汞齊合金主要是以銀、銅與錫之合金粉末與汞混合而成的合金，有時也會添加少量金屬（如鋅、銦、鈀等）以改善其性質。在汞齊合金中添加微量的鈀，可改善汞齊合金的汞釋出率、機械性質、抗腐蝕性與抗潛變性。
本實驗選用自行配料，由美國HJE公司協助噴粉之AP3合金粉末，經過T1℃、T2℃、T3℃、T4℃、T5℃、T6℃，持溫兩天之熱處理，進行各項性質測試。本實驗目的在於：討論熱處理對AP3汞齊合金之影響與差異，選用AP3最佳之熱處理條件與不含鈀之球型AP0粉末混成MixP1及MixP2之雙成份汞齊合金，並與單成份汞齊合金AP1T5及AP2T5作比較，以設計出低汞蒸氣釋出率、操作性質、機械性質良好之汞齊合金為目的。
結果發現，AP3合金粉末在熱處理T3℃時有最佳之性質，添加適當的AP0合金粉末製成雙成份汞齊合金時，可以降低其汞釋出率及提升1小時之抗壓強度。選擇本實驗最佳之材料進行冷熱循環實驗，MixP1及MixP2仍保有良好的機械性質，且經細胞毒性測試後，本實驗所使用之汞齊合金皆不會對細胞造成毒性傷害。

Amalgam was mixed with mercury by the silver, copper and the tin powder. It’s properties can be improved by adding few metals like zinc, indium and palladium . Adding few palladium in amalgam can impove the amalgam’s mercury vapor release rate, mechanical properties, corrosion resistance and creep resistance.
This experiment selects voluntarily the ingredient AP3 which was powdered by way of American HJE Corporation, and then passes through T1℃,T2℃, T3℃, T4℃, T5℃, T6℃, hold the warm two days of heat treatments, and carries on each test. This experiment’s goal was focused on the influence of heat treatment on AP3 spherical amalgam , selects and mixs the AP3 power and AP0 powder of best heat treatment condition to make the double ingredient amalgam MixP1 and MixP2, and compared with the single ingredient amalgam AP1T5 and AP2T5. It’s the goal to design the amalgam which have low mercury vapor release rate, good operation and mechanical properties.
The result discovered that AP3 amalgam when it passed through T3℃ heat treatment has the best property, double ingredient amalgam may reduce its mercury release rate and have better 1 hour compressive strength when adding the suitable AP0 powder. It holds the good mechanical property while choosing the experiment’s best material MixP1 and MixP2 to carry on the thermal cycling test. After cytotoxicity test, all amalgam of this experiment will not cause the toxic damage to the cell.

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