Preparation of a Microprism Ni-Ceo₂Nanocomposite Mold by Electroforming

Abstract

Electroforming has been applied in the fabrication of a mold. However, its lower microhardness has prevented its wider usage in general plastics and optical mold making. In this paper, CeO 2 nanoparticles is first added to the bath to improve the microhardness of the electroformed microprism mold. Compared with microprism pure nickel mold, the microhardness and the wear resistance of the microprism Ni-CeO 2 nanocomposite mold were significantly improved. The maximum microhardness of 530 HV was observed in the nanocomposite deposits obtained at the current density of 1 Adm -2 , and the microhardness of pure nickel is approximately 291 HV. Finally, a microprism Ni-CeO 2 nanocomposite mold was successfully electroformed.

Development of a Large-Area Hot Embossing Mold with Micro-Sized Structures

“…Surface roughnesses of the micro-scale structures of the hot-embossed part are better than that of the epoxy resin mold since the embossed material is in a semi-liquid state during hot embossing molding. According to the results described above, the method proposed in this work for fabricating a large-area hot embossing mold with micro-sized structures [24,25] is a cost-effective approach since this method requires no special skill or equipment compared to laser micromaching, 5-axis CNC micromaching, and electroforming [26]. The thermal conductivity of a large-area epoxy resin mold is an important issue in the hot embossing molding because higher thermal conductivity provides higher productivity during mass production.…”

Continuous roller nanoimprinting: next generation lithography

“…In direct roller mold processing, the seamless pattern can be formed on the cylindrical surface of the roller through direct laser writing, electron beam writing, 31 etching, 32 electroforming, 31,33 lateral silicon oxidation, 34 chemical vapour deposition (CVD) 35 or diamond blade writing. 36 As shown in Fig.…”

Epoxy tooling: Technologies, developments, sustainability and future interest to industry 4.0

“…Steel and cast iron are often used for manufacturing sheet metal forming dies for sheet metal mass production. 33,34 Nowadays, various methods can also be used to make sheet metal forming tools using low melting point alloys, 35,36 electroforming 37 and thermal plasma spray coating. 38 However, some disadvantages of these techniques include high investment in machinery, high operating costs and time-consuming processes.…”