Influence of Tin on the Structure and Hardness of Metallic Binders of Diamond Tools Fabricated by Composition Soldering
https://doi.org/10.17073/1997-308X-2015-3-62-67
Abstract
The influence of the tin content on the structure and hardness of the Sn–Cu–Co and Sn–Cu–Co–W alloys, which are applied as bonds of diamond-abrasive tools, is investigated. Bonds were prepared by the compositional brazing: powder components were mixed with organic bond and deposited on a steel base. Sintering was performed at 820–1100 °C. The structure of metallic binders was investigated by the X-ray diffraction and electron probe microanalyses. In addition, microhardness of structural components and macrohardness of bonds were measured. It is established that the hardness of tin bonds linearly increases as the tin content increases due to an increase in amount of solid intermetallic phases in their structure. The optimal tin content, which provides high hardness (96–98 HRB) and absence of low-melting high-tin intermetallic compounds in the bond structure, is determined for the Sn–Cu–Co–W bonds.
About the Author
E. G. Sokolov
Кубанский государственный технологический университет (КубГТУ), г. Краснодар
Russian Federation
Russian Federation
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Review
For citations:
Sokolov E.G. Influence of Tin on the Structure and Hardness of Metallic Binders of Diamond Tools Fabricated by Composition Soldering. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2015;(3):62-67. (In Russ.) https://doi.org/10.17073/1997-308X-2015-3-62-67
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