Carbonation reaction of (Ca, Mg)O protective layer on plasma display panel | Zendy

Motoyama Yasushi | Zendy; Kato Daisuke | Zendy; Saito Nobuo | Zendy; Seki Masahiko | Zendy

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Carbonation reaction of (Ca, Mg)O protective layer on plasma display panel

Author(s) -

Motoyama Yasushi,

Kato Daisuke,

Saito Nobuo,

Seki Masahiko

Publication year - 2013

Publication title -

journal of the society for information display

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.578

H-Index - 52

eISSN - 1938-3657

pISSN - 1071-0922

DOI - 10.1002/jsid.148

Subject(s) - carbonation , plasma display , power consumption , annealing (glass) , plasma , materials science , layer (electronics) , chemical engineering , analytical chemistry (journal) , chemistry , composite material , electrode , environmental chemistry , power (physics) , thermodynamics , physics , quantum mechanics , engineering

We have been applying a low discharge voltage (Ca, Mg)O protective layer to plasma display panels to reduce their power consumption. However, (Ca, Mg)O is highly reactive with CO 2 , and the resulting carbonate formation during high‐temperature panel sealing in air impairs the low discharge voltage characteristic. We investigated the mechanism of the carbonation reaction that occurs on a (Ca, Mg)O surface during annealing in air at 450°C and found that the CO 2 diffuses through the formed CaCO 3 layer and that a (Ca, Mg)O + CO 2 → CaCO 3 + MgO reaction then occurs. This carbonation reaction evidently stops when the growing MgO finally forms a layer at all boundaries between the CaCO 3 and (Ca, Mg)O regions.

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