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    Basic Information

Technology developed: Bimodal Structure Based Thermal Barrier Coating Composition, Process for Preparation Thereof, and Substrate Coated Therewith (TP19768452788)
Category: Technology Service/Know how
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Kantesh Balani IIT Kanpur Material Science and Engineering Professor
Alok Bhadauria IIT Kanpur Material Science and Engineering Ph.D. Student
Shipra Bhajpai IIT Kanpur Material Science and Engineering Ph.D. Student
Ambreen Nisar IIT Kanpur Material Science and Engineering Ph.D. Student
Ashutosh Tiwari REC banda
Anup Kumar Keshri IIT Patna Professor
Technical Application Area: Chemicals & Materials Science
If 'Other', please specify:
Please give more details of new technical application area:
Organization(s):
Indian Institute of Technology (IIT) Kanpur
Affiliated Ministry: SERB, DST, Govt. of India
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Yes
Does the technology have export potential? Yes
Category of Technology developed: Immediate Deployment
Stage of Development: Field Test
Please describe in detail including the TRL Level:
The plan is being developed

    Abstract:

Applications: Plasma sprayed alumina is an ideal material for top coat of thermal barrier coatings owing to its low thermal conductivity and low coefficient of thermal expansion. However, its poor mechanical properties result in the coating failure due to delamination. Herein, a novel methodology is introduced to improve the mechanical properties of top-coat where bimodal microstructure (nano region and micro region) in the plasma sprayed coating is designed via spray drying of nano alumina with Yttria stabilized Zirconia (8YSZ) and Carbon Nanotubes (CNT) reinforcement prior to plasma spraying. Increased hardness and fracture toughness by 57 percent with bimodal microstructure is observed leading to enhanced structural integrity. Improved mechanical properties (hardness and fracture toughness) enhances the structural integrity of the coatings and thus delayed failure. The potential use of this invention or methodology is in providing the thermal insulation to the hot sections of gas turbine engines without delamination.
Advantages: Alumina based thermal barrier coatings with superior mechanical properties are the need of the hour. Introduction of bimodal microstructure along with the 8YSZ and CNT reinforcements have enhanced the mechanical behavior of these coatings by 57 percent which makes them a viable candidate for TBCs application into the gas turbine engines, turbine blades for aerospace and automotive industries

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Imported Raw Materials:
Raw Materials Year ITC-HS Code
NA
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
NA
Existing R&D Facilities used:
Facilities Year ITC-HS Code
NA

   Patents & Publications:

Patents:
Filed Patents (No.) Granted Patents (No.) Year
1 0 NA
Publications:
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees? Praxair Surface Technologies, Metallisation Ltd., TST Engineered Coating Solutions, Air Products and Chemical Inc
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Yes
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
Yes
      Submitted by: J.G. Rao Date of Submission: 21-3-2023



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