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Introduction UCI technique is used for hardness measurement on machined surfaces in hard to reach areas, measurement layers, mainly fine-grained materials [2].
Number of measurements - five measurements taken in an area of approximately 645 mm2 shall constitute one test.
a) b) Fig. 3 Microstructure of used steels: a) Steel XSG, b) Steel HR 45 Table 1 Mechanical properties, grain size and indent size of used steels Steel Rp0.2 [MPa] Rm [MPa] A80 [%] HV 1 n t [mm] grain size [µm] indent size [µm] XSG 177 286 47.2 120 0.211 1.95 22 112 HR 45 360 Re 449 27 179 0.139 1.80 8 91 Results Distance between indents: Indentations on sheet surface without zinc coating were realized with different spacing between the indents centers (0.2; 0.3; 0.5 and 0.7 mm).

PLA grain (Mn＝2×105, Cargill company, USA), PBS grain(Mn＝2×105, Showa Highpolymer Japan), PCL grain(Mn＝2×105, Showa Highpolymer Japan), Electronic balance(0.0001g,AL104, METTLER company), Infrared spectral photometer（IRPRESTIGE-21, SHIMADZU, Japan）, Polarized light microscope(B×51，OLYMPUS Japan).
If the degradation of polymer cleaved randomly in the middle of the molecular chain, the end group will be oxygenated and the relative number of the carbonyl group will increase.

The Fe3Al based alloy (FA06Z) showed microstructure with elongated grains having up to 500 µm in the direction of rolling and up to 200 µm in the transverse direction.
The Fe-Al based alloy (Fe-40Al-1C) also showed microstructure with coarse grains elongated in the direction of rolling.
Grain boundaries were decorated by second phase particles.
The fracture surfaces contained secondary cracks oriented perpendicularly to the fracture surface, the highest number of these secondary cracks was found in specimens tested at 400°C.

A number of experimental methods have been suggested for measuring the thermal properties of various thin films.
According to these results of the XRD analysis, it can be claimed that increased thermal conductivity of the AlN thin film at a large film thickness is primarily due to the increase in the grain size which is generally proportional to the thickness of a thin film if other process conditions are kept unchanged [5].
The images reveal that Au, Al0.97Ti0.03, and Sn thin films have crystalline structures and the grain sizes on the surface are approximately 200~2000 nm.
The thermal conductivity of the AlN thin film decreases rapidly as the film thickness, and thus the grain size, is reduced.

The grains were observed by means of scanning electron microscopy (SEM, JSM-5800, JEOL).
This is because the two additives can suppress overgrowth of grains.
On the other hand, some grains in the pure BST60 ceramics grow abnormally (see Fig. 2(a)). 20 30 40 50 60 70 80 Intensity (a.u.) 2θ θ θ θ (degree) BST60 BST60+1wt% Al2O3 BST60+1wt% Ga2O3 BST60+ 1wt% In2O3 Non-crystalline is found in In2O3-doped BST60 (see Fig. 2(d)) because In2O3 possesses a low melt point.
The deformation of oxygen octahedron does not play an important role because the number of O 2 vacancies is not as many as that in Al3+ and Ga 3+-doped BST system.

As fig 2 shows that the grain size of the clastic and ooidic bauxite are coarse, and the massive and earth bauxite are fine.
Coarse clastic is widely spread in the study area, according to grain size and roundness the coarse clastic can be further divided into three types, breccia, gravel and detritus.
In a word, the distribution of the bauxite is controlled by grain size, from south to north, the thickness of the 4 different natural types of the bauxite gradually increased or decreased.
Fig 4 B content of all samples varying with depth in different cores Table 1 B values of Ore-bearing strata (ppm) Sample number Depth (m) Lithologys B(ppm) ZK14904-5 386.98 Dark grey oolitic bauxite 144 ZK14904-7 387.93 Light grey clastic bauxite 81.5 ZK14904-9 388.60 Light grey clastic bauxite 55.5 ZK14904-21 394.25 Light grey massive bauxite 55.9 ZK14904-22 395.30 Light grey massive bauxite 96.1 ZK14904-23 396.49 Light grey massive bauxite 90.6 ZK14904-24 397.60 Light grey massive bauxite 103 ZK202-2 199.60 Light grey clastic bauxite 92.5 ZK202-3 201.70 Light grey massive bauxite 78.0 ZK202-4 202.30 Light grey massive bauxite 85.4 ZK202-5 203.50 Dark grey massive bauxite 71.5 ZK202-6 204.8 Dark grey massive bauxite 81.8 ZK3402-3 297.70 Dark grey massive bauxite 124 ZK3402-4 298.26 Light grey oolitic bauxite 65.2 ZK3402-6 299.60 Light grey clastic bauxite 50.0 ZK3402-8 300.00 Light grey clastic bauxite 46.5 ZK3402-9 300.30 Light grey clastic bauxite 45.8

Dielectric properties and their voltage dependence are expected to depend strongly on the microstructural parameters of ceramics such a grain size, mechanical stress, porosity etc.
Lattice vibration and dielectric studies on ST ceramics revealed a correlation between the average grain size and the transition from the classical paraelectric to the quantum paraelectric state [4].
In order to clarify the microstructure and grain size effect on dielectric behaviour of ST ceramics, an attempt is made in this work to synthesize ST powders by sol-gel method.
Cell parameter and average crystallite size Journal Title and Volume Number (to be inserted by the publisher) under different conditions (symbol * denotes extra phase).

Fig.1 shows that hot heavy (TGA) curve was two period of obvious weightlessness, in 40~120 ℃ between, mainly for TiO2/BC water loss, take off with (ethanol, acetic acid, etc) cause; the second period between 120~440 ℃, mainly for TiO2/BC of the alcohol and acetic acid decompose combustion; In 440 ℃ no significant loss after the quality, to suppress in the roasting process of grain growth, sample will also reduce shrinkage, which reduces the TiO2/BC particles reunion.
Along with the increase of temperature roasting, sample diffraction peak gradually become sharp, grain gradually increases; When baking temperature of 700 ℃, TiO2 sample of titanium ore and rutile sharp in coexistence, with sharp titanium ore main type phase. 900 ℃, XRD in rutile type all the characteristics of TiO2 crystal diffraction peak (2θ=27.4°), show that TiO2 sample with sol-gel method all change into rutile type.
Fig.5 shows that atlas of 3330 cm-1 and 1693 cm-1 place respectively for catalyst surface O-H telescopic be vibrating peaks and bending vibration peak; 1041.5 cm-1 for C-O-Ti absorption peaks, may have originated with the contact of TiO2/BC interface in C-O-Ti key generation; 667 cm-1 and 485 cm-1 for Ti-O near telescopic vibrating peaks, because of the BC added cause Ti-O telescopic vibration to lower peak wave number mobile.
(2) The complex particle reunion is low degree, grain size small, surface much larger, and specific surface area, pore structure, the contact interface in a C-O-Ti key generation

Physical and chemical properties of bioglasses produced by sol-gel method including grain morphology and surface semi-quantitative microanalysis were described in [11, 12], while the results of in vitro cytotoxicity were presented in publication [13] and Fig. 3.
Table 1: Chemical compositions of bioglasses Bioglass Content, [wt %] SiO2 Al2O3 CaO P2O5 Ag2O Z-01 99,2 0,8 - - - Z-2 98,2 0,8 - - 1,0 Z-5 95,7 0,8 - - 3,5 Z-8 89,0 7,5 - - 3,5 B-I 60,0 - 37,0 2,0 1,0 Scanning microscopy was used to the microstructure study and observations of the grain size and morphology of the produced bioglasses and analyses with a transmission electron microscope (TEM) was carried out to obtain images of HAADF particles.
Results and discussion Based on the received SEM images, morphology of the obtained material was assessed and it was found that the obtained bioglasses with the symbols Z-01, Z-2 and Z-5 contain spherical grains with the diameters within the range from 200 [nm] to 600 [nm].
The results received with TEM for powders Z-8 and B-I show very slight excretions, regularly distributed in the matrix, as well as a small number of larger excretions.

Different from the (M=Mn) alloys, the as-spun M1 and M4 (M=Cu) alloys exhibit an entire crystalline structure, and some crystal defects such as subgrains and grain boundaries can be seen clearly from the amplified morphologies of Fig.2 (c) and (d), which conforms well to the observations of XRD depicted in Fig.1.
The beneficial action is undoubtedly associated with the refined grains and the formed secondary phases generated by M (M=Mn, Cu) substitution.
The large number of interfaces and grain boundaries available in the nanocrystalline materials provide easy pathways for hydrogen diffusion and accelerate the hydrogen absorbing/desorbing process [8].