A Burdakin et al 2008 Metrologia 45 75 doi:10.1088/0026-1394/45/1/011
A Burdakin1, B Khlevnoy1, M Samoylov1, V Sapritsky1, S Ogarev1, A Panfilov1, G Bingham2, V Privalsky2, J Tansock2 and T Humpherys2
Show affiliationsMelting/freezing curves are studied for the single-component Ga and bimetallic eutectic alloys Ga–In, Ga–Sn, Ga–Zn and Ga–Al in small-size cells. These phase-transition studies were conducted at VNIIOFI and SDL in order to design small-size fixed-point devices for metrological monitoring of temperature sensors on autonomous platforms. Our prime objective is to develop technology to improve the long-term performance of in-flight blackbody calibration sources of space-borne radiometers. The repeatability of the melting temperature of Ga and the eutectic melting temperatures of Ga–In, Ga–Sn and Ga–Zn fixed points were studied. Our results show that small cells containing Ga and some Ga-based eutectic alloys can be used as melting fixed-point standards.
64.70.D- Solid–liquid transitions
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
Issue 1 (February 2008)
Received 11 July 2007
Published 18 January 2008
A Burdakin et al 2008 Metrologia 45 75
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