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Simulation of Surface Contact Process and Study of Friction and Wear Mechanisms Fan Yujin1, a, Li Zhekun1 , Liu Jianxiong1 1College of Mechanical and Electronic Engineering, Kunming,University of Science and Technology,Kunming,650093,China afanyujin@kmust.edu.cn, Keywords: Wear, friction, surface contact, surface deformation, finite element Abstract.
Though the development of material science, surface analysis and test techniqu is consumedly promoted, the research of friction and wear is still a complicated question, friction and wear accompanies with the plastic deformation and plastic flow of surface.
Constitutive Model of Material.
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The spring angles for these materials are minimal in comparison with other materials.
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Aspects of the Structure and Corrosion Resistance of Materials Used in Tongue Piercings BUZEA Corina – Mona1,a, CSAKI Ioana 2,b, COTRUȚ Mihai Cosmin2,c 1Faculty of Dental Medicine, ”Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania. 2, 3Faculty of Material Science and Engineering, University ”Politehnica”, Bucharest, Romania.
Methods and Materials The piercing further used as samples in our study are shown in figure 1.
Materials were tested in the same conditions, to determine their corrosion resistance.
Antoniac, The influence of the magnesium powder used as reinforcement material on the properties of some collagen based composite biomaterials, Journals of optoelectronic and advanced materials, Volume 15, Issue 7-8, (2013) 667- 672 [11] H.
Melnicenco Variability of the composite resins adhesion with the dental substrate preparation and the used adhesive type, Journal of adhesion science and technology, Volume 30, Issue 16, (2016) 1754-1764 [12] M.L.

Material and Metod Materials.
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Fudholi, A review on natural fibers for development of eco-friendly bio-composite: characteristics, and utilizations, Journal of Materials Research and Technology, Volume 13, July–August 2021, Pages 2442-2458

Therefore, the converter slag can be used as a part of the sintering raw materials.
These features are beneficial to improve the sinter quality and reduce the consumption of sintering raw materials.
Therefore, that the dephosphorization of steel slag as the sintering raw materials was studied during the sintering process was of great value.
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Laigang Science & Technology, 2009(5): 62-63(In Chinese).

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Study on the preparation of strontium-doped hydroxyapatite whisker Tingting YAN1, Yongshun CUI1, Qinghua CHEN1,* 1 Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China * Corresponding author, E-mail: chenqinghua_yn1@163.com, yantting@gmail.com Key words: hydroxyapatite, whisker, strontium, biomaterial Abstract Hydroxyapatite is well used as bone repair materials, due to its properties that can be combined with strontium to improve mechanical property and degradation property.
Therefore, the HA materials cannot be used as heavy-loaded implants, such as artificial teeth or bones.
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Introduction Since some applications of bonded dissimilar materials operate at elevated temperature, the stress field near the interface edge between dissimilar elements under creep regime becomes a critical issue.
Analytical Procedure The creep analysis for bonded dissimilar materials with an interface edge has been conducted under the plane-strain condition by a FEM code, ABAQUS 6.5.1.
The perfectly bonding condition is assumed on the interface between elastic and creeping materials.
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The X-ray studies on amorphous Fe78Nb2B20 alloy Małgorzata Karolus Institute of Material Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland karolus@us.edu.pl Keywords: diffuse scattering, amorphous materials, Rietveld method Abstract In this paper there are presented results of structure analyses of the Fe78Nb2B20 amorphous alloy after annealing.
From the classical point of view the structure analyses of the amorphous materials might be done by the Radial Distribution Function [1] and Pair Distribution Function [2].
The Fe-Nb-B alloy was obtained by melt spinning method in the Institute of Non-Ferrous Materials in Gliwice.
Waseda - The Structure of �on-crystalline Materials, Mc Graw-Hill, New York 1979 [2] D.
Łągiewka, Structure studies of Fe81Nb5B14 annealed alloys by Rietveld Refinement, Journal of Alloys and Compounds 423 (2006) 92 - 95 [4] A.Chrobak , D.Chrobak, G.Haneczok, P.Kwapuliński, Z.Kwolek, M.Karolus, Influence of Nb on the first stage of crystallization in the Fe86-xNbxB14 amorphous alloys, Materials Science and Engineering A 382 (2004) 401-406 [5] M.Karolus, Applications of Rietveld refinement in Fe-B-Nb alloy structure studies, Journal of Materials Processing Technology 175 (2006) 246 - 250 [6] R.