Method for obtaining angstrom-level smooth surface of yttrium oxide transparent ceramic

A transparent ceramic and smooth surface technology, which is applied in the direction of optical surface grinders, grinding/polishing equipment, polishing compositions containing abrasives, etc., can solve the problems of high cost, complicated equipment, low efficiency, etc., and achieve good expected results Effect

Active Publication Date: 2020-09-08
XUZHOU NORMAL UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, the processing methods for ultra-smooth Angstrom-level surfaces include bath polishing, float polishing, ion beam polishing, liquid jet polishing, and magnetorheological polishing. Although the above methods can process better ultra-smooth Angstrom-level surfaces, these methods are inefficient. Low, complex equipment, high cost

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  • Method for obtaining angstrom-level smooth surface of yttrium oxide transparent ceramic
  • Method for obtaining angstrom-level smooth surface of yttrium oxide transparent ceramic
  • Method for obtaining angstrom-level smooth surface of yttrium oxide transparent ceramic

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Embodiment 1

[0024] The present invention provides a method for obtaining angstrom-level smooth surface of yttrium oxide transparent ceramics. Taking the processing of yttrium oxide transparent ceramics with a diameter of 60mm and a thickness of 10mm as an example, the smoothness is required to meet the national standard I level, and the specific steps of the aperture 0.5N are:

[0025] (1) Preparation of coarse throwing liquid: Pour 500ml of deionized water into a beaker, weigh 30 grams of 0.5 micron chromium oxide micropowder and pour it into the beaker, stir to obtain a solution containing zirconia micropowder, adjust the pH value with hydrofluoric acid 5.4-5.8; chromium oxide powder has moderate hardness (Mohs hardness 6.5-7), good adhesion, can not only improve the removal efficiency but will not cause deep damage layer on the surface of yttrium oxide transparent ceramic devices; The surface is corrosive, which can better remove the sub-surface damage layer during the polishing process...

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Abstract

The invention discloses a method for obtaining an angstrom-level smooth surface of yttrium oxide transparent ceramic. The method comprises the steps that acidic rough polishing liquid and alkaline fine polishing liquid are prepared respectively; an asphalt polishing disc is manufactured; rough grinding and fine grinding of the yttrium oxide transparent ceramic are carried out in sequence, and after the fine grinding is completed, the ceramic is placed in aqua regia to soak for 24 hours; the yttrium oxide transparent ceramic soaked for 24 hours is heated on a heating platform again, then is polished on the asphalt polishing disc with the rough polishing liquid after cooling, the ceramic is taken down after qualifying and cleaned, then the ceramic is finally polished on the asphalt polishingdisc with the fine polishing liquid, and is taken down after qualifying and cleaned. The surface roughness of yttrium oxide optical ceramic processed through the method reaches 1.65 angstroms, good expected effects are achieved, and the method is high in processing efficiency and low in cost.

Description

technical field [0001] The invention relates to the technical field of transparent optical ceramic processing, in particular to a method for obtaining an Angstrom-level smooth surface of yttrium oxide transparent ceramics. Background technique [0002] The Angstrom-level smooth surface of optical components refers to the surface of optical components with a surface roughness less than 0.5nm, low surface waviness and high surface shape accuracy; as an optical component, in order to obtain the highest reflectivity, special emphasis is placed on low surface Scattering characteristics or extremely low roughness values, angstrom-level ultra-smooth surfaces play an increasingly important role in the field of modern optics and optoelectronics, and the corresponding angstrom-level ultra-smooth processing technology has also become an important part of modern ultra-precision processing technology, angstrom-level Ultra-smooth surface is an effective means to reduce the scattering loss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B13/00B24B13/01C09G1/02B24D18/00B24D13/14
CPCB24B1/00B24B13/00B24B13/01B24D13/14B24D18/0009C09G1/02
Inventor 徐斌
Owner XUZHOU NORMAL UNIVERSITY
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