An Efficient Experimental Remedy to Protect Bell-Metal from Losing Its Bright Golden Colour
An Efficient Experimental Remedy to Protect Bell-Metal from Losing Its Bright Golden Colour
摘要
Bell-metal, mainly an alloy of copper and tin has been in different uses since many years in the history of human civilization. This work provides an efficient and eco-friendly method to protect bell-metal from oxidation when left in the atmosphere for a long duration which enables the bell-metal to retain its bright golden yellow colour. Titanium nitride thin film deposition by reactive cylindrical magnetron sputtering method is done for this purpose. Besides retaining the bright golden colour of the bell-metal, the deposited titanium nitride film also provides hardness and corrosion resistance to the bell-metal surface thereby providing durability to the material.
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