Thermal stability and chemical-physical features of gypsum-bonded investment with regard to burnout cycle (Contributo in atti di convegno)

Type
Label
  • Thermal stability and chemical-physical features of gypsum-bonded investment with regard to burnout cycle (Contributo in atti di convegno) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • G.M. Ingo, C. Riccucci, T. de Caro, P. Sbornicchia, G. Montesperelli, G. Gusmano (2005)
    Thermal stability and chemical-physical features of gypsum-bonded investment with regard to burnout cycle
    in 19th Santa Fe Symposium on Jewelry Manufacturing Technology, Albuquerque, New Mexico USA, 22-25/05/2005
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G.M. Ingo, C. Riccucci, T. de Caro, P. Sbornicchia, G. Montesperelli, G. Gusmano (literal)
Pagina inizio
  • 255 (literal)
Pagina fine
  • 273 (literal)
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  • Proceedings of the 19th Santa Fe Symposioum on Jewelry Manufacturing Technology (literal)
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  • Volume unico (literal)
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  • Volume unico (literal)
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  • 19 (literal)
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  • G.M. Ingo [1], C. Riccucci [1], T. de Caro [1], P. Sbornicchia [2], G. Montesperelli [2], G. Gusmano [2] [1] Istituto per lo Studio dei materiali nanostrutturati-CNR, Area della Ricerca di Roma 1, via Salaria Km 29.3, 00015 Monterotondo, Rome, Italy [2] Dipartimento Scienze e Tecnologie Chimiche, Università Tor Vergata, Rome, Italy (literal)
Titolo
  • Thermal stability and chemical-physical features of gypsum-bonded investment with regard to burnout cycle (literal)
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  • 0-931913-35-7 (literal)
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  • Eddie Bell et al. (literal)
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  • Eddie Bell (literal)
Abstract
  • Thermal stability, mechanical properties and chemical and physical characteristics of a type of gypsum bonded investment commonly used for the preparation of moulds for investment casting have been studied, with regard to the burnout cycle. Scanning electron microscopy coupled with micro-chemical analysis by X-ray energy dispersion (SEM + EDS), X-ray diffractometry (XRD), differential thermal analysis coupled with thermogravimetry (DTA - TG), porosimetry and compressive strength evaluation have been used for this research. The results show a remarkable effect of burnout cycle temperature and duration on mechanical properties and thermal stability of the investment. These variations have been correlated with thermal expansion, porosity, size pore distribution produced by the parameters of the burnout cycle in the two components of the material, silica and gypsum, respectively. From the point of view of the technology, the results show the possibility of managing the final properties of gypsum based investment in the best way, by suitable adaptation of burnout cycle time, maximum temperature, heating and cooling rate. (literal)
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