出于某种原因，我觉得金和铟的结合非常有趣。这并不奇怪，因为我在阿拉斯加淘金时就得了 "淘金热"，而 "铟热 "则是 "淘金热 "的先决条件。 我的工作.如果没有，那就应该有。
这些元素本身就很有趣，但这些元素最独特的地方可能是金和铟的组合：与大多数金属相比，金和铟本身都非常软，但我所见过的每一种金铟合金都非常硬（我们说的是 "非软性焊料 "的硬......）。这使得金/铟合金极难加工。(稍后详述）
此外，并非金和铟的每种组合都是合金，这些元素也会形成金属间化合物。有关所有组合和由此产生的冶金结构的信息，我建议您查看这张相图和附带的解释。
我的兴趣不仅在于金/铟合金和金属间化合物的特性，这些组合有时也很美观！根据组合的不同，这些材料会呈现出不同的色调。对于一些见多识广的珠宝商和冶金学家来说，"蓝金 "是一种有趣的材料，但由于以下几个因素，蓝金很少被生产出来。1) 大多数珠宝商没有合适的设备和/或冶金背景来加工这种材料。2）它的物理特性更像宝石而非金属，因此很难加工。3) 对于大多数人来说，为了获得轻微的色调而花费大量的金钱和精力是不值得的。
铸造 Au-In 是可能的，这可能是你最好的选择。我戴着一枚铸有 Au/In 的戒指，有时我甚至怀疑蓝色是否清晰可见。
另一种可能的色调是玫瑰色。下图是 82%Au/18%In.同样，这种色调非常微弱，但与铟或大多数其他无色焊料相比，还是很明显的。
金/铟合金还可用于钎焊。金-铟结合可在 200°C 以下形成，并在温度超过 400°C 时才会重新熔化！虽然由于含金量高，这种钎焊材料显然价格昂贵，但对于需要低加工温度、高强度和高加工过程中耐温性的应用来说，它还是非常有趣的。在某些应用中，这种合金物有所值。
Since we are discussing brazes, I should also mention a resource for anyone out there looking for more information than I can provide on the topic: Bernard Leavitt is a Product Specialist for High-Temperature Applications at Indium Corporation. (“High-Temperature” is relative to a solder company, this term includes low-temperature brazes.) By the way, Bernie has a blog and can be contacted directly for more braze information at [email protected].
I have brought all this Au/In information up today for a good reason. In the past, gold-indium alloys have been quite brittle, which means they were difficult to form into parts, package, and ship without cracking. As long as I have been interested in these alloys, they always seemed like something I shouldn’t mention, because they were so difficult to manufacture. So, what has changed? Well, for most solder/braze suppliers nothing has changed, many companies have no desire in offering these unique alloys – and those who do face the same struggles we have in the past. Indium Corporation has recently made breakthroughs in processing gold-indium alloys, so I am no longer holding off discussing these materials with you. We offer an amazing 82%Au/18%In alloy in a variety of ribbon and preform sizes, andI hope you don’t hold off contacting me to discuss your next Au/In application.
~吉姆
