Govindan, Anil and Lal, Tripurari and Singh, Anand (2008) Comparative Studies on Zirconia Ceramics as a Material for Mass Standards. MAPAN - Journal of Metrology Society of India, 23 (3). pp. 173-176. ISSN 0974-9853

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Abstract

The problem with artifact masses made of stainless steel, the material of choice at present, is that it is insufficiently stable with handling or time. As hard and impermeable as stainless steel appears, at the microscopic level it is covered in an oxide layer and small scratches left by polishing, and there are small holes and pits in the surface. All of these features tend to accumulate the dirt and grease that float around in the atmosphere. Consequently masses do get heavier with time. Steel and its alloys have survived as a material for mass standards among the industry circles. This is due to its density (similar to 8000 kg/m(3)), and its universal availability. Steel fails to deliver as a material for standards when it comes to handling and vulnerability to corrosion. An alternative for the material is ceramics. As of now Zirconia ceramics turns out to be a good candidate for its use as a material for mass standards. Except for its density zirconia ceramics surpass steel on all counts.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Springer Verlag.
Subjects:	Instruments/ Instrumentation Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	23 Jan 2013 07:19
Last Modified:	23 Jan 2013 07:19
URI:	http://npl.csircentral.net/id/eprint/957

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