Corrosion Resistant Zinc Chromium Alloy Coatings And Methods Thereof

Abstract: The present disclosure provides electroplating compositions comprising zinc sulphate, chromium (III) sulphate or chromium (III) chloride, complexing agent, boric acid, potassium chloride and optionally sodium sulphate for depositing zinc-chromium (Zn-Cr) coatings on steel. The disclosure also provides methods for preparing the electroplating compositions and a method for depositing the electroplating compositions on steel substrates. The compositions and methods of the present disclosure provide a higher rate of deposition and coatings with a superior corrosion resistance.

Patent Information

Application #

Filing Date

30 September 2022

Publication Number

14/2024

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Applicants

TATA STEEL LIMITED

Jamshedpur, 831001, Jharkhand, India

Inventors

1. D.VIJAY KUMAR

C/o Tata Steel Limited, Jamshedpur – 831 001, Jharkhand, India.

2. VIJAYKUMAR IJERI

GTZ (INDIA) PVT LTD, 9 Brabourne Rd, Murgighata, B.B.D. Bagh, Kolkata, West Bengal 700001, India

3. ATANU BANERJEE

C/o Tata Steel Limited, Jamshedpur – 831 001, Jharkhand, India.

4. DEBABRATA PRADHAN

C/o Tata Steel Limited, Jamshedpur – 831 001, Jharkhand, India.

5. AMAR NATH BHAGAT

C/o Tata Steel Limited, Jamshedpur – 831 001, Jharkhand, India.

6. MRINAL SAHA

GTZ (INDIA) PVT LTD, 9 Brabourne Rd, Murgighata, B.B.D. Bagh, Kolkata, West Bengal 700001 , India.

Specification

Description:See attached , Claims:See attached

Documents

Application Documents

#	Name	Date
1	202231056332-STATEMENT OF UNDERTAKING (FORM 3) [30-09-2022(online)].pdf	2022-09-30
2	202231056332-REQUEST FOR EXAMINATION (FORM-18) [30-09-2022(online)].pdf	2022-09-30
3	202231056332-POWER OF AUTHORITY [30-09-2022(online)].pdf	2022-09-30
4	202231056332-FORM 18 [30-09-2022(online)].pdf	2022-09-30
5	202231056332-FORM 1 [30-09-2022(online)].pdf	2022-09-30
6	202231056332-DRAWINGS [30-09-2022(online)].pdf	2022-09-30
7	202231056332-DECLARATION OF INVENTORSHIP (FORM 5) [30-09-2022(online)].pdf	2022-09-30
8	202231056332-COMPLETE SPECIFICATION [30-09-2022(online)].pdf	2022-09-30
9	202231056332-FORM-8 [04-10-2022(online)].pdf	2022-10-04
10	202231056332-Proof of Right [06-03-2023(online)].pdf	2023-03-06
11	202231056332-FORM-26 [24-07-2025(online)].pdf	2025-07-24