Investigation of the Al-Ge-Ni phase diagram
👓 Reichmann Thomas![](https://cdn1.ozone.ru/s3/multimedia-m/6000933898.jpg)
Investigation of the Al-Ge-Ni phase diagram
✅ Nickel aluminides, like γ-Ni3️⃣Al and ➕ β-NiAl, are nowadays used in terms of nickel-base superalloys. Due to their excellent properties at high temperatures, they are applied in aircraft engines 👨🔬 and ➕ power generating turbines, were materials are subjected to elevated temperatures and ➕ mechanical 👨🔧 stresses. Since applied parts of nickel-base superalloys are moulded in complicated procedures at elevated temperatures, they are very ❗️ expensive. A successful application of these materials thus requires suitable and ➕ cost-effective joining techniques, e.g. transient liquid phase bonding (TLP). As it is a brazing method, one 1️⃣ has to determine a solder material which has a definitely lower melting point 👈️ than the joining parts. In the present 🎁 work ⚙️, germanium has been chosen, as melting point 👈️ depressing element, as it forms deep eutectics with Al and ➕ Ni. The aim of the present 🎁 work ⚙️ was to investigate the ternary phase diagram Al-Ge-Ni, in order to optimize the filler composition and ➕ to better understand the interface reactions occurring during the brazing process.
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