Yttrium-containing rare earth polishing solution and preparation method thereof

A technology of yttrium rare earth and polishing fluid, which is applied in the direction of polishing compositions containing abrasives, etc., which can solve the problems of resource backlog, low value of crude yttrium, and inability to form market sales.

Inactive Publication Date: 2018-12-28
甘肃稀土新材料股份有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Crude yttrium with low purity is not only of low value but also ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Yttrium-containing rare earth polishing solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] 1. The preparation of yttrium-containing rare earth polishing powder comprises the following steps:

[0021] Preparation of yttrium-containing rare earth polishing powder precursor, wherein yttrium oxide accounts for the rare earth precursor REO

[0022] 10~40%, the precursor of rare earth polishing powder is one or more mixtures of rare earth oxides, carbonates, sulfates or nitrates;

[0023] Fluorinate the above precursors, control the fluorine content to 0-20% of TREO, and the fluorinating agent is

[0024] One or more mixtures of ammonium bifluoride, silicofluoric acid, hydrofluoric acid, yttrium fluoride, sodium fluoride and ammonium fluoride; after fluorination, dry and calcined, the drying temperature is 200-900°C, and the calcination temperature is 850 ~1100℃;

[0025] The calcined product is crushed and classified, and the particle size of the crushed and classified is required to be D50: 0.5-4.0um,

[0026] D100: 3 ~ 16um.

[0027] 2. Preparation of yttriu...

Embodiment 1

[0033] The rare earth polishing liquid formula of embodiment 1 contains in every 1kg solvent water: containing yttrium rare earth polishing powder (CeO 2 : 10%, Y 2 o 3 : 60%, La 2 o 3 : 30%) 200g, dispersant sodium hexametaphosphate 0.6g, anti-caking agent silica 1.0g, synergist sodium tripolyphosphate and ammonium heptamolybdate 0.2g each, ball mill for 2 hours, ph is 8.5.

Embodiment 2

[0035] The rare earth polishing liquid formula of embodiment 2 contains in every 1kg solvent water: containing yttrium rare earth polishing powder (CeO 2 : 99.8%, Y 2 o 3 : 0.1%, La 2 o 3 : 0.1%) 200g, dispersant sodium hexametaphosphate 0.6g, anti-caking agent silica 1.0g, synergist sodium tripolyphosphate and ammonium heptamolybdate 0.2g each, ball mill for 2 hours, ph is 8.5.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
D5aaaaaaaaaa
Login to view more

Abstract

The invention discloses a yttrium-containing rare earth polishing solution. The yttrium-containing rare earth polishing solution comprises the following components by mass percentage: 10-50% of yttrium-containing rare earth polishing powder, 0.3%-1.5% of a dispersing agent, 0.5%-3% of an anti-hardening agent, 0.2%-5% of a synergist and the balance of a solvent; and a PH value of the polishing solution is 7.5-9.5. The yttrium-containing rare earth polishing solution, as a grinding material, is mainly used for polishing glass of a cover plate of a mobile phone and other optical lenses.

Description

technical field [0001] The invention relates to a rare earth polishing liquid containing yttrium and a preparation method thereof, belonging to the technical field of preparation of rare earth materials. Background technique [0002] With the rapid development of electronic information technology, the traditional polishing technology applied to optoelectronic materials can only achieve general planarization, and only the rare earth polishing liquid CMP technology with higher performance can achieve global planarization of optoelectronic materials , with the promotion of 5G technology, polishing fluid will occupy a larger market share. [0003] In the existing patent literature, the raw materials for the manufacture of rare earth polishing liquid are mainly lanthanum cerium series, lanthanum cerium praseodymium series, lanthanum cerium praseodymium neodymium series, pure cerium series, and rare earth polishing powder partially doped with aluminum and silicon. Rare earth poli...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09G1/02
CPCC09G1/02
Inventor 姜霁涛史俊龙牛娟娟金玉培蒋春虎柴进忠马相琴雷美美王保国李成荣
Owner 甘肃稀土新材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap