Background: Erosive wear causes increase in the bore diameter of firearms barrels and nozzles. Most responsible factors for this erosion are friction and heat generated during the shot. Protection from erosive wear is very important for gun tube life cycle, and various protection methods are used: adding phlegmatizers in gunpowder composition or applying protective layers on the gun bore inner surface.

Objective: In this research, a possibility is examined to protect the surface of a nozzle exposed to gunpowder erosion applying a layer of tungsten disulfide fullerene-like nanoparticles, IF-WS2, known as outstanding solid lubricant of a great mechanical resistance.

Methods: Nanoparticles on the nozzle surface before and after the gunfire tests were observed using scanning electron microscopy/energy dispersive X-ray spectroscopy. Gunfire tests were performed on designed erosion device. Temperatures in the defined position near the affected surface were measured with thermocouples and compared for the nozzles with and without nanoprotection, as well as the nozzle mass loss after each round.

Results: For the sample with IF-WS2 lower temperatures after firing and lower mass losses were observed. Mass loss after first round was 25.6% lower for the sample with protective nanoparticles layer, and the total mass loss was about 5% lower after five rounds. After the first round the nozzle without IF-WS2 was heated up to a temperature which was for 150.8°C higher than the nozzle with IF-WS2.

Conclusion: Protective function of IF-WS2 is the most pronounced for the first round. The observed results encourage its further application in firearms gun bores protection.

背景：腐蚀磨损会导致枪支枪管和喷嘴的内径增大。造成腐蚀的最主要因素是击球过程中产生的摩擦和热量。防止腐蚀磨损对于枪管的生命周期非常重要，并且使用了多种保护方法：在火药成分中添加增敏剂或在枪膛内表面上施加保护层。

目的：在这项研究中，研究了一种可能性，即使用一层二硫化钨富勒烯状纳米粒子IF-WS2保护被暴露于火药侵蚀的喷嘴表面，该粒子被称为具有出色机械阻力的出色固体润滑剂。

方法：使用扫描电子显微镜/能量色散X射线光谱法观察枪击试验前后喷嘴表面的纳米粒子。在设计的腐蚀装置上进行了开火测试。使用热电偶测量受影响表面附近特定位置的温度，并比较带有或不带有纳米保护的喷嘴以及每轮后喷嘴的质量损失。

结果：对于具有IF-WS2的样品，煅烧后的温度较低，质量损失较小。具有保护性纳米颗粒层的样品在第一轮后的质量损失降低了25.6％，在五轮后，总质量损失降低了约5％。在第一轮之后，将不带IF-WS2的喷嘴加热到比带IF-WS2的喷嘴高150.8°C的温度。

结论：IF-WS2的保护功能在第一轮中最为明显。观察到的结果促进了其在枪械枪膛防护中的进一步应用。