Ibrahim R M
Crown and Bridge Dept., Faculty of Oral and Dental Medicine, Cairo University.
Egypt Dent J. 1995 Oct;41(4):1469-78.
The purpose of this study was to analyze the interfacial region between porcelain and base metal alloy using scanning electron microscope with electron microprobe analyzer. Results gave evidence of formation of Nio and Cr2O3 with evidence of more migration of NiO towards the porcelain. Sandblasting of oxidized and fired metal samples (simulating firing of porcelain without its application) showed appearance of crystalline structure of Ni and Cragain, indicating delamination of oxide layer by sandblasting. At porcelain side analysis showed NiO and Cr2O3 and iron oxide plus Si, K, CI, Sn and Cu.
本研究的目的是使用带有电子微探针分析仪的扫描电子显微镜分析陶瓷与贱金属合金之间的界面区域。结果表明形成了NiO和Cr2O3，且有更多的NiO向陶瓷迁移的迹象。对氧化和烧制后的金属样品进行喷砂处理（模拟不施加陶瓷的烧制过程），结果显示再次出现了Ni和Cr的晶体结构，表明喷砂处理导致了氧化层的分层。在陶瓷一侧的分析显示有NiO、Cr2O3以及氧化铁，还有硅、钾、氯、锡和铜。
