Chemical heat source comprising metal nitride, metal oxide and carbon.

摘要

A chemical heat source (20) comprising metal nitride, metal oxide and carbon, particularly useful in smoking articles, and methods of making the heat source are provided. The metal nitride of the heat source has an ignition temperature substantially lower than conventional carbonaceous heat sources, while at the same time provides sufficient heat to release a flavored aerosol from a flavour bed (21) for inhalation by a smoker. Upon combustion the heat source produces virtually no carbon monoxide. The metal nitride is prepared by pre-forming the starting materials into a desired shape with at least one fluid passage (22), and converting them to metal nitride in situ, without substantially altering the shape of the starting materials.