scholarly journals Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold

2015 ◽  
Vol 110 ◽  
pp. 54-61 ◽  
Author(s):  
Xiaoming Liu ◽  
Zhanli Liu ◽  
Yueguang Wei
Keyword(s):  
Single Crystal ◽  
Scratch Test ◽  
Nano Scratch Test

Enhanced mineralized tissue adhesion to titanium over polystyrene assessed by the nano-scratch test

2005 ◽  
Vol 74A (2) ◽  
pp. 164-170 ◽  
Author(s):  
Frank Butz ◽  
Hideki Aita ◽  
Kazuo Takeuchi ◽  
Takahiro Ogawa
Keyword(s):  
Scratch Test ◽  
Mineralized Tissue ◽  
Tissue Adhesion ◽  
Nano Scratch Test

An Experimental Study of the Nano-Scratch Behavior of Cement Composite Material

2011 ◽  
Vol 492 ◽  
pp. 47-54 ◽  
Author(s):  
Jing Xu ◽  
Wu Yao
Keyword(s):  
Composite Material ◽  
Coefficient Of Friction ◽  
Cement Composite ◽  
Scratch Test ◽  
Cement Clinker ◽  
Plastic Behavior ◽  
Soft Matrix ◽  
Elastic Plastic ◽  
The Coefficient Of Friction ◽  
Nano Scratch Test

This paper presents a preliminary exploration in tribological property and dynamic elastic/plastic behavior of cement composite material at micro- and nano- scale. Pastes were prepared by pure cement clinker with water-to-cement ratio of 0.3 and 0.4. For comparison, a polymer-based clinker composite was also introduced. Nano-scratch test was carried out to study the scratch process. Different constituents were identified by penetration depth value. Based on this identification, the coefficient of friction and elastic deformation status were analyzed. Substrate effect was found when refers to the coefficient of friction of hard clinker particles embedded in soft matrix. An H/E ratio dependent elastic/plastic behavior was also revealed for cement composite. The results confirm the nano-scratch test as a promising method for cement composite investigation; however, some important attributes of this type of material, including the complexity of multi-phase structure and the viscous effect, need to be taken into account in experimental analysis and practical application.

1402 Evaluation of Crack Patterns on Surface of Single Crystal Wafer using Scratch Test

2012 ◽  
Vol 2012.18 (0) ◽  
pp. 441-442
Author(s):  
Takanori SUZUKI ◽  
Satoshi SUTO ◽  
Takuya SATO ◽  
Masayuki SUGAYA ◽  
Masayoshi TATENO
Keyword(s):  
Single Crystal ◽  
Scratch Test ◽  
Crack Patterns ◽  
Crystal Wafer

Theoretical Analysis and Experimental Verification of Triangular Fracture Defects of MgO Single Crystal Substrate in Lapping or Polishing Process

2007 ◽  
Vol 364-366 ◽  
pp. 739-744 ◽  
Author(s):  
Ke Wang ◽  
Ren Ke Kang ◽  
Zhu Ji Jin ◽  
Dong Ming Guo
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Surface Quality ◽  
Formation Mechanism ◽  
High Temperature Superconductor ◽  
Substrate Surface ◽  
Scratch Test ◽  
Superconductor Film ◽  
High Temperature Superconductor Film

MgO single crystal is mainly used as substrate for high temperature superconductor film. Surface quality of MgO substrate has significant effect on the function of high temperature superconductor film. MgO single crystal is a typical hard and brittle material, and is easily cleaved along the {100} face, so some defects are always generated on the substrate surface while lapping and polishing, which badly affects the surface quality of the substrate. In this paper, a kind of typical defect, the triangular fracture defect which is on the substrate surface after lapping and polishing, is analyzed in detail. According to the structure characteristics of the MgO single crystal, and based on the dislocation reaction theory, a formation mechanism of the triangular fracture defect in lapping and polishing processes is explored. Through the single grain scratch test in different directions on the polished surface of MgO{100} single crystal substrates, the formation mechanism of triangular fracture defect in lapping and polishing processes is verified. And during the scratch test, the plastic flow of the MgO single crystal material beside the scratch was observed.

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