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Key Engineering Materials Vol. 7

The key energy saving of automobile body coating was stated.
The consumption of floating material would be reduced by 20%.
Key Energy Saving Techniques of Painting Management.
Painting management includes the order of painting material, control of material quality and control of work process.
A Brief Talk on Energy-Saving Process, New Material, New Equipment and Management of Painting.

Key Engineering Materials Vols. 42-43

Discussions on Fracture Factors of Brittle Materials under the Shear-compression Condition Zhihui Lia, Junping Shib and Anmin Tangc Department of Engineering mechanics, Xi’an University of Technology, Xi’an 710054, China alizhihui@xaut.edu.cn, bshijp@xaut.edu.cn, ctangmin@xaut.edu.cn Keywords: Brittle material, Shear fracture, Shear fracture angle, Stress triaxiality Abstract.
Furthermore, the analysis of fracture mechanism shows that, to the same material, the fracture mechanism is different under different stress states, and the key factor influencing fracture is also different.
The key factors influencing shear fracture angle Influence of stress state on shear fracture angle.
In the uniaxial compression test of brittle materials, frictional force between end face of test piece and pressure head of testing machine, and additional tensile stress produced in the materials when harder crystalline grain wedge in softer medium have changed original stress state at the fracture point, influenced the direction of fracture surface, and even fracture forms and mechanisms of materials.
Bruhns: Mechanics of Materials Vol.39 (2007), p. 291 [4]D.L.

Ion beam bio-engineering was established by Chinese researcher in 1980s.
Introduction Ion beam bio-engineering was established by Chinese researcher in 1980s[1].
Key laboratory of ion beam bioengineering institute of plasma physics Chinese academy of sciences, Henan Provincial key laboratory of ion beam bio-engineering Zhengzhou University and center of ion beam bioengineering Xinjiang University are main 3 institutions.
The applied researches have mainly been done by Henan Provincial key laboratory of ion beam bio-engineering Zhengzhou University and center of ion beam bioengineering Xinjiang University.
These results will effectively promote the ion beam bio-engineering a good prospect.

Study on Leakage Rate of HDPE/Paraffin Composite for Phase Change Materials Huan-rui Liu1, 2, a, Wen-bin Yang1, 2, b, Xin-yi Pu1, 2, c and Kai Zhang3, d 1State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials, Southwest University of Science and Technology, Sichuan 621010, China 2School of Materials Science and Engineering, Southwest University of Science and Technology, Sichuan 621010, China 3 Institute of System Engineering, China Academy of Engineening Physics, Sichuan 621010, China a814290691@ qq.com; byangwenbin@swust.edu.cn; c283738460@qq.com; dzhangkaiwzp@163.com Keywords: paraffin; high density polyethylene; phase change materials; leakage rate.
Based on high density polyethylene (HDPE) as supporting and encapsulating materials, paraffin wax as energy storage materials, HDPE/paraffin composite for phase change materials was prepared in the paper.
HDPE/paraffin composite for phase change materials with low leakage rate was produced.
But, if the mixing temperature is too low, it will be difficult to blend the materials.
Acknowledgement This work was financially supported by NSAF of China (No.11176025), Open Project of State Key Laboratory Cultivation Base for Non-metal Composites and Functional Materials (No.10zxfk31, No.11zxfk01), and Open Project of Key Subject Laboratory of National Defense for Radioactive Waste and Environmental Security (No.10zxnk06).

Overview on the Corrosion Behavior of Ultra-Fine Grained Materials Fabricated by Equal-Channel Angular Pressing Dan Song, Aibin Ma, Jinghua Jiang, Pinghua Lin College of Mechanics and Material Engineering, Hohai University, 1 Xikang Road, Nanjing 210098, China.
The large proportion of the non-equilibrium grain boundaries and high residual stress inside of the grain were regarded as the key to affect the corrosion behavior of the UFG materials.
Present state of the effect of ECAP on corrosion behavior Characterization of the corrosion behavior of modern materials is important both for prospective engineering applications and for better understanding of their fundamental physical properties.
Both of them provide the UFG materials more corrosion nucleus than ordinary CG materials.
To some passive materials like titanium [6], the more corrosion nucleus let the UFG materials form rapid passive film in corrosive media excluding the corrosion and let it represent better corrosion resistance than CG materials.

CAS Key Lab of Salt Lakes Res. & Chem., Qinghai Inst of Salt Lakes at CAS, 810008, China aCorresponding author, Email: tldeng@tust.edu.cn Key words: boron; boron compounds; new energy and new materials.
Boron-based materials have an attractive property of high melting point, high hardness, antiwear, corrosion resistance, excellent electrical conductivity and anti-metal fusion to be the candidate materials for surface engineering materials.
Surface engineering materials also have the usage of electrofacing, chemical plating, and special chemical heat treatment process.
The future tendency of boron-based surface engineering materials will focus on the enhancement of compression coefficient, optimization of boronizing methods. 1.2 Boron additives.
The attractive physical and mechanical properties of boride cermets materials can be used as the candidate materials in aerospace, military, automotive.

Study on the Cooperative Learning in the Teaching of Civil Engineering ZHANG Jintuan Hezhou University of the Guangxi Zhuang Autonomous Region, china 349853900@qq.com Key words: The teaching reform.
Civil engineering courses.
The biggest feature of cilvil engineering is the strong practicalness.
To construct a building we have to learn lots of knowledge, such as geotechnical investigation, engineering geological mapping, soil mechanics, engineering mechanics, engineering design, building materials, construction equipment, engineering machinery, engineering economy, etl.
Therefore, to carry out Autonomous and cooperative learning mode in civil engineering courses is in line with the professional training of civil engineering.

China nami_zhu@yahoo.cn Key words: secondary vocational education; science & engineering profession; effective educational model; effective teaching method Abstract.
The proportion of students opened physics course in secondary vocational schools’ science &engineering majors is so low, which has beyond our predictions.
Lots of special training of senior mechanic talent of secondary vocational school of science &engineering major has its necessity, physics as a basic course in science & engineering department, which plays an irreplaceable role in making the students to grasp the professional skills and improve overall quality aspect.
This requests us reform of our current teaching materials, reform our teaching mode and teaching methodology, thoroughly change the traditional education idea, set up the physics course should and must service for the professional’s thought, must learn professional knowledge in the process of teaching, dig deeperly into physics and taught professional correlation.
Only in this way, physics teaching as the basic knowledge can be coruscating vitality, make our science & engineering vocational education level to reach a new stage.