Why is the density of 90 tungsten nickel copper plate uneven?
Problem: Insufficient pressing or sintering during powder metallurgy may result in the presence of pores inside the sheet, reducing the actual density (affecting the radiation shielding effect).
Solution: Optimize sintering process (such as high-temperature liquid-phase sintering), or use hot isostatic pressing (HIP) treatment to eliminate pores.
Why is there a problem of insufficient mechanical performance?
Problem: The hard and brittle nature may lead to poor impact resistance, especially cracking in low-temperature environments.
Solution: Adjust the nickel copper ratio (such as increasing nickel content to improve toughness), or improve plasticity through heat treatment.