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Microstructural evaluation of the castings (Fig 5a) showed a globular primary grain structure and a very fine eutectic.
Although the X-ray radiography did not show 1 2 any defects in the region from which the specimens were obtained a number of the tensile specimens failed prematurely during the tests.

When the as-synthesized powder was thermally treated at 250 o C (Fig. 1(a)), fine grain substructure was observed, corresponding to gold particles located at the core of PS-PVP micelle.
The optical properties of photoelectrocatalysts are very important, because they represent the number of photons absorbed.

Table.1 Mix proportion of concrete Specimen Number Cementing materials (kg/m3) W/B Sand ratio (%) Water reducer (%) Cement Limestone powder Titanium slag Lithium slag Silica ash K 100 0 0 0 0 0.23 40 0.9 ST1 80 10 10 0 0 0.23 40 1.4 ST2 70 10 20 0 0 0.23 40 1.4 SG1 85 10 0 0 5 0.23 40 1.4 SG2 80 10 0 0 10 0.23 40 1.4 SG3 75 10 0 0 15 0.23 40 1.5 Result and Discussions Sulphuric Acid Erosion Resistance of Limestone Powder-Titanium Slag Concrete.
The reasons can be attributed to as follows: first, the super-fine limestone powder, titanium slag and silica ash can fill in pore structure and interspaces among cement grains [5].

Colloid solution was prepared by mixing the solution of titanium tetrachloride, ruthenium trichloride and concentrated hydrochloric acid (Ti, Ru atomic number ratio of 7:3).
The grain size of MWCNTs calculated according to the Scherrer formula was 19.59 nm.

The electrical and thermal properties of the ferrites depend on preparation method, chemical composition and grain size, frequency and temperature [2].
The precipitates were thoroughly washed a number of times with distilled water.

Fig. 1(d) shows the number of needle-like cores reduces and the left needle-like cores have the trend of polymerizing into granular cores.
The Cr diffuses outward the grains plentifully after a period of time to replace the Fe in former oxide with the oxide of Cr.

It has been widely recognized that this decrease in flow stress is caused by the interaction between the heavy flow of the conductive electrons and the various dislocations in metal grains.
Acknowledgment This work was result of SEED Research Program in KITECH (Project number: ER130008).

Therefore, simulation can reduce the number of tests and test cost
(In Chinese) [8] D.Li: The Grain Refining Processing of Ti-6Al-4V Using Step by Step Rolling Mill (MS.

Table 1 Chemical composition of the test materials Sample number #0 #1 #2 Boron content, [%] 0 0.56 1.23 A solidification test was conducted using a DSC (STA449C, Netzsch).
Austenitic dendrites were not clear, and bundles of eutectic boride structures appeared all over the austenite grain boundary with breaks in only some localities.

Large numbers of coal fly ash (CFA) were produced in electric power plants in the world every year.
It can be observed from micrographs of modified CFA that there were some regular cubic particles and their grain diameter was smaller compared with commodity zeolite 4A.