Prospects for Using Superhard Materials and Wear-Resistant Alloys for Rock-Breaking Tools


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Abstract

General information on hardfacing materials and steels for rock-breaking tools is presented. Some problems of the cost-effectiveness and resistance of sintered cermet hard alloys are discussed. It is shown that expensive wear-resistant alloys can be replaced by cost-effectively alloyed white iron with enhanced mechanical properties, hardness, wear-resistance, and shock-resistance achieved by treating the melt with nitrogen and increasing the carbon content. Possible ways to improve cermet sintered alloys by heat and chemical-heat treatment are briefly discussed.

About the authors

S. M. Nikitenko

Coal Institute, Siberian Branch of the Russian Academy of Sciences (IU SO RAN)

Author for correspondence.
Email: nsm.nis@mail.ru
Russian Federation, Kemerovo

A. V. Kol’ba

Coal Institute, Siberian Branch of the Russian Academy of Sciences (IU SO RAN)

Email: nsm.nis@mail.ru
Russian Federation, Kemerovo

A. S. Anokhin

A. A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences (IMET RAN)

Email: nsm.nis@mail.ru
Russian Federation, Moscow

E. V. Kukueva

Mikrobor Kompozit JSC; M. V. Lomonosov Moscow State University

Email: nsm.nis@mail.ru
Russian Federation, Moscow; Moscow

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