Brass filaments

The patented wire is again cleaned with acid, rinsed, and brass plated just before the second drawing. The brass acts as a drawing lubricant and as well as an adhesive to mbber. The brass composition is typically 60—70% copper with 2inc as the remainder. The patented, brass-plated wire is drawn into filaments of 0.15—0.38 mm diameter. 

The thermal conductivity (TC) detector consists of four filaments embedded in a stainless-steel or brass block which acts as a heat sink. The TC detector is extremely sensitive to temperature changes and should be insulated to prevent temperature excursions during the time in which it takes to complete an adsorption or desorption measurement. Long-term thermal drift is not significant because of the calibration procedure discussed in the next section and therefore, thermostating is not required. 

De La Rive invented a new -> electroplating method to deposit gold onto brass and silver, and designed one of the first incandescent lamps using a platinum filament in a partially evacuated glass tube. He also designed an electrochemical - capacitor (condenser), 1843. 

There are two aspects to the study of fiber friction interfiber friction or cohesion, and the friction between the fiber or filament and solids, such as ceramics, chromes. PTFE. stainless steels, brass and other alloys, etc. 

Swiss company Elektrisola Feindraht AG (Elektrisola, 2015) fabricates metal monofilaments that can be blended with all sorts of fibers or that can be directly used in weaving and knitting. Importantly, the material has different electrical properties (see Stoppa and Chiolerio, 2014). The products range from copper (Cu) and silver-plated copper (Cu/Ag) filaments, to brass (Ms) and silver-plated brass (Ms/ Ag) filaments, to aluminum (Al) filaments, to copper-clad aluminum filaments (Elektrisola, 2015). 

Stuffer box method The crimping unit consists of two feed roUs and a brass tube stuffer box. By compressing the yam into the heated stuffer box, the individual filaments are caused to fold or bend at a sharp angle, while being simultaneously set by a heating device. 

The fibers morphology was evaluated in a scanning electron microscope JEOL JSM5310 with a tungsten filament operating at lOkV, employing low vacuum technique and secondary electron detector. Samples were dispersed on a brass support and fixed with a double face 3M tape. 

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