Abstract
The tungsten-type delay composition is composed of tungsten powder, oxidizing agent and binder, but the tungsten powder will be pre-oxidized after long-term storage, which deteriorates the combustion performance of the tungsten-type delay composition. Therefore, it is necessary to improve the oxidation resistance of tungsten powder. Single crystal tungsten powder (SCTP) is successfully prepared through hydrogen reduction at high temperature and short time, and anti-oxidative single crystal tungsten powder (ASCTP) is obtained by adopting carbonization with a carbon source of gas phase (Carbon monoxide), which enables fuller and more uniform reactions. The TEM results show that the surface of the SCTP is coated by the tungsten carbide, which forms synaptic structures on the surface of the SCTP to protect the SCTP from oxidation by surface modification. As a result, it has been confirmed through TG-DSC tests, oxidation experiments and related electrochemical tests that the oxidation resistance performance of the ASCTP is substantially improved compared with that of the SCTP.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Refractory Metals and Hard Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
