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Method for preparing reflective film on the surface of ultra light reflective mirror

A mirror and reflective film technology, applied in the field of surface engineering, can solve the problems of rough surface, large performance differences of reflective materials, poor matching, etc., to achieve the effect of easy repetition, improved compactness and adhesion, and easy polishing.

Inactive Publication Date: 2015-12-16
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the rough surface of carbon fiber reinforced resin matrix composite materials and the large difference in performance and poor matching with reflective materials, it is very difficult to prepare reflective materials on the surface of carbon fiber reinforced resin matrix composite mirror blanks, and there are few related research reports
The present invention proposes a method for preparing a reflective film on the surface of a mirror by using vacuum ion plating technology, but no relevant research reports have been seen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Chemical cleaning: Use pure nitrogen to blow the mirror blank, and use analytical pure anhydrous ethanol to chemically clean the surface of the mirror.

[0026] (2) Vacuum degassing: Fix the mirror blank on the workpiece frame in the vacuum chamber, turn on the front vacuum pump and the high vacuum pump in turn to evacuate the vacuum to a vacuum degree of 1×10 -3 Pa, turn on the heater to heat the vacuum chamber to 100°C, and perform vacuum degassing treatment on the mirror blank;

[0027] (3) Ion beam cleaning: Introduce Ar gas into the vacuum chamber to keep the vacuum at 2×10 -2 Pa; Turn on the bias power supply, adjust the bias voltage to -200V; turn on the ion source at the same time, set the working voltage to 2.0kV, and the ion beam cleaning time to 30min, and perform ion beam cleaning on the mirror;

[0028] (4) Deposit reflective film: open the Cr target, set the working current to 60A, and plate the Cr transition layer for 30 minutes; open the Ni target, ...

Embodiment 2

[0031] (1) Chemical cleaning: Use pure nitrogen to blow the mirror blank, and use analytical pure acetone to chemically clean the surface of the mirror.

[0032] (2) Vacuum degassing: Fix the mirror blank on the workpiece frame in the vacuum chamber, turn on the front-stage vacuum pump and high vacuum pump in turn to evacuate the vacuum to a vacuum degree of 5×10 -3 Pa, turn on the heater to heat the vacuum chamber to 140°C, and perform vacuum degassing treatment on the mirror blank;

[0033] (3) Ion beam cleaning: pass Ar+O into the vacuum chamber 2 gas, maintain a vacuum of 4 x 10 -2 Pa; Turn on the bias power supply, adjust the bias voltage to -100V; turn on the ion source at the same time, set the working voltage to 3.0kV, and the ion beam cleaning time to 20min, and perform ion beam cleaning on the mirror;

[0034] (4) Deposit the reflective film: open the NiCr target, set the working current to 70A, and plate the NiCr transition layer for 20 minutes; open the Ag target...

Embodiment 3

[0037] (1) Chemical cleaning: Use pure nitrogen to blow the mirror blank, and use analytical pure anhydrous ethanol to chemically clean the surface of the mirror.

[0038] (2) Vacuum degassing: Fix the mirror blank on the workpiece frame in the vacuum chamber, turn on the front-stage vacuum pump and high vacuum pump in turn to evacuate the vacuum until the vacuum degree is better than 3×10 -3 Pa, turn on the heater to heat the vacuum chamber to 120°C, and perform vacuum degassing treatment on the mirror blank;

[0039] (3) Ion beam cleaning: Introduce Ar gas into the vacuum chamber to keep the vacuum at 3×10 -2 Pa; Turn on the bias power supply, adjust the bias voltage to -150V; turn on the ion source at the same time, set the working voltage to 2.5kV, and the ion beam cleaning time to 25min, and perform ion beam cleaning on the mirror;

[0040] (4) Deposit reflective film: open the Cr target, set the working current to 50A, and plate the Cr transition layer for 30 minutes; o...

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Abstract

The invention discloses a method for preparing a reflective film on the surface of an ultra light reflective mirror. The method comprises the following steps: (1) mirror surface treatment: subjecting the surface of the ultra light reflective mirror to dust blowing with dry gas and cleaning the surface with ethanol or acetone; (2) vacuum gas removal: fixing and heating the ultra light reflective mirror treated by the step (1) in vacuum; (3) ion beam cleaning: feeding argon or mixture gas of argon and oxygen at the state of vacuum, and performing ion beam cleaning on the ultras light reflective mirror; (4) reflective film deposition; plating the mirror surface of the ultra light reflective mirror with chrome or nickel chrome alloy layer, and then plating the mirror surface with nickel or silver layer. The reflective mirror substrate is subjected to technical means such as chemical cleaning, vacuum gas removal, ion beam cleaning and reflective film deposition, so as to effectively increase the compactness and adhesion of the reflective film, and solve the technical problem in preparing the reflective film on the surface of the substrate of the carbon fiber reinforced resin matrix composite material reflective mirror.

Description

technical field [0001] The invention relates to the technical field of surface engineering, in particular to a carbon fiber-reinforced resin-based composite material for an ultra-light reflector. In order to realize its surface reflection function, a method for preparing a reflective film on the surface of a carbon-fiber-reinforced resin-based composite reflector blank. Background technique [0002] Because carbon fiber reinforced resin matrix composites have the characteristics of small specific gravity, high specific strength and specific modulus, and good thermal stability, they are ideal materials for manufacturing ultra-light mirrors, but a layer of reflective material must be prepared on the surface of the mirror blank In order to realize the reflection function. Due to the rough surface of carbon fiber-reinforced resin-based composite materials and the large difference in performance and poor matching with reflective materials, it is very difficult to prepare reflecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/02C23C14/32C23C14/20
Inventor 马占吉肖更竭武生虎牟先凯
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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