Biotribological Behavior of Boronized Tungsten

2005 ◽  
Author(s):  
S. Ingole ◽  
R. Ribeiro ◽  
O. Juan ◽  
H. Liang ◽  
M. Usta ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Simulated Body Fluid ◽  
Wear Mechanisms ◽  
Body Fluid ◽  
Wear Behavior ◽  
High Strength ◽  
High Corrosion Resistance ◽  
Atomic Force ◽  
Pin On Disc ◽  
Wear Tests

Boronized tungsten is one of the potential biomaterials due to its high corrosion resistance, and high strength. Present investigation encompasses the wear behavior of this material in dry condition as well as in simulated body fluid (SBF). The pin-on-disc reciprocating tribometer was utilized to conduct the wear tests. The worn surfaces were analyzed using an atomic force microscope (AFM). Results showed that not only the SBF reduces the friction, but also shortens the initial break-in period. This presentation discusses the wear mechanisms of boronized tungsten affected by SBF.

Evaluation of the Bioactivity Behavior of a 48 Wt %SiO2 Bioglass through Experiments in Simulated Body Fluid

2012 ◽  
Vol 727-728 ◽  
pp. 1238-1242 ◽  
Author(s):  
Roger Borges ◽  
Antônio Carlos da Silva ◽  
Juliana Marchi
Keyword(s):  
Corrosion Resistance ◽  
Surface Layer ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Glass Network ◽  
In Vitro Experiments ◽  
High Corrosion Resistance ◽  
Before And After ◽  
O 19

Among bioceramics materials, bioglasses which exhibits either a bioactive or resorbable behavior has been studied for many applications, such as bone substitutive and regeneration. When in contact with body fluid, the bioglasses can induce the formation of a hydroxyapatite surface layer. In this paper, we studied the bioactivity of a bioglass containing 48 wt %SiO2, 27 wt% Na2O, 19 wt % CaO and 6 wt %P2O5. After fusion and annealing, the samples were immersed in SBF for different periods, up to 14 days. The samples were characterized through XRD, DRIFT and SEM before and after bioactivity experiments. The overall results suggest the formation of a surface layer of consisting of hydroxyapatite, which was crystallized within seven days after in vitro experiments, leading to a suitable bioactivity. Moreover, the samples showed a glass network with high cohesion due to calcium addition, leading to materials with high corrosion resistance.

scholarly journals Tribological behavior of Ti-6Al-4V and Ti-6Al-7Nb Alloys for Total Hip Prosthesis

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Mamoun Fellah ◽  
Mohamed Labaïz ◽  
Omar Assala ◽  
Leila Dekhil ◽  
Ahlem Taleb ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Hip Prosthesis ◽  
Tribological Behavior ◽  
Wear Behavior ◽  
Femoral Stem ◽  
High Strength ◽  
Wear Performance ◽  
Grain Structures ◽  
Pin On Disc ◽  
Wear Tests

The aim of the study is to evaluate the friction and wear behavior of high-strength alloys Ti-6Al-7Nb used in femoral stem and compare it with a Ti-6Al-4V alloy cylindrical bar corresponding to ISO 5832-3 part 3/01-07-199 standard. The tribological behavior was investigated by wear tests, using ball-on-disc and pin-on-disc tribometers. These tests consisted of measuring the weight loss and the friction coefficient of samples. The oscillating friction and wear tests have been carried out in ambient with oscillating tribotester in accordance with standards ISO 7148, ASTM G99-95a, and ASTM G133-95 under different conditions of normal loads (3, 6, and 10 N) and sliding speeds (1, 15, and 25 mm·s−1). As counter pairs, a 100Cr6 steel ball with 10 mm in diameter was used. Results show that the two alloys had similar friction and wear performance, although their grain structures and compositions are different. Occurrence of large frictional occurred, is probably caused by formation and periodic, localized fracture of a transfer layer. Higher friction with larger fluctuation and higher wear rate was observed at the higher siding speed. The Ti-6Al-4V wear mechanism transforms from ploughing and peeling off wear at low sliding speed to plastic deformation and adhesive wear.

BRIMCOLLOY

Alloy Digest ◽  
1971 ◽  
Vol 20 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
High Corrosion Resistance ◽  
Rolling Mills ◽  
High Corrosion ◽  
Copper Zinc

Abstract BRIMCOLLOY is a copper-zinc tin alloy having high strength, spring temper, superior conductivity and high corrosion resistance. It is produced in three grades: BRIMCOLLOY 100, BRIMCOLLOY 200, and BRIMCOLLOY 300. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-225. Producer or source: Bridgeport Rolling Mills Company.

ANALYSIS OF WEAR BEHAVIOR OF A NOVEL MAGNESIUM METAL–METAL COMPOSITE

2020 ◽  
Vol 27 (10) ◽  
pp. 1950228
Author(s):  
S. SATHISH ◽  
V. ANANDAKRISHNAN ◽  
MANOJ GUPTA
Keyword(s):  
Wear Behavior ◽  
Weight Ratio ◽  
High Strength ◽  
Dry Sliding Wear ◽  
Metal Composite ◽  
Magnesium Metal ◽  
Pareto Analysis ◽  
Metal Metal ◽  
Pin On Disc ◽  
Melt Deposition

The need of engineered materials with high strength to weight ratio was instrumental for the development of a novel magnesium metal–metal composite with the addition of titanium (reinforcement) and aluminum (alloying element) through disintegrated melt deposition technique. The X-ray diffraction analysis and scanning electron microscopy analysis used to explore the metallurgical insights of the developed magnesium metal–metal composite. Wear tests were carried out with pin-on-disc equipment by varying the input parameters load and sliding velocity over a sliding distance of 2000[Formula: see text]m. Wear was obtained as the output from the experiments, and the same was analyzed through Pareto analysis of variance, to identify the significant parameters. Also, a fuzzy logic-based model was developed to predict the wear behavior of the metal–metal composite. The wear mechanisms involved in the dry sliding wear behavior were analyzed through worn surface analysis and wear debris analysis.

Wear Behavior of Biodegradable Mg–5Zn–1Y–(0–1)Ca Magnesium Alloy in Simulated Body Fluid

2019 ◽  
Vol 26 (3) ◽  
pp. 395-407 ◽  
Author(s):  
Asma Ghanbari ◽  
Hassan Jafari ◽  
Faramarz Ashenai Ghasemi
Keyword(s):  
Magnesium Alloy ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Wear Behavior

Effect of Polymorphic Zirconia Phases on the Mechanical and Wear Properties of Cr3C2-NiCr Cermets

2010 ◽  
Vol 64 ◽  
pp. 59-64
Author(s):  
Yahya Kemal Tür ◽  
Ali Özer ◽  
Cihangir Duran
Keyword(s):  
Corrosion Resistance ◽  
Elastic Modulus ◽  
Sintering Temperature ◽  
Tetragonal Zro2 ◽  
Wear Properties ◽  
High Corrosion Resistance ◽  
Zro2 Content ◽  
Impulse Excitation ◽  
Wear Tests ◽  
Cutting Speeds

Cr3C2-NiCr type cermets are used in cutting technology for their low sintering temperatures and relatively low densities. Their high corrosion resistance at high cutting speeds and high temperatures increases the interest to these materials. In this study, a powder mixture of 75wt% Cr3C2 and 25wt% NiCr with a Ni-Cr ratio of 4/1 by weight was sintered at 1350°C as the master composite. 3 mol % Y2O3 stabilized tetragonal ZrO2 and 8 mol % Y2O3 stabilized cubic ZrO2 powders were added to study the effect of ZrO2 content on the mechanical and wear properties of Cr3C2-NiCr cermets at the same sintering temperature. SEM and EDX analysis were performed for identifying microstructures. Elastic modulus and microhardness of master and doped cermets were measured by impulse excitation technique and Vickers (HV10), respectively. Wear tests were conducted by ball on reciprocating flat method to characterize the wear properties.

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