Suppression mechanism of tool wear by phosphorous addition in diamond turning of electroless nickel deposits

Furushiro, Naomichi; Tanaka, Hiroaki; Higuchi, Masahiro; Yamaguchi, Tomomi; Shimada, S.

doi:10.1016/j.cirp.2010.03.058

Cited by 19 publications

(10 citation statements)

References 9 publications

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“…Presently, there is a lack of reliable method for the evaluation of graphite and diamond in the nanoscale simulation of diamond cutting. With the aid of molecular dynamics simulation, the in-depth understanding of the graphitization mechanism of diamond, especially knowing the graphitization behavior considering its application on cutting tool is of great significance to fully explore the advance of diamond machining technique [ 12 - 14 ].…”

Section: Introductionmentioning

confidence: 99%

Graphitization Behavior of Single Crystal Diamond for the Application in Nano-Metric Cutting

Bai

Wang

Guo

et al. 2018

CNANO

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Background: Graphitization behavior of diamond has received an increasing interest in nanoscale machining of some hard and brittle materials. Diamond has always been an important and excellent tool material in cutting area. However, the graphitization of the diamond tool is inevitable when it was used in special conditions. It is indicated that the graphitization of diamond crystal has great influence on the wear resistance of diamond cutting tool. The graphitization behavior needs to be investigated extensively in nanoscale with an atomic view. Molecular dynamics simulation provides a useful tool for understanding of the graphitization mechanism of diamond. The investigation on graphi-tization behavior of single crystal diamond can also provide a useful reference for the application of diamond cutting tool.Materials and Methods: In this paper, a molecular dynamics (MD) diamond crystal model is built to examine the graphitization behavior of diamond under various conditions. The sixfold ring method was employed to identify the structural characteristics of graphite and diamond. The effects of temperature and crystal orientation on the graphitization of diamond have been revealed. Considering the effect of temperature, the anisotropy of diamond graphitization against various crystal planes is presented and discussed carefully. The nano-metric cutting model of diamond tool evaluated by the sixfold ring meth-od also proves the graphitization mechanisms in atomic view.Results: Results indicate that the sixfold ring method is a reliable method to evaluate the graphitization behavior of diamond crystal. There exists a critical temperature of the graphitization of diamond. The results also show that {111} plane is more easy to get graphitization as compared with other crystal planes. However, {100} plane of diamond model presents the highest anti-graphitization property.Conclusion: The obtained results have provided the in-depth understanding on the wear of diamond tool in nano-metric machining and underpin the development of diamond cutting tool

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Section: Introductionmentioning

confidence: 99%

Graphitization Behavior of Single Crystal Diamond for the Application in Nano-Metric Cutting

Bai

Wang

Guo

et al. 2018

CNANO

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“…高純度グラファイトを超高圧・高温の条件下でダイヤモンドに直接変換したナノ多結晶ダイヤモンド(Nano Polycrystalline Diamond: NPD) (1) は，単結晶ダイヤモンドより硬いだけでなく，へき開性を持っていない．したがって，ビッカース硬さが 1 000 Hv 以上の高硬度材料に対して超精密切削加工を行うことができる次世代の工具素材として期待される (2) (3) ，この脆弱層が機械的なアブレーション作用によって除去されるといった現象が起こり得ると考えられた．また，砥石研削点の温度が高い場合には酸化・還元反応 (4) の他に NPD の表面に熱変質層 (2), (4) が生成され，この熱変質層が機械的なアブレーション作用によって除去されるといった現象も起こり得ると考えられた．表 1 に示しているのは，本研究で使用した 9 種類の遷移金属とその物性である．他の原子から電子を引きつける強さを表す電気陰性度 (5) と，d 軌道を満たしている電子の飽和度を表す d 電子飽和度 (6), (7) との関係は図 1 のよう…”

Section: 緒言unclassified

Thermochemical Reactions between Nano-Polycrystalline Diamond and Grinding Tool Made of Polycrystalline Diamond

Semba

Ohta²,

Amamoto

et al. 2011

Trans.JSME(C)

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A dry grinding test of a nano-polycrystalline diamond (NPD) using a polycrystalline diamond (PCD) disc as a truer was conducted to clarify the mechanism of thermochemical reactions to remove chips from the NPD. The PCD disc, in which the cobalt used as a second phase was replaced with several transition metals by electrochemical machining and radio frequency sputtering, was used as a truer. It was verified through the grinding test that at least two types of thermochemical reactions generated and affected layers on the ground surface of the NPD were abraded by diamond grains on the PCD truer. One is an affected layer, in which the covalent binding of diamond was weakened by loosing electrons engaged in the binding owing to the transition metal attracting electrons towards itself. Machining efficiency increased and ground surface roughness became rough with an increase in the electronegativity of transition metals when this type of affected layer was generated. The other type of affected layer is a heat-damaged layer, which has the same crystal structure as a laser-machined surface, formed by the friction heat between the NPD and the truer. A generation of this type of affected layer increased and surface roughness became fine by increasing the specific heat capacity of transition metals.

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“…The processing technologies for reducing chemical activity between the tool and the workpiece materials include: gas protection cutting [19], cold plasma assisted cutting [29,30], carbon particle protection cutting [31], liquid nitrogen cooling cutting [20], ultrasonic vibration assisted cutting [21], and highly intermittent cutting [32]. Processes that avoid direct contact between the tool and the substrate include: diamond surface coating [23], surface nitriding/phosphorus in workpiece material [24,33,34], as shown in table 1. In addition, researchers also introduced multi-physics energy fields, such as magnetic fields and electric fields in cutting processing [35].…”

Section: Introductionmentioning

confidence: 99%

A critical review on the chemical wear and wear suppression of diamond tools in diamond cutting of ferrous metals

Guo

Zhang

Pan

et al. 2020

Int. J. Extrem. Manuf.

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Diamond tools play a critical role in ultra-precision machining due to their excellent physical and mechanical material properties, such as that cutting edge can be sharpened to nanoscale accuracy. However, abrasive chemical reactions between diamond and non-diamond-machinable metal elements, including Fe, Cr, Ti, Ni, etc, can cause excessive tool wear in diamond cutting of such metals and most of their alloys. This paper reviews the latest achievements in the chemical wear and wear suppression methods for diamond tools in cutting of ferrous metals. The focus will be on the wear mechanism of diamond tools, and the typical wear reduction methods for diamond cutting of ferrous metals, including ultrasonic vibration cutting, cryogenic cutting, surface nitridation and plasma assisted cutting, etc. Relevant commercially available devices are introduced as well. Furthermore, future research trends in diamond tool wear suppression are discussed and examined.

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Suppression mechanism of tool wear by phosphorous addition in diamond turning of electroless nickel deposits

Cited by 19 publications

References 9 publications

Graphitization Behavior of Single Crystal Diamond for the Application in Nano-Metric Cutting

Graphitization Behavior of Single Crystal Diamond for the Application in Nano-Metric Cutting

Thermochemical Reactions between Nano-Polycrystalline Diamond and Grinding Tool Made of Polycrystalline Diamond

A critical review on the chemical wear and wear suppression of diamond tools in diamond cutting of ferrous metals

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