Sputter resistant metals/materials

  • Thread starter rppearso
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In summary, the conversation discussed the issue of sputtering in laser tubes and the potential use of ceramics as a shield to prevent it. The person also suggested using a magnet and/or screen grid of tungsten wire to catch ejected ions. They also mentioned the use of ion traps in other industries and provided a link for further information.
  • #1
rppearso
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does anyone know if such a material/metal exists that will resist sputtering under extreme heat and high electrical discharge conditions (such as a 10-30kw laser). I have been reading that sputtering is a huge issue with destroying laser tubes.
 
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  • #2
Protection against back spatter from all types of welding and cutting is usually just done with simple metal shielding .

In more sophisticated applications engineering grade ceramics are commonly used .
 
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  • #3
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  • #4
Hello Nidum,

I have been reading in academic papers that in lasers they have sputter problems on the negative energy side that coats the glass tubes and causes the tubes to short out which makes it so you are constantly replacing tubes (which are not cheap). I was thinking of incorporating a ceramic shield inside the plasma tube to keep the sputter off the glass as opposed to trying to coat the negative lead in some kind of exotic metal which likely will only reduce and not eliminate the sputter anyways (plus add tons of cost to the construction due to complications of trying to plate things like iridium or osmium to an aluminum substrate).

The sputter can also coat your optics which destroys them and creates even more costs and hassle. I was reading that the sputter was only created from the negative terminal so only one side has to be shielded which is good because it would be almost impossible to shield the eye side of the laser.
 
  • #5
You might consider a magnet and/or a screen grid of tungsten wire to allow passage of electrons but to catch ejected ions.
I read somewhere about ion traps for use in CRTs, X-Ray tubes and Electron Microscopes.
Maybe start here; https://en.wikipedia.org/wiki/Ion_trap
 
  • #6
Baluncore said:
You might consider a magnet and/or a screen grid of tungsten wire to allow passage of electrons but to catch ejected ions.
I read somewhere about ion traps for use in CRTs, X-Ray tubes and Electron Microscopes.
Maybe start here; https://en.wikipedia.org/wiki/Ion_trap

That is a very good idea and would be easier to make than baffled glass. Ceramics are still really expensive.
 
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1. What are sputter resistant metals/materials?

Sputter resistant metals/materials are materials that have a high resistance to sputtering, which is the process of atoms being knocked off a surface by high-energy particles. These materials are commonly used in various industries, such as electronics and aerospace, to prevent damage caused by sputtering.

2. How do sputter resistant metals/materials work?

Sputter resistant metals/materials work by having strong bonds between their atoms, making it difficult for high-energy particles to knock them off. They also have a high melting point, so they can withstand the high temperatures generated during sputtering processes.

3. What are the benefits of using sputter resistant metals/materials?

The main benefit of using sputter resistant metals/materials is their ability to protect surfaces from damage caused by sputtering. They also have good durability and stability, making them suitable for long-term use. Additionally, they have excellent electrical and thermal conductivity, as well as resistance to corrosion and oxidation.

4. What are some common sputter resistant metals/materials?

Some common sputter resistant metals/materials include tungsten, titanium, platinum, and gold. These metals have high melting points and strong atomic bonds, making them ideal for sputtering applications. Other materials, such as oxides and nitrides, can also be used as sputter resistant layers.

5. How are sputter resistant metals/materials tested?

Sputter resistant metals/materials are typically tested by subjecting them to high-energy particle bombardment and measuring the amount of material that is sputtered off. The lower the sputtering rate, the more resistant the material is. Other factors, such as surface roughness and chemical composition, can also affect the sputtering resistance of a material.

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