The increasing interaction between laboratories from universities and research institutes with other society sectors, such as industries and government agencies, has led a growing number of those laboratories to adopt quality management systems based on international requirements standards. As a consequence, there is a crescent interest on practical information related to implementation of quality management systems in laboratories that provide testing services and carry out research activities. In this context, this article presents the practical approach applied for implementing a quality management system based on ISO/ IEC 17025 at the materials metrology division (Dimat)-Inmetro and at its laboratories. The approach is consistent with a hierarchical implementation, where the laboratory quality management system must fulfill ISO/IEC 17025 requirements as well as internal requirements from the upper layers of the quality management system. The implementing approach discussed here was specifically developed to be applied inside a particular hierarchical quality management structure. However, due to its general characteristics, it can be useful for diverse implementing cases.
The remanence of sintered SmCo5 magnets is a direct function of their crystallographic texture. The Jr∕Js ratio was determined by electron backscattered diffraction (EBSD) for SmCo5 magnets which had been oriented in a pulsed field of 6T, compressed isostatically, and then sintered at 1150–1170°C for 1h. The experimentally determined EBSD distribution does not follow a Gaussian or a function of the form f(θ=cosnθ). EBSD measurements provided the same Jr∕Js value (0.91) as a microstructural model plus remanence measurements. X-ray diffraction Schulz pole figures resulted in a slightly higher Jr∕Js value (0.92), probably due to neglecting misaligned grains.
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