主要热喷涂技术（The main thermal spraying techniques） |
| 时间：2017-07-09 16:13:44 来源：文献 作者：Adam |
热喷涂工艺通常按照所用的热源和选用材料的形状进行分类。目前，热喷涂技术主要有等离子喷涂、电弧喷涂及火焰喷涂等。
Thermal spray techniques are classified according to its heat source and shape of selected materials. Nowadays, thermal spraying technology mainly include plasma spraying, arc spraying, flame spraying and so on.
1 等离子喷涂
由于等离子喷涂几乎可喷涂各种材料，且工艺较简单，涂层与基体结合良好，故得到了广泛应用。但喷涂工艺相关大量参数的控制较为复杂，成为等离子喷涂获得优质涂层的主要障碍。过去研究的主要方面之一是提高喷枪性能， 目前研究的是涂层形成的过程，包括涂层间的结合、涂层与基体的结合、气孔率及未融粒子的控制等。这些研究的最终目标是为等离子喷涂的全过程控制及自动化奠定础。
Plasma spraying
Plasma spraying is widely used due to it can spray many kinds of materials, process is relatively simple, and good combination of coating and matrix. The main obstacle to obtain high quality coating of plasma spraying is that the complicated control of the large number of related parameters of spraying process. One of the main aspects of the past research is to improve the performance of thermal spray equipment,
T he present study is the process of coating formation, including combination between the coatings, combination of coating and substrate, porosity, not-melt particle control and so on. The ultimate goal of these studies is that led to the whole process control and automation of plasma spraying.
2 电弧喷涂
电弧喷涂是一种经济、可靠的热喷涂工艺，喷涂材料一般只限于金属和合金，可对多种基体进行喷涂。应用范围包括耐磨涂层、结构防腐涂层和磨损零件的修复等，今后还可能应用于封严领域。当前的研究工作主要集中在如何实现喷涂过程的自动控制。
Arc spraying
Arc spray is an economic and reliable thermal spray technology, generally speaking, spraying material is limited to metals and alloys, spray on a variety of substrates. Its applications include wear-resistant coating, structure anticorrosion coating and wear parts repair, etc, and it may also be applied to seal field in the future. The current research focus on how to realize the automatic control of spraying process.
3 火焰喷涂
传统的火焰喷涂是用可燃性气体的燃烧火焰作热源，将喷涂材料加热至熔化并喷射到基体表面上形成涂层。高速氧燃料喷涂(HVOF)是火焰喷涂的一个主要技术领域。
Flame spraying
The traditional flame spraying is made of combustible gas combustion flame as a heat source, heating the flame spraying powder to melt and spray on the substrate surface. High speed oxy-fuel spraying (HVOF) is one of the main flame spraying technology.
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