[Adam-2020 (OP)]

Hi. We all familiar with popular yotube videos of people maming theermite and they all use aluminum powder with some metal oxide. My questiion is is there any other metals can be used in thermite other than aluminum powderer? Can some peoiple mention coule metal powders

[Kryptid]

Magnesium will work in place of aluminum, as will titanium and zinc. The metalloids boron and silicon work too:

https://en.wikipedia.org/wiki/Thermite

What you are looking for is an element that produces a more stable oxide than iron does (or copper, or lead, or whatever metal oxide you are using). This way, when the oxygen in the iron oxide transfers to the new metal fuel, the process will be exothermic (energy-releasing).

[Adam-2020 (OP)]

Which composition can be ignited easily if the ingridients are coarse powders

[Kryptid]

A match and some sulfur powder seem to be good enough materials to ignite thermite:

[evan_au]

The reaction will proceed more rapidly if the solid components are milled to a very fine powder, and mixed very thoroughly.
- When the ingredients are coarse powders, iron oxide is mostly adjacent to iron oxide (which doesn't react), and aluminium metal is mostly next to aluminium metal (which doesn't react).
- Naturally, the mixing must be done very gently, so you don't set off the reaction prematurely...

[alancalverd]

You could mix your powders as a suspension in an evaporable solvent and let the mixture dry to a solid. It's a fairly safe way of making solid rocket fuel and might work for thermite.

[paul cotter]

Take care if using magnesium instead of aluminium as such mixtures, if sufficiently fine and intimately mixed, can explode violently. Some aluminium/oxide mixes can also explode, fine aluminium with fine copper(2) oxide explodes violently.