A novel surface-repairing technique for gun bore

Abstract

A novel surface-repairing technique for gun bore was investigated, which was combined with the merits such as anti-erosion wear, damage-repairing, and etc. It was accomplished by adhering a special rare earth nanocomposite evenly to the micro-surface of gun bore. The effectiveness of this technique was approved by the target-firing using a domestic automatic rifle with chromium-coated bore. Its characteristics were discussed based on the surface analyses of the rifle bore by secondary ion mass spectrometry(SIMS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) analysis.

Keywords

rare earth nanocomposite / surface-repairing / gun bore

References

[1] LinS S. Chemical constituents of eroded gun surfaces [J]. Appl Surf Sci, 1984, 21(1–4): 112-124

[2] WuBin, XiaWei, TangYong, et al.. A review on thermal effects during the firing process and measures of their thermal control [J]. Acta Armamentarii, 2003, 24(4): 525-529(in Chinese)

[3] GriffinR B, PepeJ, MorrisC. Metallurgical examination of bore surface damage in a 5-inch gun[J]. Metallography, 1975, 8(6): 453-471

[4] LawtonB. Thermo-chemical erosion in gun barrels [J]. Wear, 2001, 250–251: 827-838

[5] ChungD Y, KongH, NamS H. A study on the precision wear measurement for a high friction and high pressurized gun barrel by using a diamond indenter[J]. Wear, 1999, 225–229: 1258-1263

[6] ChungD Y, KimH J, KimH N. A study on the erosion characteristics of the micropulsed plasma nitrided barrel of a rifle[A]. 19th International Symposium of Ballistics[C], 2001, Interlaken, Switzerland: 323-331

[7] SopokS, RickardC, DunnS. Thermal-chemical-mechanical gun bore erosion of an advanced artillery system part one: Theories and mechanisms[J]. Wear, 2005, 258: 659-670

[8] SopokS, RickardC, DunnS. Thermal-chemical-mechanical gun bore erosion of an advanced artillery system part two: Modeling and predictions[J]. Wear, 2005, 258: 671-683

[9] HirvonenJ K, DemareeJ D, MarbleD K, et al.. Gun barrel erosion studies utilizing ion beams[J]. Surf Coat Technol, 2005, 196: 167-171

[10] CoteP J, RichardC. Gas-metal reaction products in the erosion of chromium-plated gun bores[J]. Wear, 2000, 241: 17-25

[11] CoteP J, LeeS L, TodaroM E, et al.. Application of laser pulse heating to simulate thermomechanical damage at gun bore surfaces[J]. J Pressure Vessel Technol Trans ASME, 2003, 125(3): 335-341

[12] CoteP J, TodaroM E, KendallG, et al.. Gun bore erosion mechanisms revisited with laser pulse heating [J]. Surf Coat Technol, 2003, 163–164: 478-483

[13] MatsonD W, McClanahanE D, RiceJ P, et al.. Effect of sputtering parameters on Ta coatings for gun bore applications[J]. Surf Coat Technol, 2000, 133–134: 411-416

[14] FanXin-min, ChenJian-zhong, XuTian-xiang. Erosion resistance evaluation of three coatings[J]. Chinese Journal of Ballistics, 2000, 12(1): 65-67(in Chinese)

[15] YuXu-dong, YangJun-wei, WangCheng-tao, et al.. Tribological surface modification of piston and rings by rare earth self-lubrication process [J]. Tribology, 2002, 22(5): 364-367(in Chinese)

[16] YuXu-Dong, WuBing, SuBing, et al.. Microcracks repairing technique for gun barrel[J]. Trans Nonferrous Met Soc China, 2004, 14(S2): 219-221