Hardening by cooling rate control and post-firing heat treatment in Pd-Ag-Sn alloy for bonding porcelain

The aim of this study was to determine the hardening effect by controlling the cooling rate during the porcelain firing process and performing an additional post-firing heat treatment in a Pd-Ag-Sn alloy. The most effective cooling rate for alloy hardening was determined by cooling the specimens at...

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Published in:Dental Materials Journal Vol. 35; no. 2; pp. 309 - 315
Main Authors: YU, Young-Jun, SEOL, Hyo-Joung, CHO, Mi-Hyang, KIM, Hyung-Il, KWON, Yong Hoon
Format: Journal Article
Language:English
Published: Japan The Japanese Society for Dental Materials and Devices 2016
Japanese Society for Dental Materials and Devices
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Abstract The aim of this study was to determine the hardening effect by controlling the cooling rate during the porcelain firing process and performing an additional post-firing heat treatment in a Pd-Ag-Sn alloy. The most effective cooling rate for alloy hardening was determined by cooling the specimens at various cooling rates after oxidation treatment. A subsequent porcelain firing simulation followed by cooling at the selected cooling rate was performed. A post-firing heat treatment was then done at 600°C in a porcelain furnace. The hardening mechanism was characterized by a hardness test, X-ray diffraction, field emission scanning electron microscopy and energy dispersive X-ray spectroscopy. Alloy softening occurred during the porcelain firing process followed by cooling at a controlled cooling rate. A post-firing heat treatment allowed apparent precipitation hardening. It is advisable to perform a postfiring heat treatment at 600°C in a porcelain furnace by annealing metal substructure after porcelain fusing.
AbstractList The aim of this study was to determine the hardening effect by controlling the cooling rate during the porcelain firing process and performing an additional post-firing heat treatment in a Pd-Ag-Sn alloy. The most effective cooling rate for alloy hardening was determined by cooling the specimens at various cooling rates after oxidation treatment. A subsequent porcelain firing simulation followed by cooling at the selected cooling rate was performed. A post-firing heat treatment was then done at 600°C in a porcelain furnace. The hardening mechanism was characterized by a hardness test, X-ray diffraction, field emission scanning electron microscopy and energy dispersive X-ray spectroscopy. Alloy softening occurred during the porcelain firing process followed by cooling at a controlled cooling rate. A post-firing heat treatment allowed apparent precipitation hardening. It is advisable to perform a postfiring heat treatment at 600°C in a porcelain furnace by annealing metal substructure after porcelain fusing.
The aim of this study was to determine the hardening effect by controlling the cooling rate during the porcelain firing process and performing an additional post-firing heat treatment in a Pd-Ag-Sn alloy. The most effective cooling rate for alloy hardening was determined by cooling the specimens at various cooling rates after oxidation treatment. A subsequent porcelain firing simulation followed by cooling at the selected cooling rate was performed. A post-firing heat treatment was then done at 600 degree C in a porcelain furnace. The hardening mechanism was characterized by a hardness test, X-ray diffraction, field emission scanning electron microscopy and energy dispersive X-ray spectroscopy. Alloy softening occurred during the porcelain firing process followed by cooling at a controlled cooling rate. A post-firing heat treatment allowed apparent precipitation hardening. It is advisable to perform a postfiring heat treatment at 600 degree C in a porcelain furnace by annealing metal substructure after porcelain fusing.
The aim of this study was to determine the hardening effect by controlling the cooling rate during the porcelain firing process and performing an additional post-firing heat treatment in a Pd-Ag-Sn alloy. The most effective cooling rate for alloy hardening was determined by cooling the specimens at various cooling rates after oxidation treatment. A subsequent porcelain firing simulation followed by cooling at the selected cooling rate was performed. A post-firing heat treatment was then done at 600℃ in a porcelain furnace. The hardening mechanism was characterized by a hardness test, X-ray diffraction, field emission scanning electron microscopy and energy dispersive X-ray spectroscopy. Alloy softening occurred during the porcelain firing process followed by cooling at a controlled cooling rate. A post-firing heat treatment allowed apparent precipitation hardening. It is advisable to perform a post-firing heat treatment at 600℃ in a porcelain furnace by annealing metal substructure after porcelain fusing.
Author SEOL, Hyo-Joung
KIM, Hyung-Il
YU, Young-Jun
CHO, Mi-Hyang
KWON, Yong Hoon
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  organization: Department of Dental Materials, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University
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  fullname: CHO, Mi-Hyang
  organization: Department of Dental Lab, Wonkwang Health Science University
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  fullname: KIM, Hyung-Il
  organization: Department of Dental Materials, Institute of Translational Dental Sciences, School of Dentistry, Pusan National University
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  fullname: KWON, Yong Hoon
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SubjectTerms Alloys
Cooling rate
Cooling rate control
Dental Bonding
Dental materials
Dental Porcelain
Dentistry
Firing
Furnaces
Gold Alloys
Hardening
Heat treatment
Hot Temperature
Materials Testing
Metal Ceramic Alloys
Palladium base alloys
Pd-Ag-Sn alloy for bonding porcelain
Porcelain
Post-firing heat treatment
Precipitation hardening
Simulated porcelain firing
Title Hardening by cooling rate control and post-firing heat treatment in Pd-Ag-Sn alloy for bonding porcelain
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