Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13174
ชื่อเรื่อง: Lost wax casting conditions with tourmaline in situ
ผู้แต่ง: Wongpreedee K.
Peerawat A.
Phichaikamjornwut B.
Bootkul D.
Keywords: Casting
Gems
Hardness
Ion implantation
Ions
Casting conditions
Casting process
Heating conditions
High hardness
High temperature
Inclusion growth
Tourmaline
Tree conditions
Silicate minerals
วันที่เผยแพร่: 2017
บทคัดย่อ: The technique of stone-in-place casting has been established in jewelry production for three decades. However, the process is not widely used since it is limited to precious stones with high hardness and high stability at high temperature. This experiment tested tourmaline, which is a semi-precious gemstone having less hardness and less stability compared with precious stones. The objective was to achieve the conditions of a lost-wax casting process with tourmaline placed in waxes in the casting process. The experiment was divided into two parts. The first part was to understand the tolerance of tourmaline under the heating conditions. Natural tourmaline stones were investigated and compared inclusions tested at a temperature of 700°C. Tourmaline with ion-implantation was also heated to 700°C for comparison. The second part was to test tourmaline in-place casting with tree conditions of flask casting at 550°C, 625°C, and 700°C. The results showed that stones were able to tolerate as much as at 700°C. The inclusion growth of ion-implantation under heating to 700°C also observed the growth of inclusion in the same way as untreated tourmaline. The casting condition at 550°C showed better results. The highest probability of stones breaking after casting occurred in bezel settings. © 2017 Trans Tech Publications, Switzerland.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13174
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027076469&doi=10.4028%2fwww.scientific.net%2fKEM.737.595&partnerID=40&md5=d64250331290444f5a7f86bf5299d0bc
ISSN: 10139826
Appears in Collections:Scopus 1983-2021

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