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<strong>Fabrication of IR transparent zinc sulphide plate by chemical vapour deposition (CVD)</strong>

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Title Statement <strong>Fabrication of IR transparent zinc sulphide plate by chemical vapour deposition (CVD)</strong>
 
Added Entry - Uncontrolled Name Biswas, Papiya ; International Advanced Research Centre for Powder Metallurgy and New Materials (ARC I)
Ramavath, Pandu ; International Advanced Research Centre for Powder Metallurgy and New Materials (ARC I)
Rajeswari, Kotikalapudi ; International Advanced Research Centre for Powder Metallurgy and New Materials (ARC I)
Johnson, Roy ; International Advanced Research Centre for Powder Metallurgy and New Materials (ARC I)
 
Uncontrolled Index Term Chemical vapour deposition; IR transparent ZnS; Rayleigh number; Free energy; Transport phenomenon
 
Summary, etc. Recent developments in Chemical Vapour Deposition (CVD) processing with its inherent advantages provide a feasible route for producing high quality optically transparent ceramic materials. CVD process feasibility of the reaction between Zn and H<sub>2</sub>S in obtaining optical quality ZnS deposits are evaluated with respect to the free energy requirements. Rayleigh number (R<sub>a</sub>) of 10<sup>6 </sup>corresponding to laminar flow indicated optimum flow velocities during CVD processing. Deposits show desirable thickness uniformity of 0.55% per cm and were found to have a phase pure ZnS XRD phase. EBSD patterns exhibited a highly oriented columnar ZnS grains and the specimens have shown the theoretical transmission values in the IR ranges.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2016-12-28 10:50:00
 
Electronic Location and Access application/pdf
http://op.niscair.res.in/index.php/IJCT/article/view/5971
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 23, ##issue.no## 5 (2016): Indian Journal of Chemical Technology
 
Language Note en