Transparent Ceramic Materials &Technologies
| PI Details | Co-PI Details |
|---|---|
|
Dr. JD Sharma
Designation: Asso. Prof. |
| Funding Agency | Project Cost |
|---|---|
| Ministry of Human Resources Development (MHRD), New Delhi |
Rs. 1.25 Cr/- Amount Received till date (in Rs.) Rs. 1.25Cr |
| Start Date | Completion Date | Status |
|---|---|---|
| 2015-09-01 | 2021-09-30 | Completed |
Abstract
The project is synthesis sintering and characterization of sesquioxides like YAG and yttrium oxide ceramics, particularly in the field of advance ceramics. YAG and Y2O3 is known for its excellent chemical stability, high melting point, thermal conductivity, and transparency in a wide spectral range. The traditional method of growing single crystals of Y2O3 faces challenges due to its high melting point, so polycrystalline transparent ceramics (PTCs) are used as an alternative, offering advantages such as easy fabrication and the ability to create complex structures. To lower the sintering temperature sesquioxides could be doped with sintering additives in a limited quantity so as not interfere with basic properties of sesquioxides. To enhance and observe altering the physical and chemical properties sesquioxides could be doped with Rare earth elements (REEs) can be doped. The project is about the development and compilation of various studies that focus on doping Y2O3 with REEs like erbium (Er3+), ytterbium (Yb3+), samarium (Sm3+), and europium (Eu3+), which significantly affect the characteristics of the material.
| Manpower Sanctioned/Hired | Manpower Trained |
|---|---|
|
Ph.D Produced: 01 |
Equipment Sanctioned/Procured
|
Name of Equipment |
Make & Model |
Year of Purchase |
Cost |
Salient Features of Equipment |
Condition (Working /Not Working) |
|---|---|---|---|---|---|
|
Lyophilic Unit |
Southern Scientific Lab Instruments |
2018 |
3.17 Lakh |
Min Temperature: -40 ˚C Vacuum:0.001 m.bar
|
Working |
|
Glove Box |
Diksha Instruments |
2018 |
6.92 Lakh |
Inert atmospheric synthesis |
Working |
|
Vacuum Furnace |
Nabertherm |
2020 |
(~97 Lakhs) 104,512 Euro |
Max. Temperature: 2200 ˚C Inert atmospheric Programmable cooling rate |
Working |
|
02-Magnetic Stirrers |
Labman |
2021 |
49k |
RPM :2000 Heat temperature upto 150 ˚C |
Working |
Publications
List of Conference Publication Published in Proceedings under Project
|
Authors Name |
Title of Paper |
Journal Name |
Volume No. |
Page No. |
Year |
DOI Number |
|---|---|---|---|---|---|---|
|
Harshit Tripathi, Jagmohan Datt Sharma Sushil Kumar,Sumit Bhardwaj, |
Effect of La2O3 as Sintering Aid on the Structural, Mechanical & Electrical Properties of Y2O3 |
Materials Science & Engineering B (Under Review) |
- |
- |
- |
- |
|
Harshit Tripathi, Sushil Kumar, Rohit Kumar, Sumit Bhardwaj, Jagmohan Datt Sharma |
Structural, morphological and opto-electric properties of Y2−xYbxO3 (x = 0.0, 0.04, 0.08, 0.12) nanopowders for laser host ceramic material applications |
Journal of Materials Science: Materials in Electronics |
33 |
12157-12170 |
2022/5 |
|
|
Sushil Kumar, Harshit Tripathi, Jagmohan Sharma, Uma Batra |
Structural, morphological, and opto‐electrical properties of Y2‐xYbxO3 nanoparticles synthesized using co‐precipitation method |
International Journal of Applied Ceramic Technology |
18 |
12-23 |
2021/1
|
Output/Outcome of the Project
Output/Outcome of the project
- Synthesis of Y2O3 and YAG nanopowders with controlled morphology and thermal stability.
- Doping of Y2O3 and YAG nanopowders with Rare Earth Elements for thermal imaging and photoluminescence properties.
- Development of process prototypes to lower the sintering temperature of Y2O3 nanopowders foe opto electrical properties. The results reveals that (3 at.% La2O3 and ZrO2) have average grain size of the ceramic samples varies from 16.7 μm to 15.9 μm.
- High temperature sintered transparent Ceramic of Yb doped Y2O3 for Optical Applications The presence of strong absorption between 200 and 360 nm with maximum band gap value of 4.77 eV. The photoluminescence spectra shows characteristic peaks of violet, indigo, blue and green emission at 380 nm, 422 nm, 486 nm and 527 nm respectively.
- Nd substituted Yttria transparent ceramic for laser application in which The Fourier-transform infrared spectroscopy confirms the presence of metal oxide functional groups (Y-O and Yb-O) and vibrational bands corresponding to O-H vibration, C-O bending, and stretching modes in the samples. The band gap energy (Eg) is found to decrease from 5.14 eV to 3.60 eV for as per composition variation.
- Sintering Er: Y2O3 powders at low temperatures of 1650° under controlled atmosphere for producing ultra-high pure transparent ceramic.