Application of diamond films from CO-H2 plasma to tool blade coating

Saitō, Yukio; Sato, Kouji; Matuda, Shinpei; Koinuma, Hideomi

doi:10.1007/bf01124824

Cited by 36 publications

(2 citation statements)

References 3 publications

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“…Chemical and electrochemical etching of cobalt are widely used to reduce the amount of cobalt at the diamond-insert interface (e.g. Suzuki et al 1986;Saito et al 1991). The reported etching procedures include the use of H 2 O 2 : H 2 SO 4 = 9 : 1 (Park et al 1993), HNO 3 (Nesladek et al 1993) and other solvents.…”

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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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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“…Therefore, substrate pretreatments prior to diamond deposition is necessary to eliminate or reduce that negative effect of cobalt. Chemical etching [10][11][12] , one of the pretreatments, is commonly used in industry due to its simpleness and inexpensiveness. For example, the two-step pretreatment combining two kinds of solutions (KOH:K 3 [Fe(CN) 6 ]:H 2 O and H 2 SO 4 :H 2 O 2 ) can remarkably enhance the adhesion, which has been confirmed by R. Haubner et al [13] and Jinqi Miao et al [14] Nevertheless, the specific information of the pretreatment procedure is not sufficient to establish reasonable processes.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Property and Characterization on Diamond Films Deposited on WC-Co Substrates

Zhou

Yuan

2016

MSF

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Cutting tools of WC-Co are widely used in cutting field. Nevertheless, its wear resistance and lifetime are not qualified for the high performance cutting. Therefore, diamond films are deposited on WC-Co substrates to overcome its disadvantages. In this paper we investigate the effects of the pretreatment on substrates and as-deposited WC-Co samples by using a hot filament chemical vapor deposition (HFCVD) reactor. Prior to deposition, the WC-Co substrates were submitted to surface roughening by Murakami reagent and to surface binder removal by Caro’ acid with varied durations. Surface roughness Ra determined by AFM varied from 110 to 279 nm. The diamond films are characterized by scanning electron microscopy (SEM) and Raman spectroscopy, whose results present a sharp peak at 1336 cm-1 indicating sp3 diamond. The adhesion between the diamond films and substrates was evaluated by pull-off tests with the highest adhesion strength is 26.92 MPa. Cracked interface is characterized between diamond films and substrates, using SEM and energy dispersive spectroscopy (EDS) to analyze the adhesion performance.

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