Combined Effect of CrB 2 Micropowder and VN Nanopowder on the Strength and Wear Re-sistance of Fe‒Cu–Ni–Sn Matrix Diamond Composites oleh Boranbay Ratov, Volodymyr Mechnik, Miroslaw Rucki, Edwin Gevorkyan, Arturas Kilikevicius, Vasyl Kolodnitskyi, Zbigniew Siemiatkowski, Gulzada Umirova, Leszek Chalko, Jerzy Jozwik, Arailym Zhanggirkhanova, Volodymyr Chishkala, Dmytro Korostyshevskyi