Title:
NICKEL-CONTAINING HIGH-TOUGHNESS CONTROLLABLY DEGRADABLE MAGNESIUM ALLOY MATERIAL, PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/082781
Kind Code:
A1
Abstract:
The present disclosure provides a nickel-containing high-toughness controllably degradable magnesium alloy material, a preparation method therefor and use thereof, and relates to the technical field of magnesium alloys. The magnesium alloy material comprises the following components in percentage by mass: 0.3 to 8.5% of Ni, 0.5 to 28% of RE, with the balance being Mg and unavoidable impurities. RE represents rare earth elements. By adding Ni and RE elements to introduce an Mg12RENi-type long-period phase, an Mg2Ni phase and an MgxREy phase, the magnesium alloy material provided by the present disclosure significantly improves mechanical properties of the alloy material, the tensile strength being up to 510 MPa. At the same time, the presence of the Mg12RENi-type long-period phase and Mg2Ni phase enables the alloy material to be controllably degradable, and enables the degradation rate to be adjustable between 360 and 2400 mm/a. Downhole fracturing tools manufactured by using the magnesium alloy alleviates the technical problem existing in current downhole tools and satisfy the requirements in the field of oil and gas exploitation.
Inventors:
WANG JINGFENG (CN)
GAO SHIQING (CN)
LIU SHIJIE (CN)
WANG KUI (CN)
PAN FUSHENG (CN)
GAO SHIQING (CN)
LIU SHIJIE (CN)
WANG KUI (CN)
PAN FUSHENG (CN)
Application Number:
PCT/CN2019/094183
Publication Date:
April 30, 2020
Filing Date:
July 01, 2019
Export Citation:
Assignee:
UNIV CHONGQING (CN)
International Classes:
C22C23/06; C22C23/00; C22F1/06
Foreign References:
| CN104328320A | 2015-02-04 | |||
| CN103981417A | 2014-08-13 | |||
| CN105316550A | 2016-02-10 | |||
| JP2008127639A | 2008-06-05 | |||
| CN109295368A | 2019-02-01 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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