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Title:
METHOD FOR CONTINUOUS LASER-SHOCK MELTING AND INJECTION OF FINE PARTICLES BY FORMATION OF INJECTION FORCE WITH LASER-SHOCK ENERGY
Document Type and Number:
WIPO Patent Application WO/2019/033460
Kind Code:
A1
Abstract:
A method for continuous laser-shock melting and injection of fine particles by formation of an injection force with laser-shock energy, wherein a continuous laser beam is transmitted through a constraining layer to scan a composite layer precoated on the surface of a material to be modified and composed of a mixture of a binder capable of inducing a laser shock wave effect and fine particles to be melted and injected. Parameters such as melting points and boiling points of the binder, the material to be modified, and the fine particles to be melted and injected are appropriately coordinated, realizing gasification of the binder through induction by the continuous laser beam to form a laser shock wave so as to inject the fine particles to be melted into a molten pool on the surface of the material to be modified, thereby forming a fine particle-reinforced composite material layer in situ. With the method, the fine particles and the material to be modified in the composite material layer obtained on the surface of the material to be modified are metallurgically bonded, resolving the technical issue in the prior art of difficulty in melting and injecting fine particles. Further, the method features deeper injection depth, a small microstructure, uniform distribution of reinforcing particles, and is not restricted by the plasticity of the material to be modified.

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Inventors:
WANG HONGYU (CN)
ZHAO QIAN (CN)
YUAN XIAOMING (CN)
WANG HAN (CN)
ZHANG XIANG (CN)
WU BO (CN)
XU BAOWEN (CN)
LIU GUILING (CN)
Application Number:
PCT/CN2017/099224
Publication Date:
February 21, 2019
Filing Date:
August 28, 2017
Export Citation:
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Assignee:
UNIV JIANGSU (CN)
International Classes:
C23C24/10
Foreign References:
CN101717912A2010-06-02
CN104308361A2015-01-28
CN103103523A2013-05-15
CN102191497A2011-09-21
CN105734554A2016-07-06
US4981716A1991-01-01
Other References:
LI PENGFEI ET AL.: "Process Optimization and Microstructure of Cerium Oxide Modified Al-Si Coatings by Laser Melt Injection", TRANSACTIONS OF MATERIALS AND HEAT TREATMENT, vol. 38, no. 7, 31 July 2017 (2017-07-31), pages 145 - 150
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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