Developing a technology that increases the service life of valve seats in CNG/LNG-powered vehicles requires the appropriate selection of material and its application technology. Commercially used valve seat materials show accelerated wear under operating conditions, especially in natural gas vehicle engines. The authors developed a new material and technological concept to protect the valve seat in CNG/LNG-powered vehicles. Two materials were used in the research: Stellite 6 alloy and Fe\(_{3}\)Al intermetal. A commonly used material for valve seats of combustion engines is Stellite 6. The Fe\(_{3}\)Al is the new proposed material coating for the protection of the valve seats of internal combustion engines. The article compares the abrasive wear resistance of these materials. The abrasion tests were performed on a T-11 pin-on-disc tester, and the counter-sample was steel S235JR. The test conditions were similar to those prevailing during the operation of the valves in the head of the internal combustion engine, without the influence of temperature. The results indicate that the Fe3Al intermetallic compound is characterised by a lower coefficient of friction and wear intensity than Stellite 6. The results of exploitation tests confirm that the Fe\(_{3}\)Al phase is a prospective material to be used as a protective material on the valve seat of vehicles. The authors made a mathematical model for the wear of the newly created surface layers and proposed hypotheses regarding the wear mechanisms of these layers.

开发一种可延长 CNG/LNG 动力车辆阀座使用寿命的技术需要适当选择材料及其应用技术。商业使用的阀座材料在工作条件下会加速磨损，特别是在天然气汽车发动机中。作者开发了一种新的材料和技术概念来保护 CNG/LNG 动力车辆的阀座。研究中使用了两种材料：Stellite 6 合金和 Fe \(_{3}\) Al 金属间化合物。内燃机阀座常用的材料是 Stellite 6。 Fe \(_{3}\)铝是一种新提出的用于保护内燃机阀座的材料涂层。文章比较了这些材料的耐磨料磨损性能。磨损试验在 T-11 销盘式试验机上进行，对照样品为钢 S235JR。测试条件与内燃机头部阀门运行时的条件相似，不受温度影响。结果表明，Fe3Al金属间化合物具有比Stellite 6更低的摩擦系数和磨损强度。开发试验结果证实，Fe \ (_{3}\)Al相是一种很有前景的汽车阀座保护材料。作者为新创建的表面层的磨损建立了数学模型，并提出了有关这些层的磨损机制的假设。