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Therefore, in practice, the Cheng-Vachon equation does not provide an exact fit to materials with high porosity.
Evans, An assessment of expressions for the apparent thermal conductivity of cellular materials, Journal of Materials Science, 29 (1994), 486-498
[2] Xiangyu Li, Xiaolong Zhao，Xiangyong Guo，Liqiang Cao，Investigations on Thermal Conductivity Models of Foamed Concrete, Building Science, 9(2010).
Vachon, The prediction of the thermal conductivity of two and three phase solid heterogeneous mixture, International Journal of Heat and Mass Transfer, 12 (1969), 249-264
[5] Shune Zhou, Zhongyuan Lu, Yun Yan, Study on Thermal Conductivity Model of Foamed Concrete, Materials Review, 23(6), 2010.

Experimental details Materials.
Proportion of materials and preparation of specimens.
International Journal of Textile Science 2012, 1(4): 19-28
[3] Weimin Li a, JinyuXua,b” Mechanical properties of basalt fiber reinforced geopolymeric concrete under impact loading” Materials Science and Engineering A 505 (2009) 178–186
Materials Science and Engineering A 505 (2009) 178–186

The main one is that powder metallurgy is capable of preparing materials with an ultra-fine or even nanoscale microstructure.
Prasada Rao, Effect of Mo on the High-Temperature Creep Resistance and Machinability of a Recycled Al-Alloy with High Iron Impurity, Journal of Materials Engineering and Performance. 25 (2016) 4310-4316
Hono, Mechanical properties and microstructures of Al–1Fe–(0-1)Zr bulk nano-crystalline alloy processed by mechanical alloying and spark plasma sintering, Materials Science and Engineering: A. 541 (2012) 152-158
Yan, Microstructure and mechanical properties of in-situ Al13Fe4/Al composites prepared by mechanical alloying and spark plasma sintering, Materials Science and Engineering: A. 558 (2012) 684-691
Xia, Thermal stability of ultrafine grained aluminium alloy prepared by large strain extrusion machining, Materials Science and Technology. 30 (2014) 850-859.

FATIGUE DAMAGE CHARACTER OF METAL RUBBER MATERIAL Yuming LI1,a, Hongbai BAI1,b, JianchunYANG2,c 1University of Ordnance Engineering, China 2University of Science and Technology Beijing, China aliyuming1976@sina.com, bbhbk11@sina.com, cyjc675266@163.com Keywords: Metal Rubber, Damaging Variable, Fatigue Test, Fracture Face, Electronic Scanning Microscope Abstract.
The fracture and fatigue character of MR is different from the metal material.
References [1] Yuming Li, Hongbai Bai, Zheng jian, Deformation behavior of metal rubber material, Progresses in fracture and strength of materials and structures, Key Engineering Materials, part 1(2006), pp.571-574 [2] W.
Spoltman: Fatigue testing of a composite propeller blade using fiber-optic strain sensors, Sensors Journal Vol. 3(2003), pp. 393-399 [4] Miner M A: Cumulative damage in fatigue.
Rahouadj: Nanostructural materials formation by mechanical alloying: morphologic analysis based on transmission and scanning electron microscopic observations, Materials Characterization Vol. 36(1996), pp. 185-190

Operating at a lower temperature has such advantages as a wider range of materials, a lower degree of material degradation, a shorter start-up time, and a longer stack service life.
When the surface is no rough, the coating electrode materials will not develop successfully.
LSM, NiO – ScSZ were used as materials of anode and cathode.
W. and Jin, S.: Chemistry of Material, (2001) No.13, p.372
HYUN: Journal of Materials Science, (2002) No.37, p.2535

[J]. journal of fuel chemistry and technology. 2003 , 31(6) :558
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Chemical Engineering Science. 62(2007): 5026 – 5032

It was seen that the UPF (Fig. 5a) was smooth and probably contaminated with wax and miscellaneous materials.
Materials & Design. 40 (2012) 378-385
Journal of material Science letters 19 (2000). 2151-2153
International Journal of Research in Engineering, IT and Social Sciences, 2(6) (2012) 86-94
Key Engineering Materials. 917 (2022) 32-37 [17] Imoisili, P.

By removing materials at the atomic level with the combined effect of chemical and mechanical reactions, chemical-mechanical polishing (CMP) can generate super surface roughness [3].
Also, if the tissue was denser, the material of K9 optical glass relied much more on mechanical action.
Kim, H.Y.Kim, H.D.Jeong, E.S.Lee,Y.J.Shin: Journal of Materials Processing Technology Vol. 130–131 (2002), P.334 [4] Zhongjun Qiu, Libo Zhou, Fengzhou Fang,Tsuyoshi Shina, Hiroshi Eda: Optics and Precision Engineering Vol.18 (2010), P.1553 (In Chinese) [5] Libo Zhou, Shimizu，Hiroshi Eda: International Journal of Manufacturing Technology and Management Vol.7(2005),P.441 [6] Y.B.
Applied Surface Science Vol.225 (2009), P.4205 [7] H.Huang, B.L.
Zhou: Materials Science and Engineering Vol.479 (2008), P.373 [8] Libo Zhou，Shinat，Qiu Zh J: Precision Engineering Vol.33(2009), P.499 [9] Arivazhagan Rajendran, Yasufumi Takahashi, Michihisa Koyama: Applied Surface Science Vol.244 (2005), P.34 [10] Zhou L, Eda H, Shimizu J, Kamiya S, Iwase H, Kimura S: CIRP Annals Vol.55 (2006), P.313

Magnesium and its alloys seem to be among the most appealing materials to design biodegradable stents.
Among the solutions proposed to overcome this drawback, the adoption of degradable materials coupled with new shapes of the device seems to be very promising.
[2] Hanawa T., 2009, Materials for metallic stents, Journal of Artificial Organs, 12(2), 73-79
Corrosion Science 49, 319-346
Journal of the Minerals, Metals and Materials Society 59, 49-53

This paper puts archaeological evidences and historical documents together as its research materials, reviews the history development of the felting techniques in the ancient Xinjiang, and represents the main features of the felting techniques in different eras.
The raw materials for felt production include sheep wool, goat wool, camel hair, etc; the handmade links of felt production include wool collection, wool cleaning, wool fluffing, wool spreading, heating and humidification, rolling and shaping.
The convenient material drawing and easy making process of the felts featuring great practical performances of anti-moisture, anti-wind and heat preservation had resulted in the affection of the ancient nomadic nations in Xinjiang in terms of the felts as the textile materials in their daily life for thousands of years.
Chen, A History of Textile Science and Techniques in China, Science Press, Beijing, 1984, 396-398
Yu, The Felt Maker in Yutian City, Journal of Xinjiang Human Geography Vol.5(2009)