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Harper Rj - One of the best experts on this subject based on the ideXlab platform.

  • Fatigue life of preCeramic soldered and postCeramic soldered joints.
    International Journal of Prosthodontics, 1993
    Co-Authors: Butson Tj, Ma T, Jack I. Nicholls, Harper Rj
    Abstract:

    : This research investigated the fatigue life (ie, the number of cycles of a given stress that can be sustained by a sample prior to catastrophic failure) of Metal Ceramic soldering. One Metal Ceramic Alloy was joined using four postCeramic solders and one preCeramic solder. All specimens received appropriate heat treatment simulating Ceramic application although no porcelain was applied. Five specimens were fabricated for each solder type, and a 35,000 psi (241.4 MPa) fatigue stress was applied to each solder joint during specimen testing. The test variable was the number of stress cycles required to fail each specimen. The postCeramic solders exhibited significantly higher fatigue lives than did the preCeramic solder. Scanning electron microscope analysis showed that the preCeramic solder not only exhibited a larger grain size, but also showed micropores between these grains.

Butson Tj - One of the best experts on this subject based on the ideXlab platform.

  • Fatigue life of preCeramic soldered and postCeramic soldered joints.
    International Journal of Prosthodontics, 1993
    Co-Authors: Butson Tj, Ma T, Jack I. Nicholls, Harper Rj
    Abstract:

    : This research investigated the fatigue life (ie, the number of cycles of a given stress that can be sustained by a sample prior to catastrophic failure) of Metal Ceramic soldering. One Metal Ceramic Alloy was joined using four postCeramic solders and one preCeramic solder. All specimens received appropriate heat treatment simulating Ceramic application although no porcelain was applied. Five specimens were fabricated for each solder type, and a 35,000 psi (241.4 MPa) fatigue stress was applied to each solder joint during specimen testing. The test variable was the number of stress cycles required to fail each specimen. The postCeramic solders exhibited significantly higher fatigue lives than did the preCeramic solder. Scanning electron microscope analysis showed that the preCeramic solder not only exhibited a larger grain size, but also showed micropores between these grains.

Hyojoung Seol - One of the best experts on this subject based on the ideXlab platform.

Zha Desong - One of the best experts on this subject based on the ideXlab platform.

  • the casting performance of new cobalt chromium Metal Ceramic Alloy tested by linear shrinkage method
    Journal of Shenyang Medical College, 2011
    Co-Authors: Zha Desong
    Abstract:

    Objective:To compare the linear shrinkage between new cobalt-chromium Metal Ceramic Alloy and clinical applied cobalt-chromium Metal Ceramic Alloy.Methods:Molds with epoxy,model of diameter 4mm,length 30mm,wax type,a new cobalt-chromium mental Ceramic Alloy and clinical applied cobalt-chromium mental Ceramic Alloy were made.After 10 mechanic room routine embedding,casting,casting separation,sandblasting,resection runner pipe,the length contraction of new cobalt-chromium mental Ceramic Alloy and clinical applied cobalt-chromium mental Ceramic Alloy were measured before and after casting with a vernier caliper.Results: New cobalt-chromium Metal Ceramic Alloy and clinical applied cobalt-chromium Metal Ceramic Alloy had shown varying degrees of contraction,the t test results showed P0.05.Conclusion:This study evaluated a new cobalt-chromium Metal Ceramic Alloy and clinical applied cobalt-chromium Metal Ceramic Alloy casting properties,linear shrinkage rate between the two has no differences in performance.

Ma T - One of the best experts on this subject based on the ideXlab platform.

  • Fatigue life of preCeramic soldered and postCeramic soldered joints.
    International Journal of Prosthodontics, 1993
    Co-Authors: Butson Tj, Ma T, Jack I. Nicholls, Harper Rj
    Abstract:

    : This research investigated the fatigue life (ie, the number of cycles of a given stress that can be sustained by a sample prior to catastrophic failure) of Metal Ceramic soldering. One Metal Ceramic Alloy was joined using four postCeramic solders and one preCeramic solder. All specimens received appropriate heat treatment simulating Ceramic application although no porcelain was applied. Five specimens were fabricated for each solder type, and a 35,000 psi (241.4 MPa) fatigue stress was applied to each solder joint during specimen testing. The test variable was the number of stress cycles required to fail each specimen. The postCeramic solders exhibited significantly higher fatigue lives than did the preCeramic solder. Scanning electron microscope analysis showed that the preCeramic solder not only exhibited a larger grain size, but also showed micropores between these grains.