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KMID : 0362120060280020321
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Journal of Technologic Dentistry
2006 Volume.28 No. 2 p.321 ~ p.329
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Microstructures and Mechanical Properties of Beryllium(Be)-free Ni-Cr-Mo based Alloys for Metal-Ceramic Crown
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Song Kyeong-Woo
No Hak
Ko Eun-Kyoung
Jung Jong-Hyun
Lee Jung-Hwan
Han Jae-Ick
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Abstract
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The popularity of Ni-Cr-Mo based metal alloys for metal-ceramic crown have increased recently because of low price, superior yield strength and rigidity. the use of these alloys give them the potential advantage of thinner copping with the required rigidity for long span bridges. The purpose of this study was to assess the microstructures and mechanical properties of Ni-Cr-Mo-(Si,Al,Nb,Zr,Ti.Cu,Mm) based Alloys not containing beryllium(Be) related toxic effects. The abtained results indicated that as-cast these specimen alloys showed compositional and microstructural differences, and mechanical properties values of Ni69Cr20Mo5Si2Al4 alloy among these specimen alloys was found to be superior to those of commercial Ni-Cr based alloy using in market place today.
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KEYWORD
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metal-ceramic crown, copping, long span bridges, the microstructures andmechanical properties
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