The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 31 Issue 2
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- Pages.191-205
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- 1993
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
A STUDY ON FLEXURE STRENGTH OF THE SOLDER JOINTS FORMED USING VARIOUS SOLDERING TECHNIQUES FOR CERAMO-METAL ALLOYS
도재소부전장관용 합금의 납착방법에 따른 납착부 굽힘강도에 대한 연구
- Kim, Jin-Yeoul (Dept. of Prosthodontics, College of Dentistry. Pusan National University) ;
- Chun, Young-Charn (Dept. of Prosthodontics, College of Dentistry. Pusan National University)
- Published : 1993.04.01
Abstract
In order to compare the strength of soldered joints relative to the various sol dering method, soldering processes were performed using Palladium based ceramo-metal alloy(Bond-on 4)and Nickel-cromium alloy(Vera Bond). The obtained data include difference in strength between presoldering and postsoldering The data also contain difference among postsoldered groups for 3 difference soldering methods(torch, infrared. Oven) The following results were obtained : 1. For postsoldering with Pd alloy, the oven-using group showed the highest strength while the difference in strength between the torch-using group and the infrared machine group was negligible. 2. For Pd alloy with the torch method, postsoldering resulted in the higher strength than presoldering. 3. There was a negligible difference in strength between presoldering and postsoldering when Ni-Cr alloy with torch method is used. 4. Through microscopic study of the fractured surfaces, the torch-using group showed more porosity than both the oven-using and the infrared machine groups. 5. In terms of fracturing patterns, the oven-using group showed adhesive failure while both the torch and the infrared machine groups showed cohesive failure and cohesive-adhesive failure.
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