Co-C共晶点研制及评价

doi:10.3969/j.issn.1000-1158.2019.01.02

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Abstract According to the CCT-WG5s requirement of Co-C eutectic fixed point to all measurement institutions, a filling system was designed and built, using the direct eutectic filling method filled Co-C cells, all cells met the requirement of realizing the Co-C eutectic fixed point. An improvement program was put forward which aimed at solving the disadvantages of direct filling method: low filling efficiency and high probability of crucible breaking, and two Co-C eutectic fixed points were filled successfully. The result of realizing the Co-C-2# eutectic fixed point is that the uncertainty of ascertaining the inflection point temperature was 5.3 mK, which CCTs requirement is less than 10 mK; the short-term repeatability was 9.6 mK, which CCTs requirement is less than 20 mK.

Key words： metrology radiation thermometry cobalt-carbon eutectic point filling method

Received: 22 March 2017 Published: 07 January 2019

PACS:

TB942

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	Articles by authors
	MENG Su
	CAI Jing
	DONG Lei

Cite this article:

MENG Su,CAI Jing,DONG Lei. The Development and Evaluation of the Co-C Eutectic Point[J]. Acta Metrologica Sinica, 2019, 40(1): 8-12.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.01.02 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I1/8

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