Development of polycrystalline Ni–P mold by heat treatment for glass microgroove forming

Zhou, Tianfeng; Yan, Jiwang; Liang, Zhiqiang; Wang, Xibin; Kobayashi, Ryota; Kuriyagawa, Tsunemoto

doi:10.1016/j.precisioneng.2014.07.002

Cited by 27 publications

(9 citation statements)

References 20 publications

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“…NiP [9] Electroplating Good machinability and chemical inertness About 500 Carbide-bonded graphene [10] Chemical vapor deposition rings was measured five times with the data averaged.…”

Section: Advanced Coatings Preparation Methods Properties Maximum Wormentioning

confidence: 99%

“…Friedrichs et al [8] deposited the Pt-Ir coatings on the WC substrates by direct current magnetron sputtering and revealed the degradation mechanism of the coating through detailed characterization. Zhou et al [9] developed the electroless plated nickel-phosphorus (Ni-P) as a mold material for glass molding. He et al [10] synthesized the carbide-bonded graphene networks on the Si substrate by chemical vapor deposition and confirmed that the film exhibits an excellent chemical inertness and mechanical properties in glass molding process.…”

Section: Introductionmentioning

confidence: 99%

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High-temperature friction behavior of amorphous carbon coating in glass molding process

Wen

et al. 2020

Friction

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In the glass molding process, the sticking reaction and fatigue wear between the glass and mold hinder the service life and functional application of the mold at the elevated temperature. To improve the chemical inertness and anti-friction properties of the mold, an amorphous carbon coating was synthesized on the tungsten carbide-cobalt (WC–8Co) substrate by magnetron sputtering. The friction behavior between the glass and carbon coating has a significant influence on the functional protection and service life of the mold. Therefore, the glass ring compression tests were conducted to measure the friction coefficient and friction force of the contact interface between the glass and amorphous carbon coating at the high temperature. Meanwhile, the detailed characterization of the amorphous carbon coating was performed to study the microstructure evolution and surface topography of the amorphous carbon coating during glass molding process by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Ramon spectroscopy, and atomic force microscope (AFM). The results showed that the amorphous carbon coating exhibited excellent thermal stability, but weak shear friction strength. The friction coefficient between the glass and coating depended on the temperature. Besides, the service life of the coating was governed by the friction force of the contact interface, processing conditions, and composition diffusion. This work provides a better understanding of the application of carbon coatings in the glass molding.

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“…NiP [9] Electroplating Good machinability and chemical inertness About 500 Carbide-bonded graphene [10] Chemical vapor deposition rings was measured five times with the data averaged.…”

Section: Advanced Coatings Preparation Methods Properties Maximum Wormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-temperature friction behavior of amorphous carbon coating in glass molding process

Wen

et al. 2020

Friction

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show abstract

“…However, the crystal transition of electro-less Ni-P would occur in amorphous materials once the temperature exceeds 400°C [58], causing mold surface deformation and diminishing the accuracy of glass molding. To avoid mold surface deformation and achieve accurate and precise fabrication of microstructures for high-quality mold, an initial heat treatment method is proposed to eliminate irregular concave deformation during the crystallization process [59].…”

Section: Microstructure Generation Through Diamond Cuttingmentioning

confidence: 99%

Recent advancements in optical microstructure fabrication through glass molding process

et al. 2017

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Optical microstructures are increasingly applied in several fields, such as optical systems, precision measurement, and microfluid chips. Microstructures include microgrooves, microprisms, and microlenses. This paper presents an overview of optical microstructure fabrication through glass molding and highlights the applications of optical microstructures in mold fabrication and glass molding. The glass-mold interface friction and adhesion are also discussed. Moreover, the latest advancements in glass molding technologies are detailed, including new mold materials and their fabrication methods, viscoelastic constitutive modeling of glass, and microstructure molding process, as well as ultrasonic vibrationassisted molding technology.

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“…Electroless nickel-phosphide (Ni-P) plating is an important mold surface preparation technology, which provides hard, wear-resistant, and corrosion-resistant surfaces with excellent micromachinability for single-point diamond cutting [12,13]. A two-step cutting process that eliminates burr formation along the microgroove side and improves the quality of the microgroove on Ni-P plating was proposed by Yan et al [14].…”

Section: Introductionmentioning

confidence: 99%

Defect Analysis in Microgroove Machining of Nickel-Phosphide Plating by Small Cross-Angle Microgrooving

Dong

Zhou

Pang

et al. 2018

Journal of Nanomaterials

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Crystalline nickel-phosphide (c-Ni-P) plating is a newly developed mold material for precision glass molding (PGM) to fabricate microgrooves. In the ultraprecision cutting process of the c-Ni-P plating material, the neighboring microgrooves are required to adjoin with each other to ensure acute microgroove ridges and miniaturize the microgroove size. Generally, defects of burrs and fracture pits can easily occur on the ridges when the plating layer is grooved. Burrs appear when tears dominate in material removal with a large adjacent amount. With the change of the adjacent amount, the removed material is sheared out from the workpiece, and when the cutting depth of the groove ridge is over the brittle-ductile transition thickness, fracture pits arise. To restrict these defects, a small cross-angle microgrooving method is proposed to test the critical adjacent amount range efficiently. It is found that an acute ridge of the microgroove is formed with a small enough adjacent amount; when this amount is in the range of 570 nm~720 nm in the microgroove machining process, fracture pits begin to arise on the gradient edge. High-quality microgrooves can be obtained based on this methodology.

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Development of polycrystalline Ni–P mold by heat treatment for glass microgroove forming

Cited by 27 publications

References 20 publications

High-temperature friction behavior of amorphous carbon coating in glass molding process

High-temperature friction behavior of amorphous carbon coating in glass molding process

Recent advancements in optical microstructure fabrication through glass molding process

Defect Analysis in Microgroove Machining of Nickel-Phosphide Plating by Small Cross-Angle Microgrooving

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