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By A. K. Haghi

Chemical engineering is the department of engineering that bargains with the applying of actual technology, and existence sciences with arithmetic, to the method of changing uncooked fabrics or chemical compounds into extra beneficial or beneficial kinds. This e-book studies study concerning chemical undefined, chemical engineering and different attached components.

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Applicattion of Dend drimers on samples weere padded separately in aqqueous baths with w finishingg chemicals Dyed cotto (D DWR, DWOR R and FWOR R). All produccts were appllied to the faabrics with thhe pad-cure m method, including full immeersion into the bath to a wett pick-up of 600-80% at 20°C C and were cuured at 140-15 50 °C for 1200 seconds. Thee application conditions c forr the three testted finishes arre reported in Table 3: for allproducts a tw wo different cooncentrations were w investigaated, taking innto account thee concentratioon ranges recom mmended by supplier.

TiN = dark, ZrO2 = grey, WC = white (originating from the milling medium). Table 1. B. 1. ZrO2 Coating The HIPed 2 mol% yttria stabilized ZrO2-NbC (60/40 vol%) samples before and after capsule removal are shown in Figure 5. The ZrO2 capsules, were removed by Electro Discharge Machining (EDM). m). m) and can not be processed by ED [14]. Hence, in order to be able to remove the capsule by EDM, a 2 24 Sedigheh Salehi, S Omer Van V der Biest, Jef Vleugells et al. rootating diamon nd wheel was used to makee a groove in the ZrO2 coatting down to the t electrocoonductive ZrO O2-based com mposite materiial.

HIPing of Encapsulated Electrically Conductive ZrO2-based Composites 27 Table 4. 4 4. CONCLUSION ZrO2-based composites with 40 vol% TiN, NbC or WC addition could be successfully HIPed (sinter canning) using a ZrO2 coating. In order to facilitate the ZrO2 capsule removal after HIPing, a thin BN powder coating was applied in-between the composite compact and the ZrO2 powder coating. The result was successful, since the capsule could be manually removed easily and the mechanical properties of the HIPed materials (90 min at 1420°C of which 30 min at 170 MPa Ar) were similar to those of hot-pressed grades (60 min at 1450°C and 30 MPa).

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