In Situ Investigation of Debinding of Non-Oxide Ceramic

Klimera, Andreas; Raether, F.; Horn, P. Schulze

doi:10.4028/3-908158-01-x.1684

Cited by 1 publication

(3 citation statements)

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“…The kinetic field method could be successfully transferred to describe debinding. The densification rate was replaced by the weight loss rate and the isodensity lines were substituted by isoweight loss lines 15 . Again straight lines were obtained for various ceramic materials, e.g.…”

Section: Resultsmentioning

confidence: 99%

“…The frequencies of natural vibrations of the string were recorded. This sensor was used in a range of 90–200 g 15 . Resolution was 200 mg.…”

Section: Methodsmentioning

confidence: 99%

“…With the TOM a novel type of in situ measuring techniques was introduced 10 . It was based on the accurate optical measurement of dimensional changes of the sample during the heat treatment and combined with various other measuring techniques: TG, 12 laser‐flash technique, 10 laser light scattering, 13 loading dilatometry, 14 and contact angle measurement 15 . The optical measuring could be performed in various atmospheres and even in closed crucibles using sapphire windows 5,16…”

Section: Introductionmentioning

confidence: 99%

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Current State of In Situ Measuring Methods for the Control of Firing Processes

Raether

2009

Journal of the American Ceramic Society

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A combination of in situ measuring methods and computer simulation is suggested for the optimization of debinding and sintering processes in lab furnaces. From the optical measurement of sintering shrinkage and the mass loss measurement during debinding the respective reaction rates are derived. A high resolution of 1 lm and a reproducibility better than 0.3% were obtained for the optical measurement of sintering shrinkage. The atmospheres in the in situ measuring furnaces have to be closely matched to the production furnaces, to allow a transfer of the optimized heating cycles. A kinetic field method is used to obtain a model-free prediction of the debinding and sintering kinetics. Various other macroscopic in situ measuring methods are discussed, regarding their role during process optimization of ceramics. For example, heat transfer properties, required to calculate temperature and stress distributions during the heat treatment, were obtained by a modified laser-flash technique.

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Section: Resultsmentioning

confidence: 99%

“…The frequencies of natural vibrations of the string were recorded. This sensor was used in a range of 90–200 g 15 . Resolution was 200 mg.…”

Section: Methodsmentioning

confidence: 99%