Surface nanometer crystallizing modification |
Title： |
| Surface nanometer crystallizing modification |
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Application Number： |
200510011856 |
Application Date： |
2005/06/03 |
Announcement Date： |
2005/12/28 |
Pub. Date： |
2007/03/14 |
Publication Number： |
1712549 |
Announcement Number： |
1304604 |
Grant Date： |
2007-3-14 |
Granted Pub. Date： |
2007-3-14 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C21D 7/04 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Li Dongmei, Pan Feng, Wen Shengping, Zeng Fei |
Key Words： |
Surface, nanometer crystallizing, modification |
Abstract： |
A modifying process of preface nano-crystal. It contains steps as follow. First, deposit a layer of no-crystal alloy membrane on the surface of workpiece. Second, put the workface in hydraulic house between -20�� and 60��. Apply a content pressure with hydraulic device, add a sine or cosine pressure. Nano-particle can be separated from no-crystal alloy membrane after a moment. Crystal particle with high hardnessl and strength move the no-crystal layer. The process can improve corrosion resistance, surface property and impact properties. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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