I want to use it in positive displacement pump rotating at 10000 RPM. Magnetic coupling will be used for torque transfer hence pump shaft and other components should be non magnetic and wear resistant...
Shailendra Verma , The materials you can use are cobalt base superalloy, tungsten-rhenium W 50Re alloy.
It is easier and better to divide the task into two parts: non-magnetic shaft base material with high strength and a hard, wear-resistant coating. If you divide the task in this way, then the choice of materials increases significantly. For example, many austenitic (non-magnetic) stainless steels and titanium alloys are suitable for a shaft, and for a wear-resistant surface: hard chromium, heat-treated nickel-phosphorus, coatings based on chromium or tungsten carbides, deposited by thermal spraying, thin superhard PVD coatings, nitrided steel surfaces, etc.
I agree with Vadim Verlotski, which will depend on your Shailendra Verma design. If it allows them to complement each other in several parts, it would be a good strategy, when crossing my database of materials with the requirements that you requested, I only throw the materials that you indicate and 3 that I discard because of the complexity of acquiring it. Maybe if it could be done in two stages and both are compatible through a system of union with the requirements you mention, yes, it would be a little easier.
Thank you Angelo Oñate and Vadim Verlotski for your suggestions. I will explore the option of hard materials as well as wear resistant coatings...
Dear Shailendra Verma ,
I assume that the requirement of hardness is to minimize the wear loss. if that is the case I would suggest using non-magnetic stainless steel and coat the same with WC by the HVOF method. WC-HVOF is a popular choice to mitigate wear in the pumping industry.
I have developed a few novel coatings that can increase surface hardness to 2000 HV (or 76 Rc +) that can perform 3.5 times better than tungsten carbide coatings.
Best regards,
SCA
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