Solder microstructures were found to be influenced by those of the castings. A tendency of solder to match the microstructures contacted during its solidification was demonstrated. Several different types of defects were identified in the soldered joints. Tentative correlations of the observed microstructures and defects with physical properties, corrosion resistance and dimensional changes of soldered structures have been made.
Get full access to this article
View all access options for this article.
References
1.
Asgar, K.; and Peyton, F.A.: Effect of Microstructure on the Physical Properties of Cobalt-Base Alloys , J Dent Res40:63-72, 1961.
2.
Shell, J.S.: Metallography of Precious Metals Used in Dentistry, JADA12:794-806, 1925.
3.
El-Ebrashi, M.K.; Asgar, K.; and Bige-Low, W.C.: Electron Microscopy of Gold Soldered Joints , J Dent Res47:5-11, 1968.
4.
Anderson, T.R. ; Fairhurst, C.W.; and Ryge, G.: Method for Evaluation of Dimensional Changes in Dental Bridge Soldering, J Dent Res37:96, 1958.
5.
El-Ebrashi, M.K.; Craig, R.G.; and Peyton, F.A.: Experimental Stress Analysis of Dental Restoration. Part VII. Structural Design and Stress Analysis of Fixed Partial Dentures, J Prosthet Dent23:177-186, 1970.
6.
Santos, J.F.F. ; Muench, A.; and Ueti, M.: Hardness of Gold Soldered Joints as a Function of Heat Treatments, Rev Fac Odont SPaulo13:79-84, 1975.
