Laser Ionization Time of Flight Mass Spectrometry Study of Silicon Oxycarbide Glasses

For the first time, a laser ionization time of flight mass spectrometry (LI-TOFS) characterization has been performed on silicon oxycarbide glasses obtained by pyrolysis of sol–gel precursors. This technique allows to desorb intermediate range mesounits from the network, and to determine their mass and atomic identity precisely. It is therefore complementary to all the other analysis typically performed on SiOC glasses as it leads to collect information on a length scale which is usually difficult to probe: the medium range. The results indicate the presence, in the SiOC glasses, of mixed silicon oxycarbide units together with pure silicate mesounits (SiO2 and SiO3).

[1]  F. Babonneau,et al.  On the shrinkage during pyrolysis of thin films and bulk components: The case of a hybrid silica gel precursor for SiOC glasses , 2012 .

[2]  P. Kroll.  Searching insight into the atomistic structure of SiCO ceramics , 2010 .

[3]  Tobias Melz,et al.  Piezoresistive Effect in SiOC Ceramics for Integrated Pressure Sensors , 2010 .

[4]  Lorenzo Pavesi,et al.  White Luminescence from Sol–Gel‐Derived SiOC Thin Films , 2009 .

[5]  K. Kanamura,et al.  Preparation of Microporous Si-O-C Composite Material and Its Lithium Storage Capability , 2009 .

[6]  F. Chi.  Carbon‐Containing Monolithic Glasses via the Sol‐Gel Process , 2008 .

[7]  H. Kleebe,et al.  SiOC ceramic with high excess free carbon , 2008 .

[8]  R. Raj,et al.  Preparation of Ultrathin‐Walled Carbon‐Based Nanoporous Structures by Etching Pseudo‐Amorphous Silicon Oxycarbide Ceramics , 2006 .

[9]  R. Raj,et al.  A Model for the Nanodomains in Polymer‐Derived SiCO , 2006 .

[10]  R. Raj,et al.  The role of carbon in unexpected visco(an)elastic behavior of amorphous silicon oxycarbide above 1273 K , 2005 .

[11]  H. Kleebe,et al.  Systematic Structural Characterization of the High-Temperature Behavior of Nearly Stoichiometric Silicon Oxycarbide Glasses , 2004 .

[12]  D. Stentz,et al.  Studies of oxide glass structure using laser ionization time of flight mass spectrometry , 2003 .

[13]  D. Stentz,et al.  Analysis of the structure of lead borosilicate glasses using laser ionization time of flight mass spectroscopy , 2001 .

[14]  D. Stentz,et al.  Determination of the mesostructure of lead borate glasses using laser photoionization mass spectroscopy , 2000 .

[15]  Carlo G. Pantano,et al.  Silicon Oxycarbide Glasses , 1999 .

[16]  P. Mutin,et al.  Preparation and structure of silicon oxycarbide glasses derived from polysiloxane precursors , 1997 .

[17]  Antonella Glisenti,et al.  XPS characterization of gel-derived silicon oxycarbide glasses , 1996 .

[18]  Robert H. Doremus,et al.  Silicon oxycarbide glasses: Part II. Structure and properties , 1991 .