{"id":15900,"date":"2026-08-03T01:06:30","date_gmt":"2026-08-03T06:06:30","guid":{"rendered":"https:\/\/www.thermofisher.com\/blog\/materials\/?p=15900"},"modified":"2026-08-03T01:06:32","modified_gmt":"2026-08-03T06:06:32","slug":"multilayer-coating-analysis-aerospace-materials-sem-eds-tof-sims","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/materials\/multilayer-coating-analysis-aerospace-materials-sem-eds-tof-sims\/","title":{"rendered":"Multilayer Coating Analysis on Aerospace Materials with SEM-EDS and ToF-SIMS"},"content":{"rendered":"<h3 style=\"font-size: 100%\"><strong>Key takeaways<br \/><\/strong><\/h3>\n<ul>\n<li>Aerospace materials use multilayer coating systems to protect against corrosion, wear, oxidation, and other environmental stresses.<\/li>\n<li>The performance of these multilayered aerospace coatings is governed by their composition, structure, and uniformity, which have been challenging to analyze with traditional methods.<\/li>\n<li>This blog explores how a combination of SEM-EDS and ToS-SIMS analysis supports the high resolution, precise characterization of aerospace material coatings, with a particular focus on multilayer systems that can consist of a complex mixture of organic and inorganic layers.<\/li>\n<li>This multi-modal characterization, which combines elemental analysis and imaging, can support the development, qualification, and certification of complex aerospace materials.<\/li>\n<\/ul>\n<h3><strong>\u00a0<\/strong><\/h3>\n<h2 style=\"font-size: 100%\"><strong>Controlling complex multilayer coating on aerospace materials<\/strong><\/h2>\n\n\n<p>In the aerospace industry, coatings are not just cosmetic; they are functional barriers against corrosion, wear, oxidation, and environmental stress. These multilayer systems often combine organic binders, inorganic fillers, and metallic pigments, all of which must be applied in a precise sequence to achieve specific protective or decorative outcomes.<\/p>\n\n\n\n<p>The performance of these coatings depends heavily on their thickness, uniformity, and chemical composition. Even slight irregularities in layer structure or filler dispersion can cause mechanical delamination, poor adhesion, accelerated corrosion, and moisture ingress, as well as visual defects that can impact aesthetics or reflectivity.<\/p>\n\n\n\n<p>Because coatings often contain elements with low atomic numbers (e.g., hydrogen, carbon, nitrogen, and oxygen), as well as organic matrices, they can be difficult to analyze with traditional methods. This is because these techniques frequently lack the sensitivity and spatial resolution needed to characterize thin or complex multilayer systems, particularly when accurate layer-by-layer verification is required for qualification and certification.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/tbc-1024x576-1.jpg\" alt=\"SEM EDS of a multilayered coating on an aerospace material, which is used as a thermal barrier\" class=\"wp-image-15906\" srcset=\"https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/tbc-1024x576-1.jpg 1024w, https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/tbc-1024x576-1-300x169.jpg 300w, https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/tbc-1024x576-1-768x432.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><strong>SEM-EDS of a multilayered thermal barrier coating used in aerospace applications, showing the chemical composition of the layers<\/strong><\/figcaption><\/figure>\n\n\n<h2 style=\"font-size: 100%\"><strong>Multi-technique analytical workflow combining SEM-EDS and ToF-SIMS<\/strong><\/h2>\n<p>This blog explores a multi-modal analytical approach that helps improve the precision and reliability of multilayer characterization through a combination of scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and time of flight secondary ion mass spectrometry (ToF-SIMS).<\/p>\n<ol>\n<li><strong> Assessing layer thickness and structure with scanning electron microscopy<br \/><\/strong>Cross-sectional SEM imaging offers a direct visualization of coating architecture. This allows you to measure the thickness of individual layers with nanometer accuracy in order to identify voids, cracks, or inclusions within the coating, and to evaluate interface quality between adjacent layers. High-resolution SEM can clearly resolve even fine coating interfaces, creating a foundation for further chemical and structural analysis.<\/li>\n<li><strong> Mapping of elemental composition with energy-dispersive spectroscopy<br \/><\/strong>The integration of EDS with SEM can generate quantitative elemental information across the imaged coating cross-section. This can reveal filler and pigment distribution, layer composition consistency across thickness profiles, as well as contaminants or compositional gradients that may affect adhesion or corrosion resistance. EDS can also be used for fast, non-destructive verification of coating homogeneity and the material\u2019s conformity to aerospace specifications.<\/li>\n<li><strong> Depth profiling and the detection of organic compounds with ToF-SIMS<br \/><\/strong>The chemical sensitivity of ToF-SIMS is well suited for coatings that contain organic components, polymers, or additives. Through controlled sputtering and ion detection, ToF-SIMS can be used to depth profile multilayer coatings with nanometer-scale resolution, detect light elements and complex organic fragments, identify diffusion zones, and reveal interfacial chemical gradients. This makes ToF-SIMS particularly valuable for the analysis of hybrid coatings, barrier films, or paint systems that contain both inorganic and organic layers.<\/li>\n<\/ol>\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1007\" height=\"576\" src=\"https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/cr-plated-ai-alloy-1024x576-1.jpg\" alt=\"Aerospace material imaged with SEM-EDS, showing a chromium-based coating on an aluminum alloy substrate.\" class=\"wp-image-15907\" srcset=\"https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/cr-plated-ai-alloy-1024x576-1.jpg 1007w, https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/cr-plated-ai-alloy-1024x576-1-300x172.jpg 300w, https:\/\/admin.acceleratingscience.com\/materials\/wp-content\/uploads\/sites\/7\/2026\/07\/cr-plated-ai-alloy-1024x576-1-768x439.jpg 768w\" sizes=\"auto, (max-width: 1007px) 100vw, 1007px\" \/><figcaption class=\"wp-element-caption\"><strong>SEM-EDS reveals the elemental composition of a chromium-based coating on an aluminum alloy substrate, showcasing the protective surface engineering needed for the lightweight metal components used in demanding aerospace environments<\/strong><\/figcaption><\/figure>\n\n\n<h2 style=\"font-size: 100%\"><strong>Comprehensive insight for coating performance and qualification<\/strong><\/h2>\n\n\n<p>By combining these complementary techniques, aerospace manufacturers can gain a holistic understanding of multilayer systems, from morphology to chemistry. This includes precise verification of layer thickness and uniformity, quantitative mapping of elemental and molecular composition, and the detection of organic binders, fillers, and light elements. Together, these observations support the identification of process defects before qualification testing.<\/p>\n\n\n\n<p>Integrated analysis can facilitate formulation optimization for improved barrier performance, process control for consistent coating deposition, and can offer quantitative evidence in support of certification readiness. Ultimately, this helps ensure that coatings meet demanding aerospace durability and appearance standards for everything from turbine housings to structural composites.<\/p>\n\n\n<h2 style=\"font-size: 100%\"><strong>The creation of reliable coatings for high-performance aerospace materials<\/strong><\/h2>\n\n\n<p>For aerospace and defense manufacturers, coating reliability equals mission reliability, and a failure in coating uniformity or composition can compromise an entire system. As aerospace materials evolve toward lighter, more multifunctional coatings, the need for precise analytical control only continues to increase. By leveraging SEM-EDS and ToF-SIMS, engineers can visualize, measure, and validate every layer of protection so that each coating performs as designed, even in extreme operational environments.<\/p>\n\n\n\n<p>Thermo Fisher Scientific\u2019s integrated microscopy and spectrometry platforms empower researchers and manufacturers to perform this advanced characterization, strengthening reliability, safety, and trust in every mission.<\/p>\n\n\n<h3 style=\"font-size: 100%\"><strong>Learn more about the advanced characterization of aerospace materials<\/strong><\/h3>\n\n\n<p>Our \u201cEngineering confidence\u201d eBook highlights how Thermo Scientific electron microscopy and surface analysis technologies are helping researchers and engineers investigate microstructures, evaluate coatings, analyze failure mechanisms, and optimize advanced aerospace materials.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.thermofisher.com\/global\/en\/home\/global\/forms\/industrial\/em-xps-analysis-for-aerospace-and-defense-innovation.html\"><strong>Read more &gt;<\/strong><\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.thermofisher.com\/fr\/fr\/home\/materials-science\/aerospace-materials-characterization.html\"><em>Explore how Thermo Scientific SEM-EDS and ToF-SIMS systems work together to characterize aerospace materials, from coatings to substrates &gt;<\/em><\/a><em><\/em><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key takeaways Aerospace materials use multilayer coating systems to protect against corrosion, wear, oxidation, and other environmental stresses. The performance of these multilayered aerospace coatings is governed by their composition, structure, and uniformity, which have been challenging to analyze with traditional methods. This blog explores how a combination of SEM-EDS and ToS-SIMS analysis supports the<\/p>\n","protected":false},"author":1809,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1278,967,960,961,963,1418],"tags":[1417],"division":[],"class_list":{"0":"post-15900","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-energy-dispersive-spectroscopy","7":"category-energy-dispersive-x-ray-spectroscopy","8":"category-manufacturing-processing","9":"category-process-control","10":"category-scanning-electron-microscopy","11":"category-tof-sims","12":"tag-msd-em","13":"entry"},"_selected_authors":[1732],"_selected_reviewers":[],"acf":[],"yoast_head":"<!-- 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