DEVELOPMENT OF NEXT GENERATION DIAMOND TOOLS BASED ON SUPERHARD MATERIALS WITH NANOMODIFIED BINDER FOR STEEL AND CAST IRON MACHINING
https://doi.org/10.17073/1997-308X-2017-1-64-75
Abstract
The paper demonstrates the possibility of using Next100 type binders alloyed with nickel and modified with WC, ZrO2 and hBN nanoparticles for the manufacture of cutting tools based on superhard materials intended for steel and cast iron machining. It was found that nickel alloying of the binder makes it possible to increase its impact strength by 2,5 times and significantly improve the life of tool segments while in operation. Introduction of WC, ZrO2 and hBN nanoparticles into the binder increases its strength by 100–150 MPa and hardness by 5–7 HRB. In the presence of WC nanoparticles, the adhesion of cubic boron nitride to the binder increases. The optimal ratio of diamond to CBN grains in the coating is determined for better tool performance – 75 : 25. The paper reveals the formation of amorphous boron nanoclusters at the at CBN-binder interface, and dissolution of a small amount of nitrogen in the binder components during hot pressing.
About the Authors
P. A. Loginov
Scientific-educational Centre of SHS of MISIS–ISMAN
Russian Federation
Russian Federation
Cand. Sci. (Tech.), junior researcher of Scientific-educational Centre of SHS of MISIS–ISMAN
D. A. Sidorenko
Scientific-educational Centre of SHS of MISIS–ISMAN
Russian Federation
Russian Federation
Cand. Sci. (Tech.), researcher of Scientific-educational Centre SHS MISIS–ISMAN
E. A. Levashov
Russian Academy of Natural Science,
National University of Science and Technology «MISIS»,
Scientific-educational Centre of SHS MISIS–ISMAN
Russian Federation
Russian Federation
Dr. Sci. (Tech.), prof., acad. of Russian Academy of Natural Science, head of the Department of powder metallurgy and functional coatings of National University of Science and Technology «MISIS», head of Scientific-educational Centre of SHS MISIS–ISMAN
V. A. Andreev
CJSC «Kermet»
Russian Federation
Russian Federation
Cand. Sci. (Phys.-Math.), executive general manager of CJSC «Kermet»
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Review
For citations:
Loginov P.A., Sidorenko D.A., Levashov E.A., Andreev V.A. DEVELOPMENT OF NEXT GENERATION DIAMOND TOOLS BASED ON SUPERHARD MATERIALS WITH NANOMODIFIED BINDER FOR STEEL AND CAST IRON MACHINING. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2017;(1):64-75. (In Russ.) https://doi.org/10.17073/1997-308X-2017-1-64-75
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