公开(公告)号：US20220152704A1

公开(公告)日：2022-05-19

申请号：US16649354

申请日：2019-07-25

Applicant: University of Science and Technology Beijing

Inventor： Chaofang Dong ,  Xiaogang Li ,  Xuequn Cheng ,  Ruixue Li ,  Decheng Kong ,  Ni Li ,  Xiaoqing Ni ,  Liang Zhang ,  Kui Xiao

IPC: B22F10/22 ,  B22F3/24 ,  C25D9/06

Abstract: The present disclosure provides a method of manufacturing a surface nanotube array of a laser-melted stainless steel, including a step of an anodic oxidation treatment on the stainless steel, which includes performing the anodic oxidation treatment on the stainless steel by applying a voltage between the stainless steel as an anode and a graphite as a cathode in a solution formed by using sodium dihydrogen phosphate, perchloric acid, and ethylene glycol as a solute, and deionized water as a solvent.

公开(公告)号：US11414773B2

公开(公告)日：2022-08-16

申请号：US16649354

申请日：2019-07-25

Applicant: University of Science and Technology Beijing

Inventor： Chaofang Dong ,  Xiaogang Li ,  Xuequn Cheng ,  Ruixue Li ,  Decheng Kong ,  Ni Li ,  Xiaoqing Ni ,  Liang Zhang ,  Kui Xiao

IPC: C25D11/34 ,  C25D9/06 ,  B22F10/22 ,  B22F3/24 ,  B82Y30/00 ,  B82Y40/00

Abstract: The present disclosure provides a method of manufacturing a surface nanotube array of a laser-melted stainless steel, including a step of an anodic oxidation treatment on the stainless steel, which includes performing the anodic oxidation treatment on the stainless steel by applying a voltage between the stainless steel as an anode and a graphite as a cathode in a solution formed by using sodium dihydrogen phosphate, perchloric acid, and ethylene glycol as a solute, and deionized water as a solvent.

公开(公告)号：US10131995B2

公开(公告)日：2018-11-20

申请号：US14997290

申请日：2016-01-15

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Xiaogang Li ,  Chaofang Dong ,  Xuequn Cheng ,  Cuiwei Du ,  Kui Xiao

IPC: C09K15/30 ,  C23F11/00 ,  C23F11/10

Abstract: This disclosure relates to a preparation method of a low-pH controlled-release intelligent corrosion inhibitor. The low-pH controlled-release intelligent corrosion inhibitor comprises a hydrogel with low pH responsiveness and a corrosion inhibiting substance having the capacity of corrosion inhibition. That is, a corrosion inhibiting substance is wrapped in a low-pH sensitive hydrogel. The swelling degree of the pH sensitive hydrogel may be changed according to the amounts of monomers and crosslinking agents so as to control the releasing speed of the corrosion inhibiting substance. By the soaking experiment and the measurements of electrochemical polarization curves and alternating impedance spectra, the sensitive and long-lasting features of the low-pH controlled-release intelligent corrosion inhibitor are indicated. Therefore, the advantageous effects of this disclosure lies in that: 1) the system enables the releasing speed of the corrosion inhibiting substance to be controlled by pH; 2) the system enables long-lasting effect and high corrosion inhibition efficiency of the corrosion inhibiting substance; and 3) the system has broad applicability.