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.

scholarly journals Tribological Properties of Dental Enamel Before and After Orthodontic Bracket Bonding-Debonding by Nano-Scratch Test

2017 ◽  
Vol 35 (02) ◽  
pp. 279-287 ◽  
Author(s):  
A. Karimzadeh ◽  
M. R. Ayatollahi ◽  
T. Hosseinzadeh Nik
Keyword(s):  
Tribological Properties ◽  
Tooth Enamel ◽  
Dental Enamel ◽  
Scratch Test ◽  
Human Tooth ◽  
Nano Composite ◽  
Orthodontic Bracket ◽  
Significant Difference ◽  
Before And After ◽  
Nano Scratch Test

ABSTRACTThis study investigates the effect of bracket bonding-debonding on the tribological properties of human tooth enamel, when two different adhesives are applied. The nano-scratch experiment was performed on the enamel at untreated and under the bracket regions to obtain wear resistance, scratch hardness and friction coefficient. The results indicated that the tribological properties of the enamel vary significantly after bracket bonding-debonding. However, no significant difference exists between the effects of bracket bonding by the nano-composite and the composite adhesives on the tribological properties. Therefore, considering the mechanical and physical properties of the nano-composite adhesive, its bond strength for orthodontic bracket bonding and the influences on the enamel after removing the bracket, the use of nano-composite adhesive is suitable for orthodontic treatments.

Damage Evolution of Interface between Si_3N_4/Cu Films Using Nano-Scratch Test

2004 ◽  
Vol 2004.1 (0) ◽  
pp. 375-376
Author(s):  
Takeshi AKAI ◽  
Tadahiro SHIBUTANI ◽  
Qiang YU ◽  
Masaki SHIRATORI
Keyword(s):  
Damage Evolution ◽  
Scratch Test ◽  
Cu Films ◽  
Nano Scratch Test

The Correlation of Adhesion Strength with Barrier Structure in Cu Metallization

2003 ◽  
Vol 766 ◽  
Author(s):  
A. Sekiguchi ◽  
J. Koike ◽  
K. Ueoka ◽  
J. Ye ◽  
H. Okamura ◽  
...  
Keyword(s):  
Thin Films ◽  
Adhesion Strength ◽  
Nitrogen Concentration ◽  
Scratch Test ◽  
Barrier Structure ◽  
Barrier Layers ◽  
Cu Metallization ◽  
Microstructure Observation ◽  
Sputter Deposited ◽  
Sulfur Containing

AbstractAdhesion strength in sputter-deposited Cu thin films on various types of barrier layers was investigated by scratch test. The barrier layers were Ta1-xNx with varied nitrogen concentration of 0, 0.2, 0.3, and 0.5. Microstructure observation by TEM indicated that each layer consists of mixed phases of β;-Ta, bcc-TaN0.1, hexagonal-TaN, and fcc-TaN, depending on the nitrogen concentration. A sulfur- containing amorphous phase was also present discontinuously at the Cu/barrier interfaces in all samples. Scratch test showed that delamination occurred at the Cu/barrier interface and that the overall adhesion strength increased with increasing the nitrogen concentration. A good correlation was found between the measured adhesion strength and the composing phases in the barrier layer.

Sign in / Sign up

Export Citation Format

Share Document