PVD-CrAlN and TiAlN coated Si 3 N 4 ceramic cutting tools —1. Microstructure, turning performance and wear mechanism

Liu, Wei; Chu, Quanquan; Zeng, Jun-Jie; He, Rongxuan; Wu, Haidong; Wu, Ziwei; Wu, Shanghua

doi:10.1016/j.ceramint.2017.04.041

Cited by 48 publications

(20 citation statements)

References 10 publications

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“…Currently, PVD hard coatings such as CrN, TiN, CrAlN, and TiAlN are used to improve the properties of tool steels and extend the lifetime of mechanical components and tools [7,8,9,10,11]. The introduction of silicon into CrAlN could decrease the grain size, change the coating structure, composition, and its mechanical properties [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Chang

Amrutwar

2019

Materials

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Surface modification of steel has been reported to improve hardness and other mechanical properties, such as increase in resistance, for reducing plastic deformation, fatigue, and wear. Duplex surface treatment, such as a combination of plasma nitriding and physical vapor deposition, achieves superior mechanical properties and resistance to wear. In this study, the plasma nitriding process was conducted prior to the deposition of hard coatings on the SKH9 substrate. This process was done by a proper mixture of nitrogen/hydrogen gas at suitable duty cycle, pressure, and voltage with proper temperature. Later on, the deposition of gradient AlCrSiN coatings synthesized by a cathodic-arc deposition process was performed. During the deposition of AlCrSiN, CrN, AlCrN/CrN, and AlCrSiN/AlCrN were deposited as gradient interlayers to improve adhesion between the coatings and nitrided steels. A repetitive impact test (200k–400k times) was performed at room temperature and at high temperature (~500 °C) to assess impact resistance. The results showed that the tribological impact resistance for the synthesized AlCrSiN increased because of a progressive hardness support. The combination of plasma nitriding and AlCrSiN hard coatings is capable of increasing the life of molding dies and metal forging dies in mass production.

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Section: Introductionmentioning

confidence: 99%

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Chang

Amrutwar

2019

Materials

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“…Though much attention of scientific research has focused on functional ceramics due to their versatile properties such as piezoelectricity, ferroelectricity, dielectric, thermoelectricity, magnetic electricity, structural ceramics are still of great importance due to their widespread applications in a lot of important engineering fields, such as turbine blade and rotors used in aero‐engine, phase transformation toughened zirconia honored as “ceramic steel”, silicon nitride ceramic bearing balls used in high‐end equipment manufacturing, ultra high temperature ceramics (UHTCs) used as inert matrix fuels (IMF) for Gen IV nuclear systems, ceramic joint balls implants (knee, hip, ankle joint) and dental ceramics (such as dental post and orthodontic bracket) used in human body …”

Section: Introductionmentioning

confidence: 99%

3D printing of dense structural ceramic microcomponents with low cost: Tailoring the sintering kinetics and the microstructure evolution

Liu

Tian

et al. 2018

J Am Ceram Soc

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In this study, we have successfully developed a unique 3D printing approach based on mask-image-projection stereolithography (MIP-SL) to fabricate structural ceramics microcomponents with low cost and high efficiency. Ultra-dense submicron crystalline ceramics without fierce grain growth could be obtained via tailoring the sintering kinetics. The ZrO 2 ceramic microcomponents reached the highest relative density (RD) of 99.7% with the average grain size of 0.52 μm upon sintering at 1550°C while the Al 2 O 3 ceramic microcomponents reached its highest RD of 98.31% with the average grain size of 2.6 μm upon sintering at 1600°C.Oxide ceramics microcomponents of fully flexible design can be produced easily without visible defects via the method developed in this study, which demonstrates significant potential in the applications of microelectromechanical systems, micro-optical electronics systems and micro-opto-electro-mechanical systems. The method developed in this study has addressed the problem successfully by healing the interlayer interface defects in densification process via the sintering kinetic window and microstructure evolution. The current work provides a promising opportunity to fabricate structural ceramic microcomponents with complex shape, high precision, and high surface smoothness. K E Y W O R D S

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“…In another work [67], the wear mechanism of PVD-, CrAlN-and TiAlN-coated Si 3 N 4 ceramic cutting tools was studied. The conducted tests consisted of the turning of GT250 gray cast iron using these coated tools and characterizing the wear mechanisms.…”

Section: Tool Wear Mechanismsmentioning

confidence: 99%

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

Sousa

Silva

2020

Metals

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Turning continues to be the largest segment of the machining industry, which highlights the continued demand for turned parts and the overall improvement of the process. The turning process has seen quite an evolution, from basic lathes using solid tools, to complex CNC (Computer Numerical Control) multi-process machines, using, for the most part, coated inserts and coated tools. These coatings have proven to be a significant step in the production of high-quality parts and a higher tool life that have captivated the industry. Continuous improvement to turning coated tools has been made, with many researches focusing on the optimization of turning processes that use coated tools. In the present paper, a presentation of various recently published papers on this subject is going to be made, mentioning the various types of coatings that have recently been used in the turning process, the turning of hard to machine materials, such as titanium alloys and Inconel, as well as the interaction of these coatings with the turned surfaces, the wear patterns that these coatings suffer during the turning of materials and relating these wear mechanisms to the coated tool’s life expectancy. Some lubrication conditions present a more sustainable alternative to current methods used in the turning process; the employment of coated tool inserts under these conditions is a current popular research topic, as there is a focus on opting for more eco-friendly machining options.

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PVD-CrAlN and TiAlN coated Si 3 N 4 ceramic cutting tools —1. Microstructure, turning performance and wear mechanism

Cited by 48 publications

References 10 publications

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

Effect of Plasma Nitriding Pretreatment on the Mechanical Properties of AlCrSiN-Coated Tool Steels

3D printing of dense structural ceramic microcomponents with low cost: Tailoring the sintering kinetics and the microstructure evolution

Recent Advances in Turning Processes Using Coated Tools—A Comprehensive Review

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