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Final received solid materials were separately named MA-MCM-1, MA-MCM-2 and MA-MCM-4.
Results and Discussion Characterization of synthesis materials Powder XRD patterns in the range of 1.0~10.0˚ of the three samples were shown in Fig. 1.
The adsorption experiments with different time were carried out to test the ability of the three synthesis materials to remove heavy metal ions in low concentration.
[2] Zeid Abdullah Al-othaman, Synthesis, modification and application of mesoporous materials based on MCM-41, In: Ph D.
(Ed.), Ion Exchange: Science and Technology.

Materials and Experimental Procedures As-sintered silicon nitride ceramic and as-casted 40CrMo alloy were used as base materials.
AgCuTi foil with a thickness of 50µm and Pd foil with a thickness of 10µm were used as raw materials of filler alloy.
The size of the samples of the base materials is 3×4×2mm3.
A compressive load of 4.3×10 -2N was exerted on the samples to contact the base materials and the filler alloy closely.
Drew: International Journal of Refractory Metals and Materials Vol. 22 (2004), p. 95 [3] J.

A Brief Analysis of Global Rare Earth Trade Structure Ying Li1,a,Anjian Wang2,b, Jianwu Li3,c*, Qishen Chen4,d 1Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 2Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 3Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 4Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China aliyinghzy@sina.com, bajwang@cags.ac.cn, c jwli67@126.comdchenqishen2012@126.com Keywords: rare earth, trade structure, rare earth prices Abstract Since a large number of cheap rare earth from China entered the international market in the late 1980s, the rare earth structure in world started to change, and China replaced the United States as the largest rare earth producer and exporter.
However, it is concerned that the trade structure that China exports the cheap raw materials and buys finished goods back at a higher price is still continue to exist, for the reason that rare earth researches in China mainly focus on rare earth separation, extraction, as well as applied researches on traditional fields [2].
Statistics show that most of Japan’s exports of primary rare earth products (not including materials, components and products containing rare earth) were sold at a higher average price than imports, with higher added value after further processing (Figure 4).
China’s technology advantages are mainly in the front process of rare earth industry chains such as mining, smelting separation and production of some materials, and China still export primary mineral products to other countries.
Japan and the United States have a considerable advantage in manufacturing rare earth materials, components and final products, and the additional value of rare earth products in these countries is much higher than that in China.

Experimental Materials.
Shiono: European Polymer Journal.
Kang: Materials and Design.
Bayoumi: Materials and Design.
Ray: Materials Science and Engineering A.

College of Materials Science and Engineering, Lanzhou University of Technology; 2.
Pressure vessel materials are composed by the 2205 dual phase steel with inner thickness of 4mm and the16MnR outer steel with the thickness of 80mm.
In order to get more effective numerical calculation results, the weld on pressure vessel can also be seen as materials with different attributes.
Journal of Qinghai University,2004,22(5): 20-24
Science and technology information (academic research), 2007,(20):9-11

And the specific performance of packaging materials also put forward higher requirements.
Honghui Wu from the Beijing Advanced Innovation Center for Materials Genome Engineering of the University of Science and Technology Beijing for providing the related computing platform.
Journal of Welding, 2018, 39 (09): 49-54 + 131
Journal of Physical Chemistry, 1992, 96 (24): 9768-9774
Materials Transactions, 2009, 50 (5): 1231- 1234.

Materials Science & Engineering.A234~236(2001), p.46
Materials Science and Engineering A, Volume 308, Issues 1-2, 30 June 2001, P.38-44
Materials Letters, Volume 59, Issue 6, March 2005, p.671-675
Materials Science and Engineering A, Volume 278, Issues 1-2, 15 February 1999, p. 66-76
Rare Metals Materials and Engineering, Vol.31(2002),p.135

Introduction The metal foams as a type of new materials have attracted growing interests since about fifteen years ago in many fields of research [1,2].
These materials combined with low mass and important mechanical characteristics have useful applications in many fields.
Forest and al., Continuum modeling of strain localization phenomena in metallic foams, Newspaper of Materials Science, vol. 40, n°22, 2005
Part I Yield criteria and flow rules for porous ductile media, Journal of engineering materials technology, n°99, p 2-15, 1977
[8] A.Cherouat, L.Moreau, H.Borouchaki, Advanced numerical simulation of metal forming processes using adaptive remeshing procedure, Material Science Forum 614 (2009) 27–33

At the Department of Materials Science and Engineering of USP-EEL a process was developed for the production of a low cost mixed yttrium-rare earth oxide, RE2O3, where RE stands for rare earth elements, starting from "Xenotime", an yttrium rich phosphatic ore (RE,Y)PO4[3].
The type and amount of this secondary phase is responsible to a high degree for the observed creep behaviors of these materials.
Bellosi: Materials Science of carbides, nitrides and borides Vol 68 (1999), p. 285
Wilshire:"Introduction to Creep", The Institute of Materials, London, (1993)
Yasuda: Journal of Material Science Vol. 32 (1997), p. 3813

The presence of these materials in water streams is a hazardous threat to human life and other flora and fauna.
This may be attributed to the small amount of these materials in the mixture.
Morkoç, Zinc oxide materials and devices grown by MBE. 2013
Zeng, "Stabilization of nanoscale zero-valent iron (nZVI) with modified biochar for Cr (VI) removal from aqueous solution" Journal of Hazardous Materials, 2017
Mahmoodi, “Materials Science in Semiconductor Processing Preparation , magnetic properties , and photocatalytic performance under natural daylight irradiation of Fe3O4 -ZnO core / shell nanoparticles designed on reduced GO platelet,” Mater.