Plasma technologies generation

The potential of nonthermal plasma technologies for the utilization of C02 has been addressed in this chapter. Nonthermal plasma pathways have many advantages over conventional catalysis, notably that they can be generated under ambient... 

To treat thermo-sensitive powders, some authors [1-2] have coupled two technologies a cold plasma to generate active species in a gas and a fluidized bed to promote the gas-particles contact. Nitrogen cold remote plasmas allow grafting nitrogen on surface and then for instance, to increase the hydrophilicity of polymer powders [1-3]. 

Recently, energy-efficient and powerful plasma-cherrrical systems have been developed based on microwave discharges. The skin effect in this case permits simultaneous achievement of a high level of electron derrsity and a high electric field (and hence a high electron temperatirre as well) in the relatively cold gas. Microwave plasma technology permits derrse ( e = 10 cm ) non-eqrrihbrirrm plasmas to be generated T = 1-2 e ( = 3000-... 

Hydrogen reduction of chlorides in thermal plasma can be apphed not only to produce powder of individual metals but also to produce different intermetalhc compounds. The composition of the generated crystals copies the composition of the chloride mixture in the gas phase. This effect permits the production of the intermetallic compounds with the required composition. Refractory intermetallic compounds based on niobium and vanadium were synthesized from their chlorides (conversion close to 100%) in a hydrogen plasma jet generated by RF-ICP discharge (Bashkirov Medvedev, 1968). The reaction products were crystallized on a substrate sustained at a temperature of about 1000°C. The plasma-metallurgical technology is proven to be effective in the synthesis of vanadium-Hsilicon... 

Explanations of the plasma technology and its application in textiles have been carried out by means of fundamental characteristics, types, generation and textile-surface treatment. 

The use of variable chemistry in these systems allows versatility by optimizing reactive gases for the specific application. Next generation atmospheric plasma systems are being engineered for other performance features of vacuum plasma technologies, such as plasma-enhanced chemical vapor deposition (PECVD). 

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