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Fabrication of Volumetric Dilatometer Using Buoyancy Under High Pressure Gas
Published online by Cambridge University Press: 15 February 2011
Abstract
Sintering processes are monitored by dilatometry. A conventional dilatometer under high gas pressure (typical HIPping conditions) is constructed using graphite rods to examine linear thermal expansivity of one sample. This method has a few disadvantages, such as the pressure of graphite rods acting as a uniaxial hot press. The advantage of a HIP method, compared to a hot press sintering is the capacity to process many samples at a time. The graphite rod method is applicable for only one sample. A volumetric dilatometer was developed using buoyancy under high gas pressure, which can monitor HIP sintering processes of many samples and check for capsule failure.
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- Copyright © Materials Research Society 1992