Shenzhen University

No.59 Institute of China Ordnance Industry

University of Science and Technology Liaoning

University of Science and Technology Liaoing

Feng Gong

Qiang Chen

Zhiwen Xie

Kangsen Li

Xinfang Huang

Yuanyuan Wan

Zhihui Xing

Disclosed are a coating for glass molding, a preparation method and application thereof and a mold having the coating. The coating includes a nitride layer and nano precious metal particles which are dispersed in the nitride layer. A surface roughness of the coating is 2-12 nm. The preparation method of the coating includes: cleaning a substrate and targets under an inert gas; and under a mixed atmosphere of nitrogen and the inert gas, depositing, with a high-purity W target, a high-purity Cr target and a precious metal inserted Cr target, a Cr intermediate layer, a nitride layer and nano precious metal particles on a surface of the substrate. The coating has good oxidation resistance and excellent anti-adhesion property. Moreover, the coating effectively inhibits the adhesion between the glass body and the mold.

Coatings for glass molding, preparation method and application thereof and molds having coatings

A micro- and nano-hot embossing method for an optical glass lens array, including: preparing a mold with a micro-hole array by micro EDM, where the micro-hole array matches an optical glass lens array and the mold is made of a hard metal material which is conductive and meets strength and temperature requirements; preparing a nano nitride-based graded composite coating on a surface of the mold by magnetron sputtering; and pre-fabricating a glass preform and then placing the glass preform on the surface of the mold; heating the glass preform and hot embossing by a glass molding machine in vacuum; cooling in nitrogen atmosphere; and demolding to produce the optical glass lens array. The micro- and nano-hot embossing method of the present invention improves the surface quality of the optical glass lens array and reduces the cost and difficulty for manufacturing.

Micro- and nano-hot embossing method for optical glass lens arrays

Disclosed is a coating made of an organic material on a mold for glass molding. The coating comprises CrWN, where 0.15&#x3c;x&#x3c;0.4, and 0.2&#x2264;y&#x2264;0.45. The coating has excellent high temperature resistance and anti-adhesion properties, thus being a promising coating material for molds.

Coating on mold for glass molding and a preparation method and applications thereof

Disclosed are coatings made of inorganic materials on molds for glass molding, particularly, a graded coating of element diffusion inhibition and adhesion resistance on molds for glass molding. The graded coating includes a Cr adhesion layer which is bonded with a substrate, a CrN intermediate layer and a CrWNsurface layer, where 0.15&#x3c;x&#x3c;0.4, and 0.2&#x2264;y&#x3c;0.45. The graded coating has excellent crack growth suppression and adhesion resistance.

Growing community of inventors

Shenzhen, China

Feng Gong