主要气溶胶沉积机制（S）的当前状态。
Ceramic materials typically have to be sintered at high temperatures, often above 1000 degrees C. This precludes the coating of lower-melting substrate materials, such as metals, glasses and polymers, with dense and robust thin or thick ceramic films. In addition, decomposition or uncontrolled volatilization of the ceramic components can occur at elevated temperatures. As an alternative, the Aerosol Deposition (AD) method is a spray coating process to produce dense and nanocrystalline ceramic films at room temperature directly from an initial bulk powder on almost any substrate material with no need for sintering. This great potential attracts the attention of a growing number of research groups as reflected by a rapidly growing number of publications.The objective of this review is to give a holistic overview of the AD science and technology. It describes typical process equipment and parameters and starting powder and resulting film characteristics. Special attention is given to Al2O3, TiO2, BaTiO3 and Pb(Zr,Ti)O-3, as they represent a few of the most frequently used ceramics in AD. Aerosol Deposition of many other materials are also described to demonstrate the versatility of this new technology, its ability to realize novel combinations of materials and microstructures, and its suitability for future applications. Also discussed is the current state of understanding of aerosol deposition behavior and the experimental and modeling approaches used to explain the primary aerosol deposition mechanism(s).