Al-Ni, Ni-Ga, Al-Ga此三個二元系統已被人們研究了數十年，相關的相平衡研究及二元熱力學參數已經過多年的研究並有著非常深入的理解，但當我們提到Al-Ga-Ni三元系統，目前文獻中對於此三元系統並不是非常理解，而我們知道在此三元系統中有非常多可能生成之固溶相化合物如: Ni2(Al,Ga)3,Ni(Al,Ga),Ni5(Al,Ga)3, Ni3(Al,Ga) 等等，而此三元系統化合物在應用端的使用也是非常多元且非常重要的，非常值得我們深入探討及釐清其關於相平衡關係的基礎學理研究。
此篇研究著重於釐清Al-Ga-Ni三元系統的基礎學理關係，包含不同溫度下的三元相關係、相邊界位置及各元素在各合金相中的溶解度，實驗方法的部分我們使用相圖計算軟體、相平衡實驗及機械性質檢測等等方法，首先利用文獻或數據庫中的二元熱力學參數做出高可靠度的Al-Ga-Ni三元系統計算相圖，接著選出適當的關鍵點(critical point)，利用電弧融煉系統製備將高純度的Al,Ga和Ni金屬熔成高均質化的三元合金，並做長時間的熱處理，做出多個不同溫度的Al-Ni-Ga三元相圖及高Ga含量的Ni/Al合金機械性質檢測，並可根據本文所提出的相邊界數據進一步優化此三元系統的計算相圖精確度及可靠度。此研究可以讓人們對於Al-Ni-Ga三元系統更加理解，而此基礎學理研究更代表此系統的應用端非常多元、廣泛，任何包含此三元系統的研究課題都能夠應用。

The three binary systems of Al-Ni, Ni-Ga, and Al-Ga have been studied for decades. The related phase equilibrium research and binary thermodynamic parameters have been studied for many years and have a very in-depth understanding. But when we mention the Al-Ga-Ni ternary system, the current literature does not understand this ternary system very well. We know that there are many solid solution phase compounds that may be generated in this ternary system, such as: Ni2(Al ,Ga)3 ,Ni(Al,Ga), Ni5(Al,Ga)3, Ni3(Al,Ga) and so on, and the use of this ternary system compound on the application side is also very diverse and very important, and it is very worthy for us In-depth discussion and clarification of its basic scientific research on the phase equilibrium relationship.
This research focuses on clarifying the basic theoretical relationships of the Al-Ga-Ni ternary system, including the ternary phase relationship at different temperatures, phase boundaries, and the solubility of each element in each ternary alloy phase. For the experimental method, we use phase diagrams calculation software, phase equilibrium experiment and mechanical property detection method, first use the binary thermodynamic parameters in the literature or database to make a highly reliable phase diagram model of Al-Ga-Ni ternary system, and then select the appropriate critical point, Use high-purity Al, Ga and Ni metals to prepare ternary alloys using an arc melting system and do long-term heat treatment to make multiple Al-Ni-Ga ternary phase diagrams at different temperatures, and the mechanical properties of Ni/Al alloys with high Ga content are also reported in this study. The phase boundary data proposed in this work can be used to further optimize the accuracy and reliability of the calculated phase diagram of this ternary system model. This research can make people better understand the Al-Ni-Ga ternary system. Fundamental scientific research also represents that the application side of this system is very diverse and extensive, any research topic that includes this ternary system can be applied.

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