Influence of process parameters on microcapsules loaded with n-hexadecane prepared by in situ polymerization

2009 ◽  
Vol 155 (1-2) ◽  
pp. 457-465 ◽  
Author(s):  
F. Salaün ◽  
E. Devaux ◽  
S. Bourbigot ◽  
P. Rumeau
Keyword(s):  
Process Parameters ◽  
In Situ Polymerization ◽  
Influence Of Process Parameters

Influence of Process Parameters on Microstructure of Reaction Plasma Cladding TiC-Fe-Cr Coating

2021 ◽  
Vol 1027 ◽  
pp. 170-176
Author(s):  
Li Mei Wang ◽  
Jun Bo Liu ◽  
Jun Hai Liu
Keyword(s):  
Process Parameters ◽  
Composite Powder ◽  
Early Stage ◽  
Influence Of Process Parameters ◽  
Synthetic Process ◽  
Plasma Cladding ◽  
Cr Coating ◽  
Composition Process ◽  
Cladding Layers

In order to improve the quality and properties of the coating, a certain amount of Ti was added to the plasma cladding Fe-Cr-C coating in the early stage. And Fe-Cr-C-Ti composite powder was prepared by precursor carbonization-composition process. In situ synthesized TiC-Fe-Cr coatings were fabricated on substrate of Q235 steel by plasma cladding process with Fe-Cr-C-Ti composite powder. Microstructure of the coating with different process parameters, including cladding current, cladding speed, number of overlapping cladding layers, were analyzed by scanning electron microscope (SEM). The results show that the structure of the TiC-Fe-Cr coating is greatly affected by the fusion current, the cladding speed and the overlapping cladding process. In this test, when the cladding current of 300A and the cladding process parameter of the cladding speed of 50 mm/min are clad with three layers, a well-formed and well-structured TiC-Fe-Cr coating can be obtained. Which are the best synthetic process parameters in this test.

scholarly journals Processing-structure-property correlations of in situ Al/TiB2 composites processed by aluminothermic reduction process

2018 ◽  
Vol 25 (5) ◽  
pp. 869-879
Author(s):  
A.S. Vivekananda ◽  
S. Balasivanandha Prabu ◽  
R. Paskaramoorthy
Keyword(s):  
Process Parameters ◽  
Particle Distribution ◽  
Reduction Process ◽  
Xrd Analysis ◽  
Parent Material ◽  
Structure Property ◽  
Influence Of Process Parameters ◽  
Average Hardness ◽  
Al Matrix

AbstractThis paper reports the influence of process parameters on the size and distribution of in situ titanium diboride (TiB2) particles within the aluminium (Al) matrix. TiB2 particles were formed as a result of the in situ reaction of potassium hexafluorotitanate (K2TiF6) and potassium tetra fluoroborate (KBF4) with molten Al. Two process parameters, namely, the addition time (AT) and holding time (HT) of precursor salts, were considered. The Al/TiB2 composites were produced by allowing the in situ reaction to occur at various ATs (10, 20, and 30 min) and HTs (20, 30, and 40 min). Results showed that the formation of TiB2 was confirmed by XRD analysis. The microstructure, TiB2 particle size, hardness, yield strength (YS), and ultimate tensile strength (UTS) were strongly affected by the said process parameters. The variations in hardness and UTS were highly consistent with those found in the microstructure of the composites. Compared with the Al parent material, the increase in the average hardness and UTS of the composite were 51% and 44%, respectively. This improvement was achieved for the composite sample fabricated with 20 min of AT and 30 min of HT. At this condition, the composite displayed near-uniform particle distribution.

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