Research Progress on Life-extension of Gun Barrel Based on Coating Modification
Although the relevant performance indicators of various artillery equipment have been sig-nificantly improved in recent years,the development of artillery is still limited by the service life of gun bar-rel.Nowadays,improving the firepower and extending the service life of artillery have become a hotspot for researchers.Therefore,more strict requirements are put forward on the ablation-and wear-resistance of the gun barrel,which has been the focus of the study on the longevity of the gun barrel.It is an effec-tive method to improve the performance and to prolong the service life of the gun barrel by changing the material and the structure of the gun barrel.The development and recent advances in coating modifica-tion of gun barrel bore are summarized in this paper,and the performance requirements and modification related problems of the gun barrel bore are pointed out.The research progress and properties of Cr coat-ing,Ta coating and new ceramic coatings are introduced emphatically.Then,advantages and disadvan-tages of various coatings are comparatively analyzed so that to provide reference for further research on life extension technology for gun barrel.Besides,the significant improvement the resistance to ablation,oxidation and wear of coatings prepared by electroplating and magnetron sputtering are introduced em-phatically.The comprehensive analysis shows that the Cr coating and Ta coating prepared by electroplat-ing and magnetron sputtering respectively have good resistance to ablation,oxidation and wear,which are the current and future research hotspots.Meanwhile,the new ceramic materials also show their ad-vantages,namely,they present properties similar to the previous two coatings.It is also the development direction of surface modification of gun barrel bore in the future.
万方数据
维普
