Hello,

I am getting good magnetic properties of magnetic fluid. I am studying it's tribology properties using four ball tester and it shows good antifriction and antiwear properties.

I would like to ask you that what do you mean by your smaller metallic particles? And how are you doing magnetic measurements?

Best regards,

Kinjal Trivedi

Hello,

I used two kind of carbonyl Fe powders: nanoparticles (4-10 nm diameter size) and micro (4-6 um diameter size). The more size of the particles the better magnetic effect.  To obtain good result of magnetic result as a magnetic fluid I had to get over 50% Fe particles (v/v). I've checked the magnetic effect on special rheometer with magnetic attachement that is prefer to magnetic fluids.

I've checked the tribological properties of my fluids on 3 tribotesters. Of course I also obtained the best results on 4ball tester, but it also depends on test conditions.

Do you use any special metallic particles or additives?

Regards

Emil Nowiński

Hello,

Ya it's true, that test condition effect. 

No, I am not using any special  metallic particles or additives.

Regards

Kinjal Trivedi