Dimensional Effects of Hybrid Bond Layers on CFRP Metallized by Ti Cold Spray

IF 3.2 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Po-Lun Feng, Kinal Kim, Adolfo Blassino, Isaac Nault, Sang-Eui Lee, Steven Nutt
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Abstract

Hybrid bond layers (BLs) were designed, fabricated, and evaluated for cold spray metallization of CFRP. The bond layers consisted of metal mesh embedded in a polymer film adhesive co-cured to the CFRP. Efforts were devoted to identifying the critical opening ratio—i.e., the ratio of mesh opening size to powder diameter, for deposition of an adherent coating. Analysis of powder deposited at mesh openings show a transition from erosion (at a mesh opening ratio of 6.4) to mechanical interlocking and formation of a continuous coating with decreasing opening ratio. Selection of opening ratio yielded either (a) a grid of consolidated thin-walled deposits atop mesh wires separated by microchannel openings, or (b) densified coatings of cold-sprayed Ti. The effective opening ratio increased with increasing diameter ratio—i.e., the ratio of wire diameter to powder size, a consequence of eroded wire peripheries at shallow impact angles. These findings inform the design of future hybrid BLs, in concert with the selection of powder size, for cold spray metallization of CFRP.

Abstract Image

Ti冷喷涂CFRP金属化杂化粘结层的尺寸效应
对CFRP冷喷涂金属化复合粘结层进行了设计、制备和评价。粘结层由金属网嵌入在与CFRP共固化的聚合物薄膜粘合剂中组成。努力确定临界开启比,即。网孔尺寸与粉末直径之比,用于沉积粘附涂层。对在网孔处沉积的粉末的分析表明,随着网孔比的减小,粉末从侵蚀(网孔比为6.4时)向机械联锁和连续涂层的形成转变。打开比的选择可以产生(a)由微通道开口隔开的网丝上的薄壁沉积物网格,或者(b)冷喷涂Ti的致密涂层。有效开口比随直径比的增大而增大。,线材直径与粉末尺寸之比,这是在浅冲击角下线材外围被侵蚀的结果。这些发现告知未来混合BLs的设计,与粉末尺寸的选择一致,用于CFRP的冷喷涂金属化。
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来源期刊
Journal of Thermal Spray Technology
Journal of Thermal Spray Technology 工程技术-材料科学:膜
CiteScore
5.20
自引率
25.80%
发文量
198
审稿时长
2.6 months
期刊介绍: From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.
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