Cobalt-base alloy gun barrel study

Rosset, William S. de; Montgomery, Jonathan S.

doi:10.1016/j.wear.2014.05.001

Cited by 22 publications

(4 citation statements)

References 5 publications

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“…Co-based alloy liners in gun barrels were tested for the erosion and wear properties of Co-based alloy by the U.S. Army Laboratory [12]. Firing test was carried out on the prepared cobalt-based alloy liners to test their wear properties.…”

Section: Introductionmentioning

confidence: 99%

Erosion behaviour of cobalt-based coatings with different carbide contents under high-speed propellant airflow

Men

Tao

Guo

et al. 2020

Surface Engineering

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Three different cobalt-based alloy coatings were prepared on the surface of PCrNi3MoVA steel by plasma transferred arc method by adjusting the contents of Cr, W, and C. An accelerated erosion test was performed on the coatings under high-pressure hot airflow environment generated by propellant combustion in gun bore. Scanning electron microscopy and X-ray diffractometry were used to analyse the microstructure of the three coatings before and after erosion. The thermal behaviour of the three coatings was analysed by differential scanning calorimetry. Results show that erosion mainly occurs between the dendrites on the surface of the coating, manifested by eutectic melting erosion and carbide cracking. As the contents of Cr, W, and C decrease, the amount of carbides formed in the coating decreases, the erosion behaviour of the coating is significantly weakened, and the erosion resistance is highly improved.

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Section: Introductionmentioning

confidence: 99%

Erosion behaviour of cobalt-based coatings with different carbide contents under high-speed propellant airflow

Men

Tao

Guo

et al. 2020

Surface Engineering

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“…To inhibit gun tube wear and erosion, domestic and foreign scholars have proposed many possible methods including the coatings of inner bore of barrel, optimization of shape and cartridge belt material of artillery, manufacturing technology of composite pipe, cooling technology of barrel, barrel self-repair technology, low temperature propellant and inhibitor additives technology [1][2][3][4][5][6][7][8]. Among them, the inhibitor additives technology, a kind of simple and effective method, has caught more and more attention.…”

Section: Introductionmentioning

confidence: 99%

Inhibitor performance and the preparation study of urea formaldehyde resin matrix composite particle

Lin¹,

Yan²,

Li³

et al. 2016

Proceedings of The6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016)

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Abstract. In order to improve the service life of weapons, an erosion additives of urea formaldehyde(UF) resin matrix composite particle is prepared by using in-situ polymerization method. The morphology composite particle is represented through scanning electron microscope, and the thermal analysis method is utilized to determine the organic and inorganic components proportion of erosion inhibitors. Finally, a contrasting ablation tube test is made to test its inhibitor performance. The experimental results show that the prepared inhibitor has a good particle dispersion and uniformity. The allocation ratio of organic and inorganic components is about 5.38:1. Compared to erosion inhibitor efficiency of standard propellant, that of the prepared erosion inhibitor can reach 17.56%. The application of this type of erosion inhibitor can decrease the ablative properties of the propellant, which is expected to reduce the erosion problems of high energy propellant.

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“…Cobalt-chromium alloys have shown great promise as liner materials in recent work. 8,9 Unfortunately, there are no commercially available tubes made from these alloys in the specific sizes that were required. At first it was decided to use the coldspray process to fabricate tubes made of Biodur * in-house at ARL.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Tests of M240 Machine Gun Barrels Lined with Stellite 25

Rosset¹,

Fudger²

2016

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Cobalt-base alloy gun barrel study

Cited by 22 publications

References 5 publications

Erosion behaviour of cobalt-based coatings with different carbide contents under high-speed propellant airflow

Erosion behaviour of cobalt-based coatings with different carbide contents under high-speed propellant airflow

Inhibitor performance and the preparation study of urea formaldehyde resin matrix composite particle

Fabrication and Tests of M240 Machine Gun Barrels Lined with Stellite 25

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