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Patent Searching and Data


Title:
METHOD FOR IMPROVING PERFORMANCE OF MODIFICATION LAYER OF MATERIAL SURFACE AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2016/161742
Kind Code:
A1
Abstract:
Provided is a method for improving performance of a modification layer of a material surface. The method comprises: coating an inorganic zinc-silicon rich sol-gel on a material surface to be processed to form a priming coating, and coating a zinc chromate coating liquid on the priming coating to form a zinc chromate membrane. The inorganic zinc-silicon rich sol-gel comprises a soluble alkali metal silicate material, an inorganic gel and ultrafine zinc powder, and the zinc chromate coating liquid comprises sheet-like zinc powder, aluminum powder, a chromic anhydride, a boronic acid and a surfactant, etc. Also provided is an application of the method in an aspect of magnet protection to obtain a permanent magnet and a device comprising the same. The method has a simple process, easy control, low costs, is safe and environmentally friendly, and suitable for processing various NdFeB permanent magnets.

Inventors:
ZHOU QIAOYING (CN)
GUO SHUAI (CN)
YAN ARU (CN)
LI DONG (CN)
Application Number:
PCT/CN2015/087595
Publication Date:
October 13, 2016
Filing Date:
August 20, 2015
Export Citation:
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Assignee:
INST OF MAT TECH AND ENG CHINESE ACAD OF SCIENCES ZHEJIANG NINGBO (CN)
International Classes:
C23C28/00; C09D1/00; C09D5/10; C23C24/00
Foreign References:
CN102464902A2012-05-23
CN1934660A2007-03-21
CN104004397A2014-08-27
CN1900361A2007-01-24
CN103996525A2014-08-20
Attorney, Agent or Firm:
NANJING LI&FENG INTELLECTUAL PROPERTY AGENCY(SPECIAL GENERAL PARTNERSHIP) (CN)
南京利丰知识产权代理事务所(特殊普通合伙) (CN)
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