UC知道吐血悬赏！急求高手帮忙翻译
来源：百度知道 编辑：UC知道 时间：2024/05/17 20:56:11
液体燃料-压缩空气超音速火焰喷涂又称为HVAF（Hypersonic Velocity Air-Fuel的简称），是20世纪八十年代末九十年代初美国的Browing先生开发的新型超音速火焰喷涂工艺，它是利用压缩空气代替氧气，液体燃料代替气体燃料，在燃烧室内或在特殊的喷嘴中燃烧膨胀产生的高温燃烧焰流，并使其沿喷嘴喷出，获得超音速火焰射流。由于HVAF自身特点和良好的涂层性能使其成为超音速火焰喷涂新的发展趋势，本文应用HVAF技术在Q235钢基体表面制备Ni60、Ni-WC和Co-WC涂层，通过微观金相组织观察、显微硬度、孔隙率、结合强度以及磨损等实验手段测试涂层性能，探讨HVAF喷涂技术。较低的焰流温度，较高的粒子飞行速度，使得粒子在高温状态下停留时间较短，减少过熔化以及高温氧化、分解等反应，最大程度的保留了粒子本身的物理、化学性能，是HVAF喷涂工艺获得良好性能的主要原因。
Liquid fuel - compressed air HVOF also known as the HVAF (Hypersonic Velocity Air-Fuel acronym), the 20th century the late 1980s and early 1990s, the United States Browing development of the new HVOF process, it is to use Compressed air instead of oxygen, fuel gas instead of liquid fuel in the combustion chamber or in special nozzles in the expansion of the high-temperature combustion flame burning flow and to make it out along the nozzle, the flame was supersonic jet. As HVAF its own characteristics and good performance coatings HVOF to become the new trend of development, this paper HVAF in Q235 steel surface of the substrate Ni60, Ni-WC and Co-WC coating, through microscopic observation of the microstructure , Microhardness, porosity, combining strength and wear testing, and other means of coating performance, HVAF of spraying technology. Yan lower-temperature, high speed flight particles, making high-temperature particles in the state at a shorter time, reduced melting and high-