Sintering behavior and properties of diamond/cemented carbides

Moriguchi, Hideki; Tsuduki, Katsunori; Ikegaya, Akihiko; Miyamoto, Yoshinari; Morisada, Yoshiaki

doi:10.1016/j.ijrmhm.2006.05.006

Cited by 46 publications

(24 citation statements)

References 9 publications

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“…The diffractogram after the sintering process shows the absence of peak Ni element, this can be attributed to the formation of compounds Ni4Sn, CuNi and CuNi2Sn [4]. According to Moriguchia Tsuduki [3] and peak of Cu is reduced when the sintering temperature increases, since there formation of higher amounts of solid solutions of Cu-Sn. In relation to the CRB2, there was no chemical reaction with the other elements, it can be observed with WC and Fe elements They continued with the solid phase inside the liquid matrix of Cu, Ni and Sn.…”

Section: Methodsmentioning

confidence: 95%

“…By the increasing use of ornamental rocks , mainly in construction, several problems have been identified in relation to rocks cutting, especially in terms of efficiency and cost cutting process. In recent years various types of metal molds have been developed to solve these problems [3]. The objective of this work is to develop a new alloy (adding CRB2 in place of Co) which will be used for application in industrial saws used in cutting granite and stone wood north-northwest of the Rio de Janeiro state.…”

Section: Introductionmentioning

confidence: 99%

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ADDITION EFFECT OF CrB2 ON THE DIAMOND COMPOSITE PROPERTIES OF OBTAINED IN THE Fe-Cu-Ni-Sn SYSTEM

Almeida¹,

Skury²,

Monteiro³

2018

ABM Proceedings

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With the increasing use of ornamental rocks, mainly in civil construction, sundry problems were identified in relation to rocks cutting, such as efficiency in the cutting process and rock quality lumber. In recent years several composites have been developed to solve these problems. In this context, the study of the binomial matrix metal-diamond interaction is of paramount importance for the development of new composite materials to improve the efficiency of the cutting tool. The diamond impregnated matrix metal often reveals a reaction between the diamond surface and the matrix. Besides the mechanical connection, chemical reactions can sometimes occur. Therefore, this study aims to assess the achievement of diamond composites in the system Fe / Cu / Ni / Sn via powder metallurgy, with added CRB2. Analyzes have been performed to characterize chemical / physical and mechanical. The results have showed that addition of CRB2 promote significant changes in the properties of composites, especially in wear resistance and fracture toughness. Furthermore, the presence of the composite CRB2 causes a significant improvement in thermal stability.

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Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

ADDITION EFFECT OF CrB2 ON THE DIAMOND COMPOSITE PROPERTIES OF OBTAINED IN THE Fe-Cu-Ni-Sn SYSTEM

Almeida¹,

Skury²,

Monteiro³

2018

ABM Proceedings

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“…47) Moriguchi et al fabricated SiCcoated diamond powder using vapor phase reactions with SiO powder and carbon felts. 48) They argued that the combination of SiC coating on diamond powders and rapid sintering was effective to prevent the graphitization of diamond with molten binder during sintering. However, the hardness of these diamond composites with cemented carbides by SPS was comparable to those of common hard ceramic materials, because diamond fractions in the composites were less than 50 vol %.…”

Section: )46)mentioning

confidence: 99%

Coatings on ceramic powders by rotary chemical vapor deposition and sintering of the coated powders

Katsui

Goto

2018

J. Ceram. Soc. Japan

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Rotary chemical vapor deposition (CVD) is a non-line-of-sight-deposition process with excellent coverage and a versatile technique to modify surfaces of ceramic powders. In this paper, potential applications of rotary CVD for coatings on powders are presented; highly dispersive catalytic nanoparticles can be deposited on support powders, while the conformal thin layers can be coated uniformly on particulates, which are advantageous in powder metallurgy for the preparation of sintered bulk materials. Particularly, this paper focuses on the deposition of silicon carbide (SiC) layers on silica (SiO 2 ) and diamond particles using the rotary CVD technique; the resultant core/shell powders are readily sintered using spark plasma sintering at moderate temperatures and pressures. The CVD-SiC layers formed on powders prevent grain growth and act as protective layers against reactions and phase transformations at the sintering temperatures, resulting in the formation of a discriminating microstructure with enhanced mechanical properties.

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“…According to Brandrup-Wognsen and Ederyb (1996), a wear-resistance material consisting of 3-60% diamond grains having a coating of at least 1 mm of carbide, nitride or carbonitride of refractory metals can be sintered with Co, Ni and/or Fe in the solid state under pressure of nearly 33 MPa without diamond graphitization. According to Miyamoto et al (1997) and Moriguchi, Tsuduki, Ikegaya, Miyamoto, and Morisada (2007), a material consisting of cemented carbide plus diamond coated with SiC can be sintered at 1300 C at 41 MPa for 3 min by use of pulsed-electric current sintering. No graphitization of diamond in such a material was found and it has a 50% larger fracture toughness and 10 times better wear-resistance compared to conventional cemented carbides.…”

Section: Diamond-enhanced Cemented Carbidesmentioning

confidence: 99%

Cemented Carbides for Mining, Construction and Wear Parts

Konyashin

2014

Comprehensive Hard Materials

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Sintering behavior and properties of diamond/cemented carbides

Cited by 46 publications

References 9 publications

ADDITION EFFECT OF CrB2 ON THE DIAMOND COMPOSITE PROPERTIES OF OBTAINED IN THE Fe-Cu-Ni-Sn SYSTEM

ADDITION EFFECT OF CrB2 ON THE DIAMOND COMPOSITE PROPERTIES OF OBTAINED IN THE Fe-Cu-Ni-Sn SYSTEM

Coatings on ceramic powders by rotary chemical vapor deposition and sintering of the coated powders

Cemented Carbides for Mining, Construction and Wear Parts

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