期刊
JOURNAL OF THERMAL SPRAY TECHNOLOGY
卷 32, 期 4, 页码 778-817出版社
SPRINGER
DOI: 10.1007/s11666-023-01587-1
关键词
aerospace; biomaterials; embedded sensors; energy conversion; environmental barrier coatings (EBCs); membranes; thermal barrier coatings (TBCs)
Thermal spray coatings are unique material systems that have driven the development of modern technologies. Their distinctive thermal and mechanical properties have maintained industrial interest. However, the adoption of thermal spray technology in new applications can be challenging, potentially increasing risk. Nevertheless, industries have benefited from implementing thermal spray coatings to improve manufacturing cost and component performance.
Thermal spray coatings are material systems with unique structures and properties that have enabled the growth and evolution of key modern technologies (i.e., gas turbines, structurally integrated components, etc.). The inherent nature of these sprayed coatings, such as their distinctive thermal and mechanical properties, has been a driving force for maintaining industrial interest. Despite these benefits and proven success in several fields, the adoption of thermal spray technology in new applications (i.e., clean energy conversion, semiconductor thermally sprayed materials, biomedical applications, etc.) at times, however, has been hindered. One possible cause could be the difficulty in concurrently maintaining coating design considerations while overcoming the complexities of the coatings and their fabrication. For instance, a coating designer must consider inherent property anisotropy, in-flight decomposition of molten material (i.e., loss of stoichiometry), and occasionally the formation of amorphous materials during deposition. It is surmisable for these challenges to increase the risk of adoption of thermal spray technology in new fields. Nevertheless, industries other than those already mentioned have benefited from taking on the risk of implementing thermal spray coatings in their infrastructure. Benefits can be quantified, for example, based on reduced manufacturing cost or enhanced component performance. In this overview paper, a historical presentation of the technological development of thermal spray coatings in several of these industries is presented. Additionally, emerging industries that have not yet attained this level of thermal spray maturation will also be discussed. Finally, where applicable, the utility and benefits of multilayer functional thermal spray coating designs will be demonstrated.
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