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However, some electroformed components are observed a number of pinholes and nodules due mainly to mass transfer limitation during the electrodeposition.
Our studies have shown that the electrolyte vacuum boiling electroforming process can generate the components with markedly improved surface quality (almost no pinholes and nodule) and desirable microstructures with fine grains and good compactness [7-11].

Through a large number of orthogonal experiments, the optimal calcination temperature is 500 ℃, and the calcination time is 2h; then change the doping amount of Ce3+ or Fe3+, temperature and the calcination time to do the orthogonal experiment again.
Analysis of SEM's characterization (a) 1:200, 000 (pure TiO2) (b) 1:2, 000, 000(Ce/TiO2) (c) 1:2, 000, 000 (Fe/TiO2) Fig.2 SEM pictures of nano-TiO2 under different conditions Fig.2Picture (a) shows that, at 500℃, pure TiO2 has appeared reunion phenomenon while its lattices are good; in Fig2picture (b), TiO2 doped with Ce shows a majority of crystal grains whose sizes are within the range of 10-30nm, and has relatively complete lattices, while at 550˚C, there are a few comparatively large reunion particles, the overall dispersion effect is relatively good, relatively playing its photocatalytic activity.

Unlike the conventional material-removal processing method, SLM is based on material incremental manufacturing (MIM) and has a number of advantages such as net-shape fabrication without the requirement of molds or dies, a high level of process flexibility, and a wide range of applicable materials [7].
The results of the investigation suggest that TiC is formed through a dissolution/precipitation mechanism by means of the heterogeneous nucleation of TiC and subsequent grain growth. 5µm 20µm Fig. 2.

The major peaks are matched with CCTO with ICDD file ref number 01-075-2188.
Ain, Investigation of Grain Size Effect on the Impedance of CaCu3Ti4O12 from 100 Hz to 1 GHz of Frequency, Adv.

Results and discussion The atmospheric plasma sprayed conventional ZrO2+Y2O3 – CoNiCrAlY thermal barrier coating system of the sample 1 shows a typical structure composed of pores and of considerable number of microcracks, especially at interfaces of individual splats [4].
Suspension plasma sprayed ceramic YSZ top coat (44 µm thick) of the sample 3 is characterized by nanometric to submicrometric size of pores and the microstructure is composed from very fine grains.

They maintained that the number of the unpaired d electrons are relevant to diamond tool wear.
Kang, Monocrystal Silicon Nanometric Grinding Process of grinding grain wear of the molecular dynamics simulation.

On the contrary, the toxicity of QAC is inversely proportional to the length of the carbon chain; it decreases as the number of carbon atoms in the radical increases [6].
Wollastonite of the Mivoll 10-97 brand (TU 577-006-40705684-2003) with a characteristic length-to-grain ratio of 15: 1 was used as a modifier [8].

In 200 B.C Chinese and Persian were also used simple windmills for pumping water and grinding grains [2].
They used Markov chain to determine the number of sub sections.

So far, there exist many research methods of display of crystal boundary, such as hydrocarbonylation, net pearlite method, heating and slow cooling method, grain boundary corrosion method, martensitic corrosion method and meshed cementation process and so on[1-6].
A large number of crystal cells with the same bits make up a crystal.

Debye-Scherrer analyses of the highest intensity (111) peak at full width at half maximum intensity (FWHM) shows grain size of ~41 nm, which means a crystal growth of b-SiC at 1200 °C.
Fig.4 (b) shows a large number of long fibers pulling out, and the surfaces of carbon fibers are retaining almost the original form, which means that the fiber/matrix interfacial bonding is moderate or even weak.