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Materials and Methods The specimens used in this research were Ti-6Al-4V plates (15.5 mm x 4 mm x 0.6 mm).
Macaluso, Titanium dental implants hydrophilicity promotes preferential serum fibronectin over albumin competitive adsorption modulating early cell response, Materials Science and Engineering: C (2020) 111307
Kalbacova, Biological evaluation of ultra-fine titanium with improved mechanical strength for dental implant engineering, Journal of materials science 51 (2016) 3097-3110
Sidhu, Evolution of surface modification trends in bone related biomaterials: A review, Materials Chemistry and Physics 233 (2019) 68-78
Hüttig, Surface characteristics of dental implants: A review, Dental Materials 34 (2018) 40-57.

The spent Li-ion battery contains not only LiCoO2 as anode material but also other materials, such as lithium cobalt oxide, lithium hexafluorophosphate, organic carbonate, polyethylene, carbon materials, copper foil and aluminum foil and so on[1,2,3].
The broken materials were treated in ultrasonic field for 10 min.
The pretreated materials were mixed with water, H2SO4 and Na2SO3, and then were tested under the optimal condition.
Fig. 3 Effect of temperature on leaching rate Fig. 4 Effect of Na2SO3 adding amount on leaching rate In the experiment, the electrode materials are taken out from four pieces of spent lithium-ion battery as the raw materials.
Afonso: Journal of Hazardous Materials, Vol.150(2008),p.843 [4] Chengyan Wang， Dingfan Qiu， Yongqiang Chen: Nonferrous Metals (Extractive Metallurgy), Vol.5 (2004), p.39 (In Chinese)

Numerous techniques have been used to obtain fluorine doped SnO2 materials.
Applied Surface Science, 2009. 255(23): p. 9358-9364
Journal of hazardous materials, 2007. 139(2): p. 310-315
-W., et al., Fluorine-doped nanocrystalline SnO< sub> 2 powders prepared via a single molecular precursor method as anode materials for Li-ion batteries.
Journal of Science and Technology, 2012. 4(1).

As is well known that the maximum stress in stress concentration area on each double-notched specimen is not equal, but the stress will rapidly reduce and will become very close to the yield stress of materials when approaching the boundary of the stress concentration area.
[2] Wang S.W., Nishida S., Hattri N., et al: JSME International Journal, A Vol. 43 (2000), p.415
Williams: International Journal of Fatigue, vol.24 (2002), p.923
Rice: Journal of Applied Mechanics, Vol. 35 (1968), p.379
Dragon: Computational Materials Sci., Vol. 44 (2008), p.464

Friction seems to be anisotropic with directions linked to the material anisotropy.
The yarn-to-yarn samples have been obtained by the “unweaving” of the same material.
D. (1979) Friction and Lubrication in Bulk Metal Forming Processes, Journal of Applied Metalworking, 1, pp. 7-19 [7] Suresha B., Kumar K.S., Seetharamuc S., Sampath Kumaran P. (2010).
‘Tribological properties of woven para-aramid fabrics and their constituent yarns’, Journal of Materials Science, 33, 3293–3301
‘Friction and wear behaviour of Kevlar fabrics’, Journal of Materials Science, 28, 1305–1311

Materials and Methods Two different titanium alloys, commercially pure titanium (Grade 2 [8]) and Ti-6Al-4V (Grade 5 [8]), were selected as experimental material for this study.
Yu, Influence of Electrolyzing voltage on chromatics of anodizes titanium dentures, Materials Transaction 43 (2002) 3142-3145
Barteri, High temperature resistance of high nitrogen and low nickel austenitic stainless steel, Journal of Material Science and Letters 22 (2003) 691-693
Barteri, Fatigue behavior of a high nitrogen austenitic stainless steel as a function of its grain size, Journal of Material Science and Letters 22 (2003) 1511-1513
Gaul, Coloring titanium and related metals by electro- chemical oxidation, Journal Chemical Education 70 (1993) 176–179.

It must be noted that the age-hardening process can be applied only to materials which exhibit a decreasing solubility with decreasing temperature. 1.2 Al 6xxx Alloys precipitation Aluminum alloys have been the material of choice for aircraft construction since the 1930s.
Troeger, L.P. and Starke, E.A., “Microstructural and Mechanical Characterization of a Superplastic 6xxx Aluminum Alloy”, Materials Science and Engineering, A277, 102-113, 2000 2.
Hirth, S.M., Marshall, G.J., Court, S.A. and Lloyd, D.J., “Effects of Si on the Aging Behaviour and Formability of Aluminum Alloys Based on AA6016”, Materials Science and Engineering, A319- 321, 452-456, 2001 3.
Zehn, L., Kang, S.B. and Kim, H.W., “Effect of Natural Aging and Preaging on Subsequent Precipitation Process of an Al-Mg-Si Alloy with High Excess Silicon”, Materials Science and Technology, 13, 905, 1997 5.
Journal of materials processing technology 135 (2003) 83-90 18.

Laser and fluid chemical etching of the difficult-to-cut materials for large-scale machining is proposed by our research group in recent years [1].
Experimental Materials and Research Methods Cr12 mold steel, W18Cr4V high speed steel are chosen as experimental materials, corrosion medium is diluted hydrochloric acid and nitric acid solution.
HCl as the corrosive combining etching Cr12: For oxygen the material oxidation reaction takes place first.
Therefore, the chemical reaction of combining processing primarily is the oxidation of materials reaction and oxide dissolution reaction.
Acknowledgements The work is supported by the National Nature Science Foundation of China (program No.50675001) and the Nature Science Foundation of Anhui Province (No. 090414166） References [1] Genfu Yuan，Yansheng Yao，shaofeng Zhu and Yuanlong Chen: 3rd Pacific International Congress on Applications of Lasers and Optics（PICALO）April 16 -18, 2008, Beijing [2] Yuanlong Chen, Bichao Xu, Genfu Yuan etal: Proceedings of 2007 annual conference on Chinese Mechnical Engineering, China Machine Press, 11 (2007) [3] Yuanlong Chen, Bichao Xu, Genfu Yuan etal: China Mechanical Engineering, 20 (11),(2009): p. 1356 [4] Yuan Genfu :Chinese Journal of Lasers[J], 34 (2007)：p. 460 （b）High magnification morphology （a）Machined surface topography

Currently, great progress has been obtained on theoretical study and project practices of diseases treatment with the development of new materials, theories and technologies.
The main reason which causes the diseases in the sidewall is that the lateral pressure of filled materials is more than the sidewall resistance.
In Dongqing Bridge, the mud in the sidewall mortar was too much and the shapes of stone materials varied; still, the construction quality of sidewall was not so good.
Due to damage of bridge deck pavement, the water softened the filled material, which decreased the stability of filled materials.
References [1] Guoyin He, Jianting Zhou and Lu Liu: Journal of Chongqing Jiaotong University (Science edition)Vol. 28(3) (2009), p. 525-527,in Chinese

Program in Materials Science and.
Special steels have been studied to resist these processes in which cause a significant degradation of these materials.
The reduced activation composition adopted for fusion structural materials has involved the substitution of some alloying elements such as Mo, Nb and Ni present in the commercial martensitic steels by other elements which exhibit faster decay of induced radioactivity, such as Ta, W and V [1].
BechadeNovel Powder Processing: Advances in Powder Metallurgy & Particulate Materials, vol. 7, Metal Powder Industries Federation, Princeton, NJ, 1992, p. 169
Maziasz, New nano-particle-strengthened ferritic/martensitic steels by conventional thermo-mechanical treatment, Journal of Nuclear Materials 367–370 (2007) 48–53