Hard and wear-resistant titanium nitride films for ceramic cutting tools by pulsed high energy density plasma

Peng, Zhijian; Hao, Miao; Wang, Wei; Yang, Sui; Liu, Chizi; Liu, Qi

doi:10.1016/s0257-8972(02)00776-4

Cited by 40 publications

(28 citation statements)

References 7 publications

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“…Because of the excellent properties, such as fracture toughness, high hardness and modulus, Sialon ceramic cutting inserts are usually for machining the high-temperature alloys in dry and high speed conditions [1][2][3][4][5]. But, oxidation, chemical dissolution and frictional wear of the cutting inserts will be happened during the turning process due to the high temperatures encountered [6].…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Study of TiAlN and CrAlN Coatings Deposited on Sialon Ceramic Cutting Inserts by Physical Vapor Deposition

Liu¹,

Ma²,

Du³

2017

dtetr

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Abstract. TiAlN and CrAlN coatings were prepared by physical vapor deposition (PVD) on Sialon ceramic cutting tools. The results illustrated that the surface morphology of TiAlN coating was smoother than that of CrAlN coating. The thickness of TiAlN coating was about 1 µm, which was thicker than that of CrAlN coating (about 0.5µm). However, the hardness of TiAlN coating was lower (30.1 GPa) than that of CrAlN coating (37.5 GPa). Also the elastic modulus of TiAlN coating (346.9 GPa) was also lower than that of CrAlN coating (430.7 GPa), indicating that the stiffness of CrAlN coating was better than that of TiAlN coating. According to scratch tests, the adhesion force of TiAlN and CrAlN coatings were 31 N and 45 N, respectively, which revealed that the CrAlN coating exhibited better adhesion than the TiAlN coating. Cutting performance of the TiAlN coated and CrAlN coated Sialon ceramic cutting inserts were investigated by turning nickel-based alloys under dry conditions. For comparison, uncoated Sialon ceramic cutting inserts were also used for turning tests under the same conditions. The results indicated that the cutting performance of the inserts was considerably improved by the TiAlN and CrAlN coatings on the surfaces. The dominant failure mechanisms of the CrAlN coated inserts were abrasive and adhesive wear, whereas adhesive wear and spalling were the main failure mechanisms of the TiAlN coated inserts. The service life of TiAlN and CrAlN coated inserts were much longer than that of the uncoated inserts, indicating that the two coatings could effectively protect the inserts from wear.

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Section: Introductionmentioning

confidence: 99%

“…However, for silicon nitride hard coatings deposited by CVD and PVD, that have been more investigated [9,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of TiAlN and CrAlN Coatings Deposited on Sialon Ceramic Cutting Inserts by Physical Vapor Deposition

Liu¹,

Ma²,

Du³

2017

dtetr

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“…This method enables us to combine thermal influence of hot plasma with doping by the particles of the plasma flow. Today, the most important applications of pulsed plasma processing (PPP) are: formation of p-n junctions, doping of steels with nitrogen combined with simultaneous surface recrystallization, preparation of mixed surface layers on metals and ceramics, formation of surface alloys, and a pretreatment (cleaning) of metals and ceramics for the PVD coatings [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…In [5] the authors presented the results of investigations of properties of the modified surface layer treated by nitrogen plasma flows, with parameters varied in a wide range (several devices were used): time duration τ = 1 -100 µs, plasma flow energy density E = 2 -30 J/cm 2 , energy of particles W = 0.4 -10 keV. Based on the experimental results, the authors concluded that changes in the surface structure do not noticeably depend on changes in particle energy and pulse duration, but depend on the energy density applied to the sample surface.…”

Section: Introductionmentioning

confidence: 99%

Structure and Microhardness of Steel Samples after Pulse Plasma Flows Processing

Zhukeshov¹,

Gabdullina²,

Amrenova³

et al. 2013

MSA

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The phase structure of surfaces of steel samples, modified by pulse plasma processing, was analyzed using XRD and metallographic methods. It has been shown, that after pulse plasma processing under different conditions a modified structure consisting of three new phases, including austenite, iron nitride and carbide, is formed. The dependence of phase transition and microhardness on plasma flow parameters has been studied. A sharp decrease in the dimensions of ferrite crystallites after the impact of plasma flow is observed. The main purpose of hardening of common steel samples is formation of nano-dimension ferrite with oriented iron carbide on grains.

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“…Recent work furthermore deals with modifying surface layers, e.g. to improve corrosion [10] or wear resistance [11,12]. However, particle formation and growth are inherent to pulsed plasma processes also, but have not yet been subject of intense investigations.…”

Section: Introductionmentioning

confidence: 99%

Particle generation in pulsed plasmas

Artelt

Rott

Höschen

et al. 2008

Plasma Devices and Operations

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A new pulsed coaxial plasma generator (PCPG) has been developed in order to allow for investigating particle generation in the quench of a propagating jet. The related process provides an extremely transient environment which is characterised by initially high energy and charge densities, steep temperature gradients and short particle residence times. The combination of high quench rates and high charge densities, which can not be obtained in conventional reactors such as in flames or quasi stationary plasmas, provide in fact a potential for "freezing" of non-equilibrium phases and for tailoring particle characteristics by means of controlling particle-particle interactions. The pulsed plasma is characterised by means of determining the energy coupling, the charge density, the expansion behaviour, and the evolution of temperature. Particle properties such as primary particle size and aggregate structure are determined for varying process parameters, namely energy coupling, precursor injection, and ambient pressure.

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Hard and wear-resistant titanium nitride films for ceramic cutting tools by pulsed high energy density plasma

Cited by 40 publications

References 7 publications

A Comparative Study of TiAlN and CrAlN Coatings Deposited on Sialon Ceramic Cutting Inserts by Physical Vapor Deposition

A Comparative Study of TiAlN and CrAlN Coatings Deposited on Sialon Ceramic Cutting Inserts by Physical Vapor Deposition

Structure and Microhardness of Steel Samples after Pulse Plasma Flows Processing

Particle generation in pulsed plasmas

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