Espevik S, Oilo G, Lodding A
Acta Odontol Scand. 1979;37(6):323-8. doi: 10.3109/00016357909004703.
It has been found that oxide-forming elements in the alloy are important for the blood strength between the metal and the procelain. The purpose of the present investigation was to study the formation of oxides during pretreatment and firing of porcelain. Four commerically available Ceramo-Metal alloys were studied. The specimens were heated at 980 degrees C for five hours in air, and the weight was continuously recorded. In addition porcelain was fired on to the alloys. Metallographic examinations were conducted on both oxidized and fired speciments. The weight gain data also indicated an increased oxygen uptake with a larger amount of oxidizable elements in the alloy. Most of the oxygen gain and time indicated that the oxygen uptake was diffusion controlled. The weight gain data also indicated an increased oxygen uptake with larger amount of oxidizable elements in the alloy. Most of the oxygen in the oxidize alloys was located as oxide along grain boundaries in the metal.
已经发现合金中的成氧化物元素对于金属与瓷之间的结合强度很重要。本研究的目的是研究瓷预处理和烧制过程中氧化物的形成。研究了四种市售的金属陶瓷合金。将试样在空气中980℃加热5小时，并连续记录重量。此外，将瓷烧制到合金上。对氧化和烧制后的试样进行金相检查。重量增加数据还表明，合金中可氧化元素含量越高，氧吸收量增加。大部分氧吸收量和时间表明氧吸收是由扩散控制的。重量增加数据还表明，合金中可氧化元素含量越高，氧吸收量增加。氧化合金中的大部分氧以氧化物形式位于金属的晶界处。
