Coating hardness
Coating hardness
(OP)
Hello:
We have a coating on an Aluminum substrate that we need to know the hardness of. What are the recommended techniques and the required coating thicknesses to evaluate the hardness of only the coating. At this point, I don't know what the coating is but, it may be anodized.
Thank you and have a great day.
Steve DeLucia
We have a coating on an Aluminum substrate that we need to know the hardness of. What are the recommended techniques and the required coating thicknesses to evaluate the hardness of only the coating. At this point, I don't know what the coating is but, it may be anodized.
Thank you and have a great day.
Steve DeLucia
RE: Coating hardness
RE: Coating hardness
RE: Coating hardness
RE: Coating hardness
thanks for the information, I appreciate it.
steved
RE: Coating hardness
Ok, putting my awe and wonderment aside, chiaraP's suggestion to investigate micro or nanohardness indentation is a good one. Anodic coatings can be quite thick (greater than 10 micrometers), and therefore appropriate for microhardness testing. We routinely use Vickers hardness with a 0.05 kg (50 g) indentation load to measure the hardness of chromium electroplating ( ~ 900 HV at 15-20 micrometer thickness). Vickers microhardness can be done with loads as low as 1 g.
RE: Coating hardness
Steved
RE: Coating hardness
RE: Coating hardness
Thank you for the reply, I will pass teh nformation on.
Steved