OXIDATION BEHAVIOR OF NI-BASE CROWN AND BRIDGE ALLOYS

这项研究的目标是继续描述 牙科修复用镍基合金的氧化行为。阶段 牙科实验室过程中合金中发生的转变 将通过X射线的能量色散分析和差示来研究 将这种转变与合金氧化相关联的热分析 行为。我们将进行实验，以检验 合金/氧化物界面，作为氧化物与 合金。因为瓷器与合金的融合可以被认为是 合金/氧化物-瓷界面的持续氧化将是 学习。对现有合金/氧化物/瓷粘结理论的检验 通过研究氧化物的溶解程度和变化来实现 合金/氧化物界面成分的扫描电子研究 X射线显微镜、能量色散分析和扫描俄歇 显微镜。陶瓷/氧化物反应对陶瓷材料连续性的影响 我们将解释合金和氧化瓷之间的界面。这个 这一研究结果将有助于理解合金氧化。 在瓷器粘结过程中，作为推论，使设计新的， 更具成本效益的戴塔尔合金。

The objective of this study is to continue characterization of the oxidation behavior of Ni-base alloys used for dental restorations. Phase transformations occurring in the alloys during dental laboratory procedures will be studied by Energy Dispersive Analysis of X-Rays and Differential Thermal Analysis to relate such transformations to alloy oxidation behavior. Experiments will be done to examine the continuity of the alloy/oxide interface as an indication of the adherence of the oxide to the alloy. Since fusion of porcelain to an alloy may be considered as continued oxidation of the alloy/oxide-porcelain interface will be studied. Testing of current theories of alloy/oxide/porcelain bonding will be done by studying the extent of oxide dissolution and changes in composition at the alloy/oxide interface using Scanning Electron Microscopy, Energy Dispersive Analysis of X-Rays and Scanning Auger Microscopy. The effect of porcelain/oxide reactions on the continuity of the interface between alloy and oxideporcelain will be explained. The results of this research will be helpful in understanding alloy oxidation during porcelain bonding, and, as a corollary, enable the design of new, more cost efficient detal alloys.