High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy

W/CuCrZr alloy composite panels are promising plasma-facing components for use in future nuclear-fusion reactors. However, the intrinsic immiscibility of W and Cu makes joining them difficult. In this study, we developed a vacuum diffusion bonding method that involves sandblasting of the W substrate...

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Autores principales:	Yuanyuan Chen, Yuan Huang, Lu Han, Dongguang Liu, Laima Luo, Chong Li, Chenxi Liu, Zumin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	W CuCrZr Vacuum diffusion bonding Sandblasting Cu plating Plasma-facing components Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/88ebe3e11b4b46608e545eee71836d81
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spelling	oai:doaj.org-article:88ebe3e11b4b46608e545eee71836d812021-12-02T05:01:46ZHigh-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy2238-785410.1016/j.jmrt.2021.11.069https://doaj.org/article/88ebe3e11b4b46608e545eee71836d812021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S223878542101348Xhttps://doaj.org/toc/2238-7854W/CuCrZr alloy composite panels are promising plasma-facing components for use in future nuclear-fusion reactors. However, the intrinsic immiscibility of W and Cu makes joining them difficult. In this study, we developed a vacuum diffusion bonding method that involves sandblasting of the W substrate surface, Cu electroplating and annealing, and subsequent vacuum diffusion bonding to realize W/CuCrZr joints with high bond strength. The morphologies and structures of the W and W/CuCrZr joints were investigated by scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy. Sandblasting was found to induce the plastic deformation, roughening, and grain refinement of the W substrate surface. During Cu plating on the surface of the sandblasted W (and subsequent annealing), the Cu layer was embedded in micron-scale irregular pits on the sandblasted W surface, creating a tight bond. The shear bond strength (184 MPa) and bonding quality of a W/CuCrZr joint obtained with the sandblasting/Cu interlayer method was superior to those of a W/CuCrZr joint prepared by conventional vacuum diffusion bonding. The structural origins of this superior W/CuCrZr joint were related to a region of W and Cu interdiffusion with a thickness of approximately 30 nm. This improved vacuum diffusion bonding method for W and CuCrZr can facilitate the development of plasma-facing components for future nuclear-fusion devices.Yuanyuan ChenYuan HuangLu HanDongguang LiuLaima LuoChong LiChenxi LiuZumin WangElsevierarticleWCuCrZrVacuum diffusion bondingSandblastingCu platingPlasma-facing componentsMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 6260-6271 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	W CuCrZr Vacuum diffusion bonding Sandblasting Cu plating Plasma-facing components Mining engineering. Metallurgy TN1-997
spellingShingle	W CuCrZr Vacuum diffusion bonding Sandblasting Cu plating Plasma-facing components Mining engineering. Metallurgy TN1-997 Yuanyuan Chen Yuan Huang Lu Han Dongguang Liu Laima Luo Chong Li Chenxi Liu Zumin Wang High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
description	W/CuCrZr alloy composite panels are promising plasma-facing components for use in future nuclear-fusion reactors. However, the intrinsic immiscibility of W and Cu makes joining them difficult. In this study, we developed a vacuum diffusion bonding method that involves sandblasting of the W substrate surface, Cu electroplating and annealing, and subsequent vacuum diffusion bonding to realize W/CuCrZr joints with high bond strength. The morphologies and structures of the W and W/CuCrZr joints were investigated by scanning electron microscopy, X-ray diffraction, and high-resolution transmission electron microscopy. Sandblasting was found to induce the plastic deformation, roughening, and grain refinement of the W substrate surface. During Cu plating on the surface of the sandblasted W (and subsequent annealing), the Cu layer was embedded in micron-scale irregular pits on the sandblasted W surface, creating a tight bond. The shear bond strength (184 MPa) and bonding quality of a W/CuCrZr joint obtained with the sandblasting/Cu interlayer method was superior to those of a W/CuCrZr joint prepared by conventional vacuum diffusion bonding. The structural origins of this superior W/CuCrZr joint were related to a region of W and Cu interdiffusion with a thickness of approximately 30 nm. This improved vacuum diffusion bonding method for W and CuCrZr can facilitate the development of plasma-facing components for future nuclear-fusion devices.
format	article
author	Yuanyuan Chen Yuan Huang Lu Han Dongguang Liu Laima Luo Chong Li Chenxi Liu Zumin Wang
author_facet	Yuanyuan Chen Yuan Huang Lu Han Dongguang Liu Laima Luo Chong Li Chenxi Liu Zumin Wang
author_sort	Yuanyuan Chen
title	High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
title_short	High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
title_full	High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
title_fullStr	High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
title_full_unstemmed	High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy
title_sort	high-strength vacuum diffusion bonding of cu-plated, sandblasted w and cucrzr alloy
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/88ebe3e11b4b46608e545eee71836d81
work_keys_str_mv	AT yuanyuanchen highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT yuanhuang highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT luhan highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT dongguangliu highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT laimaluo highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT chongli highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT chenxiliu highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy AT zuminwang highstrengthvacuumdiffusionbondingofcuplatedsandblastedwandcucrzralloy
_version_	1718400776067350528

High-strength vacuum diffusion bonding of Cu-plated, sandblasted W and CuCrZr alloy

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