Lewis A J
Aust Dent J. 1977 Jun;22(3):208-11. doi: 10.1111/j.1834-7819.1977.tb04491.x.
Two types of specimens were cast from a variety of pure metals and alloys. A unidirectional solidification system was used for the production of the first, whilst a deliberate feeding problem was incorporated in the production of the second. The specimens were subjected to radiographic and metallographic evaluation in conjunction with porosity determinations, in order to ascertain how the amount and pattern of porosity varied with alloy complexity and alloy composition.
从多种纯金属和合金中浇铸出了两种类型的试样。第一种试样的生产采用单向凝固系统，而第二种试样的生产中特意设置了补缩问题。对这些试样进行了射线照相和金相评估，并测定了孔隙率，以确定孔隙率的数量和形态如何随合金复杂性和合金成分而变化。
