Dear All,
What may be the possible reasons to decrease in mass loss and wear rate with rise in load and temperature successively at a constant speed.
Thank you.
Hello Shailesh Kumar Singh
As per my knowledge I am trying to respond for your query
Here at higher load conditions, the change of phase takes place and the material becomes more ductile, so wear particles get adhered to the surface and leads to less wear rate. The wear particles get adhered to the surface and a layer is formed called smeared layer. Further there is sudden increase in wear rate due to normalization at higher loads. Moreover, the increase in temperature also increases the ductility. Bascially, in general the friction coefficient decreases as both temperature and load increases because of the formation of oxide layers. All these mentioned reasons depends on many factors though, each set of factors have their own reason for weight loss and wear rate. Hope this will bw helpful for you
Good luck
PVR
Sir,
can you specify material?
mode of wear?
conductivity of your sample?
Hi dear Shailesh,
It depends on different factor. as you know sliding wear has two part one of them is your studied sample and another is yours counterpart. In my studies (on magnesium alloys) transition magnesium oxide to the surface of counter face caused reduction of effect of steel counter face hardness at high temperature. So this reduction in wear rate could attribute to this transition layer.
At higher load formation of thick and durable tribolayer that could contain oxide of your sample or your counterpart. you should evaluate your wear both examined surfaces.
Good luck.
Material is CrN chromium nitride coating by PVD dear Bhaskar Bhatt
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