Ahmadreza Shafieyan

5 Questions 5 Answers 0 Followers

Questions related from Ahmadreza Shafieyan

Which element are used commercially for coating on Metal Coated dispenser cathodes?

In the M-type W dispenser cathode a metal will be coated on the surface of tungsten pellets same as Rhenium, Iridium, Osmium and ... . I want to know which element or alloy is used in the...

12 May 2021 128 4 View

How to deposit Ruthenium by PVD method ?

hello everyone, in my recent project i want to deposit tungsten by thin film of ruthenium by PVD method, as increasing temperature to melt ruthenium, part of it evaporate and deposit and another...

12 May 2021 872 4 View

How can i take XRD from my samples?(They are in a state of aqueous solution)?

I'm trying to take XRD test from my samplesMaterials are prepared in solution formWhat is the fastest and best method for drying samples and taking XRD from them?(samples do not have high...

19 November 2016 2,107 6 View

Different between optical and electrical bandgap

Hi everyone what is different between optical and electrical bandgap is there a relation between them ? can introduce me some book about it ?

01 January 1970 4,920 3 View

How Can I determine Concentration of a solution?

is any instrument that determine concentration of solution without reference solution? I have problem measure the mass of my product and can not determine concentration of solution

01 January 1970 5,488 2 View