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金属悬浮液的高速悬浮火焰喷涂（HVSFS）

High Velocity Suspension Flame Spraying (HVSFS) of Metal Suspensions.

作者信息

Blum Matthias, Krieg Peter, Killinger Andreas, Gadow Rainer, Luth Jan, Trenkle Fabian

机构信息

Institute for Manufacturing Technologies of Ceramic Components and Composites (IMTCCC), University of Stuttgart, Allmandring 7b,70569 Stuttgart; Germany.

obz innovation GmbH, Elsässer Straße 10, 79189 Bad Krozingen, Germany.

出版信息

Materials (Basel). 2020 Jan 30;13(3):621. doi: 10.3390/ma13030621.

DOI:10.3390/ma13030621
PMID:32019258
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7040802/
Abstract

Thermal spraying of metal materials is one of the key applications of this technology in industry for over a hundred years. The variety of metal-based feedstocks (powders and wires) used for thermal spray is incredibly large and utilization covers abrasion and corrosion protection, as well as tribological and electrical applications. Spraying metals using suspension- or precursor-based thermal spray methods is a relatively new and unusual approach. This publication deals with three metal types, a NiCr 80/20, copper (Cu), and silver (Ag), sprayed as fine-grained powders dispersed in aqueous solvent. Suspensions were sprayed by means of high-velocity suspension spraying (HVSFS) employing a modified TopGun system. The aim was to prepare thin and dense metal coatings (10-70 µm) and to evaluate the process limits regarding the oxygen content of the coatings. In case of Cu and Ag, possible applications demand high purity with low oxidation of the coating to achieve for instance a high electrical conductivity or catalytic activity. For NiCr however, it was found that coatings with a fine dispersion of oxides can be usable for applications where a tunable resistivity is in demand. The paper describes the suspension preparation and presents results of spray experiments performed on metal substrates. Results are evaluated with respect to the phase composition and the achieved coating morphology. It turns out that the oxidation content and spray efficiency is strongly controlled by the oxygen fuel ratio and spray distance.

摘要

金属材料的热喷涂是这项技术在工业领域一百多年来的关键应用之一。用于热喷涂的各种金属基原料（粉末和线材）种类极其繁多，其应用涵盖耐磨、防腐以及摩擦学和电气应用。使用基于悬浮液或前驱体的热喷涂方法喷涂金属是一种相对新颖且不寻常的方法。本出版物涉及三种金属类型，即NiCr 80/20、铜（Cu）和银（Ag），它们以分散在水性溶剂中的细颗粒粉末形式进行喷涂。悬浮液通过采用改进型TopGun系统的高速悬浮液喷涂（HVSFS）进行喷涂。目的是制备薄而致密的金属涂层（10 - 70微米），并评估涂层氧含量方面的工艺极限。对于铜和银，可能的应用要求涂层具有高纯度且低氧化，以实现例如高电导率或催化活性。然而，对于NiCr，发现具有精细氧化物分散的涂层可用于需要可调电阻率的应用。本文描述了悬浮液的制备，并展示了在金属基材上进行的喷涂实验结果。根据相组成和所获得的涂层形态对结果进行评估。结果表明，氧化含量和喷涂效率受到氧燃料比和喷涂距离的强烈控制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/3fa9e50c8b00/materials-13-00621-g020.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/0b6ec91ef7ec/materials-13-00621-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/516516ae4427/materials-13-00621-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/347e783b2bed/materials-13-00621-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/7759186f1231/materials-13-00621-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/372a369ebd39/materials-13-00621-g016.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/853746082692/materials-13-00621-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/3fa9e50c8b00/materials-13-00621-g020.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/8763b47448ad/materials-13-00621-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/5e4be86e4bc8/materials-13-00621-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/676d066525d1/materials-13-00621-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/6fc64cea3245/materials-13-00621-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/210589391d6a/materials-13-00621-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/cd4b592aa04f/materials-13-00621-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/8bd11168f2f6/materials-13-00621-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/00f587911d33/materials-13-00621-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/0b6ec91ef7ec/materials-13-00621-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/516516ae4427/materials-13-00621-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/545ecdae17be/materials-13-00621-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/a8ae76d6ffe1/materials-13-00621-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/347e783b2bed/materials-13-00621-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/7759186f1231/materials-13-00621-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/372a369ebd39/materials-13-00621-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/a465e87edc4b/materials-13-00621-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/5fe22e946786/materials-13-00621-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/853746082692/materials-13-00621-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fada/7040802/3fa9e50c8b00/materials-13-00621-g020.jpg

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本文引用的文献

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High velocity suspension flame spraying (HVSFS) of metal doped bioceramic coatings.金属掺杂生物陶瓷涂层的高速悬浮火焰喷涂（HVSFS）
Bioact Mater. 2017 May 2;2(3):162-169. doi: 10.1016/j.bioactmat.2017.04.006. eCollection 2017 Sep.
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Anti-bacterial and cytotoxic properties of plasma sprayed silver-containing HA coatings.等离子喷涂含银羟基磷灰石涂层的抗菌及细胞毒性特性
J Mater Sci Mater Med. 2008 Dec;19(12):3603-9. doi: 10.1007/s10856-008-3529-8. Epub 2008 Jul 19.