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Hot Dip Al Si Mg Cu Sc Alloy Coated Steel
Abstract: ABSTRACT HOT-DIP AL-SI-MG-CU-SC ALLOY COATED STEEL The present disclosure relates to a coated steel, comprising a steel substrate (1) and a hot-dip Al-Si-Mg-Cu-Sc (Aluminum-Silicon-Magnesium-Copper-Scandium) alloy coating on the steel substrate. The hot-dip Al-Si-Mg-Cu-Sc alloy coating includes Iron-Aluminum-Silicon (Fe-Al-Si) layer (2) on steel substrate (1); Aluminum-Iron-Silicon (Al-Fe-Si) compound layer (3) on Iron-Aluminum-Silicon (Fe-Al-Si) layer (2); Magnesium-Silicon-Copper (Mg-Si-Cu) compound layer (4) on Aluminum-Iron-Silicon (Al-Fe-Si) compound layer (3); and Upper a–Al rich matrix phase layer (5).
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
16 March 2019
Publication Number
38/2020
Publication Type
INA
Invention Field
METALLURGY
Status
Email
delhi@lsdavar.in
Parent Application
Patent Number
Legal Status
Grant Date
2023-07-26
Renewal Date
Applicants
TATA STEEL LIMITED
BISTUPUR, JAMSHEDPUR, JHARKHAND-831001, INDIA.
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
RAFI MARG, NEW DELHI-110001, INDIA.
Inventors
1. RAJESH SHYAM PAIS
Tata Steel Ltd., Bistupur, Jamshedpur, Jharkhand-831001, India.
2. MAHESH GULAB WALUNJ
CSIR- National Metallurgical Laboratory
Jamshedpur-831007, India.
3. GOPI KISHOR MANDAL
CSIR- National Metallurgical Laboratory
Jamshedpur-831007, India.
4. SUMAN KUMARI MISHRA
CSIR- National Metallurgical Laboratory Jamshedpur-831007, India.
5. VIKAS CHANDRA SHRIVASTAVA
CSIR- National Metallurgical Laboratory
Jamshedpur-831007, India.
6. LOKESH CHANDRA PATHAK
CSIR- National Metallurgical Laboratory Jamshedpur-831007, India.
Specification
Claims:WE CLAIM:
1. A coated steel, comprising
a steel substrate (1); and
a hot-dip Al-Si-Mg-Cu-Sc (Aluminum-Silicon-Magnesium-Copper-Scandium) alloy coating on the steel substrate, the hot-dip Al-Si-Mg-Cu-Sc alloy coating comprises:
Iron-Aluminum-Silicon (Fe-Al-Si) layer (2) on steel substrate (1);
Aluminum-Iron-Silicon (Al-Fe-Si) compound layer (3) on Iron-Aluminum-Silicon (Fe-Al-Si) layer (2);
Magnesium-Silicon-Copper (Mg-Si-Cu) compound layer (4) on Aluminum-Iron-Silicon (Al-Fe-Si) compound layer (3); and
Upper a–Al rich matrix phase layer (5).
2. The coated steel as claimed in claim 1, wherein the upper a–Al rich matrix phase layer (5) comprises silicon rich dendrites, Mg2SiCu phases, and Al3Sc precipitates.
3. The coated steel as claimed in claim 1, wherein hot-dip Al-Si-Mg-Cu-Sc alloy coating comprises the following composition by weight:
14% < Silicon (Si) < 21 %,
1.0%
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 201931010291-IntimationOfGrant26-07-2023.pdf | 2023-07-26 |
| 1 | 201931010291-STATEMENT OF UNDERTAKING (FORM 3) [16-03-2019(online)].pdf | 2019-03-16 |
| 2 | 201931010291-POWER OF AUTHORITY [16-03-2019(online)].pdf | 2019-03-16 |
| 2 | 201931010291-PatentCertificate26-07-2023.pdf | 2023-07-26 |
| 3 | 201931010291-PETITION UNDER RULE 137 [24-07-2023(online)].pdf | 2023-07-24 |
| 3 | 201931010291-FORM 18 [16-03-2019(online)].pdf | 2019-03-16 |
| 4 | 201931010291-Proof of Right [24-07-2023(online)].pdf | 2023-07-24 |
| 4 | 201931010291-FORM 1 [16-03-2019(online)].pdf | 2019-03-16 |
| 5 | 201931010291-Response to office action [24-07-2023(online)].pdf | 2023-07-24 |
| 5 | 201931010291-FIGURE OF ABSTRACT [16-03-2019(online)].jpg | 2019-03-16 |
| 6 | 201931010291-DRAWINGS [16-03-2019(online)].pdf | 2019-03-16 |
| 6 | 201931010291-Correspondence to notify the Controller [21-07-2023(online)].pdf | 2023-07-21 |
| 7 | 201931010291-FORM 13 [13-07-2023(online)].pdf | 2023-07-13 |
| 7 | 201931010291-DECLARATION OF INVENTORSHIP (FORM 5) [16-03-2019(online)].pdf | 2019-03-16 |
| 8 | 201931010291-POA [13-07-2023(online)].pdf | 2023-07-13 |
| 8 | 201931010291-COMPLETE SPECIFICATION [16-03-2019(online)].pdf | 2019-03-16 |
| 9 | 201931010291-RELEVANT DOCUMENTS [13-07-2023(online)].pdf | 2023-07-13 |
| 9 | 201931010291-FORM-26 [13-05-2019(online)].pdf | 2019-05-13 |
| 10 | 201931010291-OTHERS [20-08-2021(online)].pdf | 2021-08-20 |
| 10 | 201931010291-US(14)-HearingNotice-(HearingDate-24-07-2023).pdf | 2023-07-11 |
| 11 | 201931010291-FER.pdf | 2021-10-18 |
| 11 | 201931010291-FER_SER_REPLY [20-08-2021(online)].pdf | 2021-08-20 |
| 12 | 201931010291-FER.pdf | 2021-10-18 |
| 12 | 201931010291-FER_SER_REPLY [20-08-2021(online)].pdf | 2021-08-20 |
| 13 | 201931010291-OTHERS [20-08-2021(online)].pdf | 2021-08-20 |
| 13 | 201931010291-US(14)-HearingNotice-(HearingDate-24-07-2023).pdf | 2023-07-11 |
| 14 | 201931010291-FORM-26 [13-05-2019(online)].pdf | 2019-05-13 |
| 14 | 201931010291-RELEVANT DOCUMENTS [13-07-2023(online)].pdf | 2023-07-13 |
| 15 | 201931010291-COMPLETE SPECIFICATION [16-03-2019(online)].pdf | 2019-03-16 |
| 15 | 201931010291-POA [13-07-2023(online)].pdf | 2023-07-13 |
| 16 | 201931010291-DECLARATION OF INVENTORSHIP (FORM 5) [16-03-2019(online)].pdf | 2019-03-16 |
| 16 | 201931010291-FORM 13 [13-07-2023(online)].pdf | 2023-07-13 |
| 17 | 201931010291-Correspondence to notify the Controller [21-07-2023(online)].pdf | 2023-07-21 |
| 17 | 201931010291-DRAWINGS [16-03-2019(online)].pdf | 2019-03-16 |
| 18 | 201931010291-FIGURE OF ABSTRACT [16-03-2019(online)].jpg | 2019-03-16 |
| 18 | 201931010291-Response to office action [24-07-2023(online)].pdf | 2023-07-24 |
| 19 | 201931010291-Proof of Right [24-07-2023(online)].pdf | 2023-07-24 |
| 19 | 201931010291-FORM 1 [16-03-2019(online)].pdf | 2019-03-16 |
| 20 | 201931010291-PETITION UNDER RULE 137 [24-07-2023(online)].pdf | 2023-07-24 |
| 20 | 201931010291-FORM 18 [16-03-2019(online)].pdf | 2019-03-16 |
| 21 | 201931010291-POWER OF AUTHORITY [16-03-2019(online)].pdf | 2019-03-16 |
| 21 | 201931010291-PatentCertificate26-07-2023.pdf | 2023-07-26 |
| 22 | 201931010291-STATEMENT OF UNDERTAKING (FORM 3) [16-03-2019(online)].pdf | 2019-03-16 |
| 22 | 201931010291-IntimationOfGrant26-07-2023.pdf | 2023-07-26 |
Search Strategy
| 1 | SearchStrategy-201931010291E_19-01-2021.pdf |