火焰喷塑材料的研究进展

阐述了火焰喷塑技术的发展历程，介绍了尼龙11、聚醚醚酮、聚烯烃等几种火焰喷塑材料的物理、化学性能及最新研究进展；指出了该领域今后的研究方向。     

超音速火焰喷涂技术研究进展

介绍了一种超音速火焰喷涂技术的发展过程、工作原理和特点、涂层的应用以及未来的发展方向。该技术制备的涂层致密、氧化物含量极低，在耐磨、抗氧化、耐腐蚀和机械零件修复等领域得到了广泛的应用。     

超音速火焰喷涂技术的现状及展望

超音速火焰喷涂(HVOF)技术是一种可在表面高效率地形成涂层的工艺方法,该法具有火焰速度高,温度比等离子喷涂低,涂层结合强度高、致密性好、耐磨等优点.主要介绍了超音速火焰喷涂的原理、发展历程及研究现状,并展望了其未来发展趋势.     

火焰喷涂超高分子量聚乙烯/石墨复合涂层力学性能研究

在火焰喷涂超高分子聚乙烯（UHMWPE）／石墨（G）复合涂层配方中采用了偶联剂处理技术，并采用拉力试验机及红外光谱仪等对涂层结构与性能进行了研究。结果表明，偶联剂TPM的加入,，使复合涂层的力学性能得到了明显改善。当TPM用量为石墨的2％（质量比），WUHMWPE／WG＝100／20时，复合涂层综合性能较好，涂层与基体的结合强度为6.82MPa；综合自拉伸强度为32.79MPa。     

氧-乙炔火焰粉末喷涂技术

简要介绍了氧-乙炔火焰喷涂的设备、喷涂粉末、喷涂工艺以及应用实例,为正确使用该项工艺提供依据.     

热喷涂技术的发展

分析对比了各种热喷涂工艺的特点，叙述了当前热喷涂技术面临的主要问题，最后介绍了热喷涂技术在各种工业中的应用情况。     

超音速火焰喷涂技术研究进展

介绍了一种新型的超音速火焰喷涂技术--活性燃烧高速燃气喷涂(AC-HVAF),该工艺的喷涂过程对喷涂材料的氧化及热退化影响非常小,可以制备出极低氧化物含量和极高致密度的涂层,该涂层具有优越的耐磨损和耐腐蚀能力,同时其喷涂速度和沉积效率均优于传统超音速火焰喷涂(HVOF).     

吸热陶瓷涂层的火焰喷涂及其耐磨行为

对在钢材表面采用的氧乙炔火焰喷涂这一新型吸热陶瓷材料的耐磨性能及耐磨机理进行了试验研究结果表明，该涂层具有较低的孔隙率、较高的硬度和抗压强度，以及良好的耐磨性。其磨损机理主要有塑性涂抹、磨粒磨损和疲劳剥落。     

如何避免喷塑工件掉塑

1　掉塑发生机理环氧聚酯粉末依靠静电吸附到工件的磷化膜层后 ,在固化烘箱中产生熔融、胶化、流平、固化四个过程。其中 ,熔融、胶化、流平三个过程中的粉末出现液体特征 ,会渗入磷化膜层的孔洞中 ,从而使粉末层与磷化膜层紧密结合。如果在熔融、胶化、流平三个过程中粉末层不能与磷化膜层紧密结合 ,那么 ,工件在受到很小外力作用下会出现塑层脱离钢板磷化膜层的现象。2　掉塑的形式掉塑的形式分为局部轻微掉塑与大面积掉塑两种。局部轻微掉塑发生后塑层只有少量脱离 ,未脱落部分用针轻挑塑层不会继续脱落 ;大面积掉塑表现为少量塑层脱落 ,…     

静电粉末喷涂技术的研究与应用

试验研究静电粉末喷涂技术中影响沉积效率的主要因素，解决了快速换色的工艺方法。结果表明，尽管影响沉积效率的因素很多，但只要选择最佳的工艺参数和技术条件，就能获得满意的效果。     

再识热喷涂

概述了热喷涂技术在可持续发展中的特点和地位,提出了大力发展热喷涂产业的思考和建议.     

Effect of Flame Conditions on Crystalline Structure of TiO2 in Liquid Flame Spraying

Nanostructured TiO2 is a most promising functional ceramic owing to its potential utilization in photocatalytical, optical and electrical applications. Nanostructured TiO2 coating was deposited through thermal spraying with liquid feedstock. Two types of crystalline structures were present in the synthesized TiO2 coating including anatase phase and rutile phase.The effect of spray flame conditions on the crystalline structure was investigated in order to control the crystalline structure of the coating. The results showed that spray distance, flame power and precursor concentration in the liquid feedstock significantly influenced phase constitutions and grain size in the coating. Anatase phase was formed at spray distance from 150 to 250mm, while rutile phase was evidently observed in the coating deposited at 100 mm. The results suggested that anatase phase was firstly formed in the coating, and rutile phase resulted from the transformation of the deposited anatase phase. The phase transformation from anatase to rutile occurred through the annealing effect of spraying flame. The control of the phase formation can be realized through flame condition and spray distance.     

工艺参数对HVOF喷涂WC-Co涂层磨损性能的影响

采用滑动磨损试验机对不同工艺参数下HVOF喷涂WC-Co涂层进行滑动磨损试验,并分析了涂层的表面失效行为。氧气流量和燃气流量对涂层磨损性能的影响呈不同的变化规律,较小的氧气流量、适中的燃气流量和喷涂距离条件下制备的涂层磨损率较低。涂层滑动磨损失效具有解理断裂特征。失效过程中碳化物颗粒的剥落对涂层磨损起关键作用,涂层中的粘结相、孔隙对疲劳裂纹的扩展有很大的影响。     

氧乙炔火焰喷涂制备粉煤灰复合涂层的研究

用氧乙炔火焰喷涂在Q235钢表面制备粉煤灰复合涂层。采用SEM和XRD分析了涂层的界面形貌和物相组成,并测试了粉煤灰复合涂层的耐蚀性和耐磨粒磨损性能。结果表明,涂层表面致密,结合性良好,且有3Al2O3·2SiO2、Ca2SiO4、TiB2等新相产生;涂层具有良好的耐酸性和耐磨性,其耐酸性、耐磨粒磨损性分别比基体提高了11.8倍、7.67倍。     

Synthesis and Deposition of TiC-Fe Coatings by Oxygen-acetylene Flame Spraying

A simpler and more convenient method for producing wear-resistant, TiC-reinforced coatings were investigated in this study. It consists of the simultaneous synthesis and deposition of TiC-Fe materials by oxyacetylene flame spraying. Solid reagents bound together to form a single particle are injected into the flame stream where an in-situ reaction occurs. The reaction products are propelled onto a substrate to form a coating. Microstructural analyses reveal that TiC and Fe are the dominant phases in the coatings. The reaction between Ti and C happens step by step along with the reactive spray powder flight, and TiC-Fe materials were mainly synthesized where the spray distanceis 125～170 mm. The TiC-Fe coatings are composed of alternate TiC-rich and TiC-poor lamellae with different microhardness of 11.9～13.7 and 3.0～6.0 GPa, respectively. Submicron and round TiC particles are dispersed within a ductile metal matrix. The peculiar microstructure is thought to be responsible for its good wear resistance, which is better nearly five times than WC-reinforced cermet coatings obtained by traditional oxyacetylene flame spray.