NDLI: Electrodeposition of Molybdenum from Molten Salt

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Electrodeposition of Molybdenum from Molten Salt

Content Provider	Semantic Scholar
Author	Nitta, Koji Majima, Masatoshi Inazawa, Shinji Kitagawa, Kan Nohira, Toshiyuki Hagiwara, Rika
Copyright Year	2010
Abstract	Molybdenum and tungsten, which are called refractory metals, are widely used for industrial applications such as heat resistance material because of their high melting point and high strength. However, they are often used in simple shapes, such as plate or rod, because they are hard to be processed. Although the gas phase methods are used when a complicated shape is demanded, there are some problems in the rate or the uniformity of deposition. On the other hand, thin molybdenum or tungsten foils are increasingly demanded for the thermal emission materials such as heat sink. However, it is difficult to manufacture these foils because of the difficulty in process. So, we are developing the electroplating process to solve these problems (1), (2). Although refractory metals, which are base metals, are not electrodeposited from aqueous solution, they can be electrodeposited from molten salts containing no water (3)-(8). However, a substrate is damaged because molten salts which are reported as the baths for electrodeposition are used at high temperature. In this study, we aimed at the electrodeposition of molybdenum under 200oC. The key points of the selection of low melting point molten salt are as follows; (i) The electrochemical and thermal stabilities of cation, (ii) High ionic conductivity, (iii) Ease in handling, and (iv) No formation of by-product in anode. Then we selected N-ethyl-N-methyl-pyrrolidinium chloride (EMPryCl; Fig. 1)-ZnCl2 melt. In this paper, we report the physicochemical properties, the electrochemical properties and the electrodeposition of molybdenum from this melt.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://global-sei.com/technology/tr/bn70/pdf/70-11.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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