- #1
lancashire liuyu
- 5
- 0
when i was using Scanning Electron Microscope to investigate fracture surface of a metal sample,the results of composition of it appeared so different to what the composition should be, that sample contains 2% carbon comparing to normally 0.1%. i thought there are 3 ways of doing that:
1.hand--i need to use my hand to handle the operation during the process.
scurf and sweat may pollute the sample surface.
2.Enviroment--instrument;air with high content of carbon dioxide;
residual grease.
3.Chemical reaction--with all possible source.
what is the major reason of that happened? any possibility else?
it's about my project,thank you!
1.hand--i need to use my hand to handle the operation during the process.
scurf and sweat may pollute the sample surface.
2.Enviroment--instrument;air with high content of carbon dioxide;
residual grease.
3.Chemical reaction--with all possible source.
what is the major reason of that happened? any possibility else?
it's about my project,thank you!