| CPC C03C 17/328 (2013.01) [B32B 7/06 (2013.01); B32B 15/04 (2013.01); B32B 17/06 (2013.01); B32B 17/10036 (2013.01); B32B 17/1055 (2013.01); B32B 17/10899 (2013.01); C03C 17/28 (2013.01); B32B 2457/20 (2013.01); C03C 2218/153 (2013.01)] | 10 Claims |

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1. A method of making an article comprising:
forming a coating layer, onto a first sheet bonding surface of a first sheet, by vapor depositing a precursor compound having a hydrogen and carbon content of greater than 90 weight percent; and
the coating layer comprising a polymerized hydrogenated amorphous hydrocarbon compound and a first coating layer bonding surface and a second coating layer bonding surface; and
wherein an intensity ratio (DIG ratio) of a peak (D band) appearing in a range of 1350 to 1400 cm−1 to a peak (G band) appearing in a range of 1530 to 1600 cm−1 of a Raman spectrum of the coating layer is in a range of about 0.5 to about 0.6.
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