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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2016

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The comparison of the sintering methods for diamond cutting tools

100%

Bulut B. , Tazegul O. , Baydogan M. , Kayali E. S.

tom Vol. 76, nr 1

30--35

Purpose: Aim of this study is to compare mechanical, physical, microstructural properties of diamond cutting tools (DCTs) made of Co-Ni-Cu-Sn matrix, produced by Spark Plasma Sintering (SPS) and Conventional Sintering (CS) methods. The main reason for this research is choosing the most convenient and economically manufacturing method for diamond cutting tools. Design/methodology/approach: Aim of this study is to compare mechanical, physical, microstructural properties of diamond cutting tools (DCTs) made of Co-Ni-Cu-Sn matrix, produced by Spark Plasma Sintering (SPS) and Conventional Sintering (CS) methods. The main reason for this research is choosing the most convenient and economically manufacturing method for diamond cutting tools. Findings: The results showed that, the density values of the samples which are produced two different sintering methods are similar. However, the mechanical and microstructure properties of the samples which are produced by SPS method are decent. The robust mechanical properties were obtained at SPS method than CS method. Practical implications: Powder metallurgy is the most common method because of forming new diamond grains due to wearing of matrix. In powder metallurgy, Conventional Sintering (CS) and Spark Plasma Sintering (SPS) are used at DCTs production prevalently. SPS is a short and effective way to produce diamond tools but costs are higher and production capacity is lower than conventional sintering method. Originality/value: This paper demonstrates that the sintering methods can effect the cutting performances of the DCTs. The samples which are produced with CS method had elevated cutting performance on-site field tests.