Machado R R, Low S, Germak A
INMETRO, Duque de Caxias, Brazil.
NIST, Gaithersburg, USA.
Acta IMEKO (2012). 2020;9(5). doi: 10.21014/acta_imeko.v9i5.979.
This paper describes an overview of the capability of the NMIs that participated on the CCM Pilot Study measurement systems, conducted by the CIPM/CCM/Working Group on Hardness, to characterize the Rockwell hardness diamond indenter geometry, by measuring the included cone angle, the straightness of the generatrix, the spherical tip radius, the deviation of the local radius and the tilt angle. Nine NMIs took part in this study: INMETRO (Brazil); INRiM (Italy); KRISS (South Korea); NIM/PR (China); NIMT (Thailand); NIST (USA); PTB (Germany); TUBITAK UME (Turkey); VNIIFTRI (Russia), where INMETRO (Brazil) served as pilot laboratory.
本文介绍了参与由国际计量委员会/硬度咨询委员会/硬度工作组开展的CCM试点研究测量系统的国家计量院(NMI)的能力概况,这些国家计量院通过测量圆锥角、母线直线度、球形尖端半径、局部半径偏差和倾斜角来表征洛氏硬度金刚石压头的几何形状。九个国家计量院参与了本研究:巴西国家计量、质量和技术研究所(INMETRO);意大利国家计量研究院(INRiM);韩国标准科学研究院(KRISS);中国国家计量院/中国计量科学研究院(NIM/PR);泰国国家计量研究所(NIMT);美国国家标准与技术研究院(NIST);德国物理技术研究院(PTB);土耳其科学技术研究理事会国家计量研究所(TUBITAK UME);俄罗斯联邦国家物理技术研究所(VNIIFTRI),其中巴西国家计量、质量和技术研究所(INMETRO)担任试点实验室。