Abstract: Cold thermal chemical vapor deposition coatings, articles, and processes are disclosed. Specifically, a cold thermal chemical vapor deposition process includes positioning an article, heating a precursor gas to at least a decomposition temperature of the precursor gas to produce a deposition gas, introducing the deposition gas to a coating vessel, and depositing a coating from the deposition gas onto the article within the coating vessel. The article remains at a temperature below the decomposition temperature throughout the introducing and depositing of the deposition gas. The coating on the article has a gradient formed by the depositing of the coating having no flow for a period of time. The coated article includes a thermally-sensitive substrate (the thermally-sensitive substrate capable of being modified by a temperature of 300 degrees Celsius) and a coating the thermally-sensitive substrate.

Abstract: A sabot comprising a substantially cylindrical body having an outside diameter, a receiving end, and a loading end located opposite the receiving end. The outside diameter is complementary to the inside diameter of the rifled bore in which the sabot is positioned during use. Located between the receiving end and the loading end of the sabot is a partition. Formed at the receiving end is a mouth for a receiving chamber. The receiving chamber extends from the receiving end to the partition. Formed at the loading end is a lip for a cupped recess. The cupped recess extends from the loading end to the partition. Annularly disposed about the cylindrical body and positioned between the receiving chamber and the loading end is at least one lubricating groove.