Besides painting it, what is the best way to make a stainless steel plate black to radiation between 8 um and 12 um? I am interested of looking at it with an infrared camera to detect its temperature.
What kind of Stainless steels are you studying? I mean martensitic/ ferritic or austenitic SS?
Apart from painting:
1) Surface coating : Like carburizing
2) You can look at heating SS above solidus (red hot) and then sudden quenching in suitable media. This is seen in household utensils made of stainless steel which get blackened when cold water is splashed across the overheated red-hot portion (Especially when the cook forgets that he/she has placed a broth on the flame and comes back to find the broth evaporated and the utensil overheated).
Thanks for your help.
I am using AISI 304, but I cannot heat it up and quench it because I am dealing with a 40 microns thick plate that has not to be distorted as it can happen with heating and quenching.
I was thinking of some sort of chemical treatment.
Regards
Thanks for the suggestion even if not very easy to accomplish.
Regards
If I am correct carbon black is the main part of the paint that absorbs these wave lengths. So you could just use the carbon black and rub it on. It may be not quite as good because the film structure (thickness, refraction, particle distribution) is different. And of course it will have to be handled with care as long as you want to measure. You could also prepare a suspension yourself. If you need more information the people at http://www.mankiewicz.com/english/company/ are currently still the suppliers of the "standard black body paint" if I am not mistaken. Perhaps they have a formulation with a compatible resin as well?
Dear Giovanni Sir,
Currently, we are working on the measurement of coating thickness using infrared thermography. Since we have a white color zirconia thermal barrier coatings and it has strong reflection effect, we have plan to use black paint . Previously we have used KRYLON black paint for the flat bottom hole specimen. But in case of coating , we think that the use of black paint will affect in the thickness of coating. So some of the researcher suggest to use the water-soluble black ink. Will it really help to improve the emissivity? If so, can you please recommend us some name of the water soluable black ink /paint which help to increase the emissivity? If not what could be the other alternatives?
Hoping to hear you soon.
Regards,
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