Nakajima H, Akaiwa Y, Hashimoto H, Ferracane J L, Okabe T
Department of Biomaterials Science, Baylor College of Dentistry-Texas A&M University System, Dallas.
J Dent Res. 1997 Jan;76(1):610-6. doi: 10.1177/00220345970760011301.
When amalgam was triturated with Hg-In liquid alloys instead of pure mercury, the resultant amalgams released a significantly smaller amount of mercury vapor during setting. To understand the mechanisms responsible for the drastic decrease in mercury evaporation from the In-containing amalgam, we used Auger Electron Spectroscopy to examine surface oxide films on amalgams made with Hg-10 wt% In or pure mercury. The surface of the In-containing amalgam was rapidly covered with both indium and tin oxide films. Greater amounts of oxygen were found on the gamma 1 Ag-Hg matrix in the In-containing amalgam than in the amalgam without indium. The rapid formation of the oxide film contributes to a reduction in the mercury release from the In-containing amalgam by forming an effective barrier to evaporation.
当用汞铟液态合金而非纯汞研磨汞合金时，所得汞合金在凝固过程中释放的汞蒸气量显著减少。为了解含铟汞合金汞蒸发急剧减少的机制，我们使用俄歇电子能谱来检查由汞 - 10 wt%铟或纯汞制成的汞合金表面氧化膜。含铟汞合金的表面迅速覆盖有铟和氧化锡膜。在含铟汞合金的γ1 Ag - Hg基体中发现的氧量比不含铟的汞合金中更多。氧化膜的快速形成通过形成有效的蒸发屏障，有助于减少含铟汞合金中的汞释放。
