Factors influencing the adhesion of diamond coatings on cutting tools

Söderberg, Staffan; Gerendas, A.; Sjöstrand, M.E.

doi:10.1016/0042-207x(90)93945-f

Cited by 67 publications

(6 citation statements)

References 2 publications

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“…Predecarburization of a hot-pressed Co-free WC substrate before diamond deposition, which recrystallizes the WC grains, greatly enhanced the adhesion strength [3]. Finally, the use of an Si3N 4 substrate excluded the effect of the Co-rich binder phase and was also very helpful in reducing the thermal stress, because the thermal expansion coefficient of Si3N 4 is close to that of diamond [8]. All these treatments have been applied to reduce the adverse effects of the Co-rich binder phase on diamond nucleation and growth.…”

Section: Int?oductionmentioning

confidence: 89%

“…One problem with using a WC-Co substrate is that a Corich binder phase interacts with the deposited diamond during deposition. The Co-rich binder phase can suppress diamond nucleation and a graphite-like carbon film can deposit on the Co-rich binder phase instead of the diamond film [7,8]. Another problem is the large thermal expansion coefficient difference between the WC-Co substrate and the diamond layer, which can induce a large thermal stress at the interface.…”

Section: Int?oductionmentioning

confidence: 99%

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Behaviour of Co binder phase during diamond deposition on WCCo substrate

Park

Baik

Lee

et al. 1993

Diamond and Related Materials

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The movement of the Co-rich binder phase and its interaction with growing diamond particles during deposition were investigated by repeated observations of the same site on a WC-Co substrate surface. Both etched and unetched (as-polished) specimens of WC 5Co were used for deposition. The diamond deposition was carried out using the tungsten filament chemical vapour deposition method. Raman spectra have shown that the quality of the diamond deposited on the etched substrate was better than that on the as-polished substrate. The facet size of the diamond film surface on the as-polished substrate was smaller than that on the etched specimen. These effects were caused by the atomic-scale interaction of Co atoms in the binder phase. A special feature of the diamond film on the as-polished specimen was a very rough diamond film surface. This phenomenon was observed to result from the abnormal movement of the Co-rich binder phase to the deposited diamond particle surface and the subsequent non-uniform growth of particles during deposition. The phenomenological characteristics of the Co-rich binder phase movement were also explained.

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Section: Int?oductionmentioning

confidence: 89%

Section: Int?oductionmentioning

confidence: 99%

Behaviour of Co binder phase during diamond deposition on WCCo substrate

Park

Baik

Lee

et al. 1993

Diamond and Related Materials

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“…[ 94 ] These parameters affect later film thickness, grain size, homogeneity, morphology, defects, adhesion, and surface roughness of the deposited diamond films. [ 95–97 ]…”

Section: Synthesis Of Ultrathin Diamond Coatingsmentioning

confidence: 99%

Ultrathin Diamond Nanofilms—Development, Challenges, and Applications

Handschuh‐Wang

Wang

Tang

2021

Small

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Diamond is a highly attractive material for ample applications in material science, engineering, chemistry, and biology because of its favorable properties. The advent of conductive diamond coatings and the steady demand for miniaturization in a plethora of economic and scientific fields resulted in the impetus for interdisciplinary research to develop intricate deposition techniques for thin (≤1000 nm) and ultra‐thin (≤100 nm) diamond films on non‐diamond substrates. By virtue of the lowered thickness, diamond coatings feature high optical transparency in UV–IR range. Combined with their semi‐conductivity and mechanical robustness, they are promising candidates for solar cells, optical devices, transparent electrodes, and photochemical applications. In this review, the difficulty of (ultra‐thin) diamond film development and production, introduction of important stepping stones for thin diamond synthesis, and summarization of the main nucleation procedures for diamond film synthesis are elucidated. Thereafter, applications of thin diamond coatings are highlighted with a focus on applications relying on ultrathin diamond coatings, and the excellent properties of the diamond exploited in said applications are discussed, thus guiding the reader and enabling the reader to quickly get acquainted with the research field of ultrathin diamond coatings.

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“…The presence of cobalt is harmful to diamond deposition on WC-Co tools (McCune et al 1989;Soderberg 1990). The cobalt binder suppresses the diamond nucleation and accelerates the formation of graphite instead (Murukawa et al 1988;Soderberg 1990). The amount of cobalt in the carbide substrate also adversely affects the "Raman quality", the facet size and the roughness of a diamond film (Park et al 1993).…”

Section: The Diamond-carbide Interfacementioning

confidence: 99%

A comparative machining study of diamond-coated tools made by plasma torch, microwave, and hot filament techniques

Bauer

Inspektor

Oles

2003

Sadhana

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An effective metal-cutting tool is usually a combination of a hard coating and a tough substrate. The successful deposition of diamond outside its thermodynamic stability range has stimulated the development of a new class of cutting tools: those with diamond-coated inserts of any desired style and edge geometry. The successful implementation of diamond coatings also expedited similar research in the deposition of cubic boron nitride. This paper presents superhard coating tools, with emphasis on diamond-coated WC-Co tools, the corresponding deposition of technologies and the foreseen metal-cutting applications.

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Factors influencing the adhesion of diamond coatings on cutting tools

Cited by 67 publications

References 2 publications

Behaviour of Co binder phase during diamond deposition on WCCo substrate

Behaviour of Co binder phase during diamond deposition on WCCo substrate

Ultrathin Diamond Nanofilms—Development, Challenges, and Applications

A comparative machining study of diamond-coated tools made by plasma torch, microwave, and hot filament techniques

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