Synthesis and processing of nanocrystalline powders for IR transparent windows

Mohit Jain, Ganesh Skandan, Amit Singhal, Dinesh Agrawal, Yi Feng, Joseph La Monica, J. Kirsch

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Polycrystalline infrared transparent materials with good optical and mechanical properties are needed for the fabrication of infrared windows and domes. We have developed a synthesis process to produce MgO nanopowders. The average aggregate size of powder is in the range of 150-160 nm, with a narrow aggregate size distribution. Additionally, a protocol for compaction of nanocrystalline powders to achieve high green density (>50% of theoretical density) and microstructural uniformity has been described, as these factors are critical to sinter compacts to theoretical density with minimum number of flaws. Some of the samples were hot pressed and subsequently hot isostatically pressed (HIPed) for complete densification. Processing parameters are discussed to achieve uniformly dense sample with high degree of translucency. Some of the fully densified samples had a grain size as low as 100-300 nm.

Original languageEnglish (US)
Article number24
Pages (from-to)217-226
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5786
DOIs
StatePublished - Oct 25 2005
EventWindow and Dome Technologies and Materials IX - Orlando, FL, United States
Duration: Mar 28 2005Mar 29 2005

Fingerprint

Nanocrystalline powders
Powder
Synthesis
Infrared radiation
Domes
Infrared
synthesis
Processing
Densification
infrared windows
Powders
Nanopowder
transparence
Compaction
Dome
Optical properties
Grain Size
densification
domes
Fabrication

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Jain, Mohit ; Skandan, Ganesh ; Singhal, Amit ; Agrawal, Dinesh ; Feng, Yi ; La Monica, Joseph ; Kirsch, J. / Synthesis and processing of nanocrystalline powders for IR transparent windows. In: Proceedings of SPIE - The International Society for Optical Engineering. 2005 ; Vol. 5786. pp. 217-226.
@article{de124b197bdd4951a3689f3a90dec5f9,
title = "Synthesis and processing of nanocrystalline powders for IR transparent windows",
abstract = "Polycrystalline infrared transparent materials with good optical and mechanical properties are needed for the fabrication of infrared windows and domes. We have developed a synthesis process to produce MgO nanopowders. The average aggregate size of powder is in the range of 150-160 nm, with a narrow aggregate size distribution. Additionally, a protocol for compaction of nanocrystalline powders to achieve high green density (>50{\%} of theoretical density) and microstructural uniformity has been described, as these factors are critical to sinter compacts to theoretical density with minimum number of flaws. Some of the samples were hot pressed and subsequently hot isostatically pressed (HIPed) for complete densification. Processing parameters are discussed to achieve uniformly dense sample with high degree of translucency. Some of the fully densified samples had a grain size as low as 100-300 nm.",
author = "Mohit Jain and Ganesh Skandan and Amit Singhal and Dinesh Agrawal and Yi Feng and {La Monica}, Joseph and J. Kirsch",
year = "2005",
month = "10",
day = "25",
doi = "10.1117/12.604433",
language = "English (US)",
volume = "5786",
pages = "217--226",
journal = "Proceedings of SPIE - The International Society for Optical Engineering",
issn = "0277-786X",
publisher = "SPIE",

}

Synthesis and processing of nanocrystalline powders for IR transparent windows. / Jain, Mohit; Skandan, Ganesh; Singhal, Amit; Agrawal, Dinesh; Feng, Yi; La Monica, Joseph; Kirsch, J.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5786, 24, 25.10.2005, p. 217-226.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Synthesis and processing of nanocrystalline powders for IR transparent windows

AU - Jain, Mohit

AU - Skandan, Ganesh

AU - Singhal, Amit

AU - Agrawal, Dinesh

AU - Feng, Yi

AU - La Monica, Joseph

AU - Kirsch, J.

PY - 2005/10/25

Y1 - 2005/10/25

N2 - Polycrystalline infrared transparent materials with good optical and mechanical properties are needed for the fabrication of infrared windows and domes. We have developed a synthesis process to produce MgO nanopowders. The average aggregate size of powder is in the range of 150-160 nm, with a narrow aggregate size distribution. Additionally, a protocol for compaction of nanocrystalline powders to achieve high green density (>50% of theoretical density) and microstructural uniformity has been described, as these factors are critical to sinter compacts to theoretical density with minimum number of flaws. Some of the samples were hot pressed and subsequently hot isostatically pressed (HIPed) for complete densification. Processing parameters are discussed to achieve uniformly dense sample with high degree of translucency. Some of the fully densified samples had a grain size as low as 100-300 nm.

AB - Polycrystalline infrared transparent materials with good optical and mechanical properties are needed for the fabrication of infrared windows and domes. We have developed a synthesis process to produce MgO nanopowders. The average aggregate size of powder is in the range of 150-160 nm, with a narrow aggregate size distribution. Additionally, a protocol for compaction of nanocrystalline powders to achieve high green density (>50% of theoretical density) and microstructural uniformity has been described, as these factors are critical to sinter compacts to theoretical density with minimum number of flaws. Some of the samples were hot pressed and subsequently hot isostatically pressed (HIPed) for complete densification. Processing parameters are discussed to achieve uniformly dense sample with high degree of translucency. Some of the fully densified samples had a grain size as low as 100-300 nm.

UR - http://www.scopus.com/inward/record.url?scp=26844572952&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=26844572952&partnerID=8YFLogxK

U2 - 10.1117/12.604433

DO - 10.1117/12.604433

M3 - Conference article

AN - SCOPUS:26844572952

VL - 5786

SP - 217

EP - 226

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

M1 - 24

ER -