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In this research, investigation into material properties of the newly developed EC-PCD is made.
Recent years, application area of the PCD has been expanded to a grinding wheel for fine processing of hard to machine materials and a wear-less electrode for EDM.
And the material properties of the developed EC-PCD were examined.
This work was partly supported by Osawa Scientific Studies Grants Foundation and Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research (C)).
Nakamura: Characterization of Boron-Doped Diamond Film, Japanese Journal of Applied Physics, Vol.28, No.6 (1989) pp.1066-1078.

Science and technology of advanced materials. 2018; 19(1):613-48. https://doi.org/10.1080/14686996.2018.1494493 [2] Zahid MU, Pervaiz E, Hussain A, Shahzad MI, Niazi MB.
In IOP Conference Series: Materials Science and Engineering. 2019; 543(1):012032. https://doi.org/10.1088/1757-899X/543/1/012032 [12] Ukanwa KS, Patchigolla K, Sakrabani R, Anthony E, Mandavgane S.
Journal of Materials Chemistry A. 2015;3(44):21968-89. https://doi.org/10.1039/c5ta04822b [14] S Maulina and M Iriansyah.
IOP Conference Series: Materials Science and Engineering. 2018; 309:012072. https://doi.org/10.1088/1757-899X/309/1/012072 [15] Tazibet S, Velasco LF, Lodewyckx P, Abou M’Hamed D, Boucheffa Y.
Materials Chemistry Frontiers. 2021;5(14):5319-27

With the development of technology, producing new material by waste PET and other materials is receiving more and more attention and has very wide prospects.
Using PET as binding material is relatively sparse [9].
Construction and Building Materials, 2010,24: 25-36
Construction and Building Materials, 1996,10: 215-220
Journal of Shandong University(Engineering Science), 2012, 42(1): 106-108.

Zheng: Journal of Material Science Technology Vol.23 (2007), p. 247-252
Huang et al.: Journal of Plasticity Engineering Vol.14 (2007), p. 80-84, in Chinese
Lim: Journal of the Korean Institute of Metals and Materials Vol.38(2000), p. 529-533
Watari: Journal of Materials Processing Technology Vol.153-154(2004), p. 42-47
Bahaia: Journal of Alloys and Compounds Vol.502(2010), p.382-386.

Study on The Influence from Concrete Mixture Proportions to Polycarboxylate Super Plasticizer Utility Xiquan Xu1,a Haichao Wang2,b Gang Liu3,c and Chunhe Zhao4,d 1Rizhao Polytechnic,Rizhao,Shandong,276826,China 2Shandong university of science and technology,Qingdao,Shandong,266590,China 3Rizhao seaview building materials co., LTD,Shandong,276826,China 4Rizhao seaview building materials co., LTD,Shandong,276826,China a18906335576@163.com,bhchwang6031@163.com,crzptxuxiquan@163.com, dshenshurng@126.com Keywords: High performance water reducer,Cement fluidity,Concrete slump.
Abstract: In this paper,study the influence from concrete mixture proportions to poly carboxylate super plasticizer utility, discuss the net of gelled material pulp of liquidity and concrete slump collapse performance issues,analysis fresh concrete and gradation impact on the performance of concrete ,according to the concrete engineering practice.The conclusion is that the above situation can give an explanation in the super plasticizer mechanism level,and can be used in the selective use of admixture ,as well as reference for the choice of materials of concrete .
in normal times,find the main reason through contrast test quickly,and adjust dosage of materials,to do so, you can change the working performance of concrete and reduce the consumption of admixture.
[4] Xingyang He,Baoguo Ma,Ying Su,The impact from fineness and holding time on strength of cement with wet milling slag slurry[J].Journal of University of Jinan.(2009),23(1):9-13
[J]Journal of Wuhan Institute of Technology.(2011),33(8):30-33

Science technology and engineering ,2010, 10: 2848～2852.
Journal of Kunming University of Science and Technology，2008，33(4): 1～6.
Journal of Safety science and Technology，2006，2(6):58-61.
Journal of Hazardous Materials[J], 2008: 152(2), 846～852
Tailings Management [M].Elsevier Science Publishers BV, 1989

Therefore, many researchers have tried to prepare compound of HA with other materials to simulate nature bone capability for many years.
But it needs long preparation period to prepare HA-polymer hybrids and run the risk of introducing deleterious materials into body.
Journal of materials science.
Journal of Biomaterials Science, Polymer Edition.
Journal of Non-Crystalline Solids.

Experimental Materials and Equipment. 42.5 ordinary Portland cement, standard sand, distilled water, Viscoelastic Damping Material Series Qtech[10] (Qtech501, Qingdao Shamu Advanced Material Co., Ltd.), Vibration Data Collector(INV3018,china orient institute of noise&vibration), Vibration Signal Processing software(v10, china orient institute of noise&vibration), PHX-20 spray machine with AP-2 spray gun (PMC instrument).
Acknowledgment This work is financially supported by National Natural Science Foundation of China (51578298).
Feng, Study on the Vibration Performance of a Multi-layer Flat Restrained Damping Structure, International Conference on Transportation Infrastructure and Materials, (2017)
Lu，Optimal Design for Partial Constrained Layer Damping, Journal of Tsinghua University (Science and Technology), 12 (2011) 1877-1881
Li, Research of Damping Property of Viscoelastic Damping Materials 501 and Structure, Development and Application of Materials, 04 (2014) 82-85.

Hydrothermal Synthesis and characterization of CeO2 :Eu 3+ Nanopowders Meng Zhoua , *Xin Wangb ,Guijun Jiang c, Qiang Liud , Songtao Gue , Haoquan Liuf Institute of Materials Science and Engineering, Ocean University of China, Qingdao China. 266100 a zhoumengld@163.com, corresponding author:b wangxinhd@ouc.edu.cn, c j_gjun123@163.com, d liuqiang1985@tom.com, e dgst1232000@163.com,fchris1984lhq@163.com Keywords:CeO2:Eu3+ ; hydrothermal method; Photoluminescence; precursor Abstract.
,have attracted great attention owing to their unique optical, electrical, and magnetic properties.[1-4] Rare earth oxides are important parts of rare earth compounds.Compared with the other nanostructured lanthanide oxides, ceria nanocrystals have been widely investigated as important functional materials.Ceria has been extensively used in a wide variety of applications such as solid oxide fuel cells (SOFC) [5] ,catalysis [6] , luminescent materials [7] , gas sensors [8] , polishing materials [9] , and ceramic materials [10] and so on.It has a face centered cubic fluorite (CaF2) crystal structure (a = 5.411Å) and is very stable even at high temperatures.To the best of our knowledge,Ceria has no 4f electrons.As a result,it do not consume energy.
Ceria has strong absorption of ultraviolet (UV) because of the charge transfer between O2− and Ce4+ .Maybe,ceria is a good kind of host.It is wellknown that the performance of Eu3+ is excellent on quantum efficiency and monochromaticity.Therefor,Eu 3+ is one of the most popular ions in rare earth luminescent materials.
,Journal of Non-Crystalline Solids. 283 (2001) 129-136
,Journal of Shantou University(Natural Science). 21(3) (2006) 23-26 [12]Hai Guo, Journal of Solid State Chemistry. 180 (2007) 127-131 [13]WANG Xiao-dong，LIU Xiao-hua*，CHEN Shao-jun，et al., Spectroscopy and Spectral Analysis. 27(11) (2007) 2182-2185 [14]Gao-Ren Li, Dun-Lin Qu *, Laurent Aruraul,et al.

As a result, the impact toughness of complex materials is improved.
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