scholarly journals Development of Hot Equal Channel Angular Processing (ECAP) Consolidation Technique in the Production of Boron Carbide(B4C)-Reinforced Aluminium Chip (AA6061)-Based Composite

2021 ◽  
Vol 10 (3) ◽  
pp. 607-621
Author(s):  
Sami Al-Alimi ◽  
Mohd Amri Lajis ◽  
Shazarel Shamsudin ◽  
Nur Kamilah Yusuf ◽  
Boon Loong Chan ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Boron Carbide ◽  
Matrix Composites ◽  
Equal Channel Angular Processing ◽  
Atomic Force ◽  
Mechanical And Physical Properties ◽  
Maximum Compressive Strength ◽  
Number Of Passes ◽  
Boron Carbide B4c

The production of metal matrix composites (MMCs) through recycled materials is a cost-saving process. However, the improvement of the mechanical and physical properties is another challenge to be concerned. In this study, recycled aluminium 6061 (AA6061) chips reinforced with different volumetric fractions of boron carbide (B4C) were produced through hot equal channel angular processing (ECAP). Response surface methodology (RSM) was carried out to investigate the dependent response (compressive strength) with independent parameters such as different volumetric fractions (5-15%) of added contents of B4C and  preheating temperature (450 – 550°C). Also, the number of passes were examined to check the effect on the mechanical and physical properties of the developed recycled AA6061/B4C composite. The results show that maximum compressive strength and hardness of recycled AA6061/B4C were 59.2 MPa and 69 HV respectively at 5% of B4C contents. Likewise, the density and number of pores increased, which were confirmed through scanning electron microscope (SEM) and atomic force microscopes (AFM) analysis. However, the number of passes enhanced the mechanical and physical properties of the recycled AA6061/B4C composite. Therefore, the maximum compressive strength and hardness achieved were 158 MPa and 74.95 HV for the 4th pass. Moreover, the physical properties of recycled AA6061/B4C composite become denser of 2.62 g/cm3 at the 1st pass and 2.67 g/cm3 for the 4th pass. Thus, it can be concluded that the B4C volumetric fraction and number of passes have a significant effect on recycled AA6061 chips.

scholarly journals Pengaruh Sintering Serbuk Batuan Basalt sebagai Bahan Penguat pada Komposit Polyester terhadap Sifat Fisik dan Mekanik

2021 ◽  
Vol 12 (2) ◽  
pp. 391-399
Author(s):  
Yusup Hendronursito ◽  
◽  
Asep Andri Saputra ◽  
Tumpal Ojahan Rajaguguk ◽  
Slamet Sumardi ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Volume Fraction ◽  
Polymer Matrix Composites ◽  
Sintering Temperature ◽  
Construction Material ◽  
Matrix Composites ◽  
Rock Powder ◽  
Mechanical And Physical Properties ◽  
Basalt Rock

Basalt rock has great potential in Lampung Province but is only used as a building construction material. Basalt has superior characteristics such as abrasion/wear resistance, compressive strength and chemical reaction resistance making it suitable as a filler or reinforcement for composites. This study aims to determine the effect of basalt rock powder sintering as a reinforcing filler on the mechanical and physical properties of polymer matrix composites. The parameters used included variations in sintering temperature: 8500C, 9500C, and 1.0500C, variations in particle size: 100 < X < 150 mesh, 150 < Y < 200 mesh and 200 < Z < 270 mesh, and the volume fraction comparison of basalt sintering powder and polyester resin. 70: 30%, 80: 20%, and 90: 10%. The experimental design uses the L9 3^3 taguchi orthogonal array run 9 specimens. Taguchi analysis shows that the parameters that affect the mechanical and physical properties are the sintering temperature. sintering temperature contributed 61.77% to wear, and 87.58% to compressive strength, and 95.32% to composite density. The experimental results with the best value obtained a wear value of 0.235 x 10-7mm2 / kg, a compressive strength of 118.873 MPa, and a density of 2.272 gr/cm3.

scholarly journals Effect of firing temperature on physico-mechanical properties of contemporary clay brick productions in Lalitpur, Nepal

2020 ◽  
Vol 55 (1) ◽  
pp. 43-52 ◽  
Author(s):  
NB Bohara ◽  
DB Ghale ◽  
YP Chapagain ◽  
N Duwal ◽  
J Bhattarai
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Bulk Density ◽  
Firing Temperature ◽  
Apparent Porosity ◽  
Clay Brick ◽  
Mechanical And Physical Properties ◽  
Fired Bricks ◽  
Maximum Compressive Strength

Effect of firing temperature on some physico-mechanical properties of ten brick samples, those were composed by feldspars, quartz, alumina-rich spinel, primary mullite and hematite phases, was investigated in accordance with ASTM standards. The brick samples fired between 700° to 1100° C showed 11-23 % water adsorptivity (WA), 19-37 % apparent porosity (AP) and 1.50-1.65 g/cm3 bulk density (BD) indicate good physical properties. The maximum compressive strength (CS) of the fired-bricks at 950° to 1000° C was found to be between 15.6 and 17.1 MPa. At 700°-1000° C firing temperatures, the CS of these bricks is found to be increased exponentially with decreasing of both WA and AP, however it is found to be increased with increasing the BD. Consequently, it can be said that there is good correlation between mechanical and physical properties of the fired-brick samples up to the firing temperature of 1000° C. Bangladesh J. Sci. Ind. Res.55(1), 43-52, 2020

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

scholarly journals Interfacial Aspects of Metal Matrix Composites Prepared from Liquid Metals and Aqueous Solutions: A Review

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1400
Author(s):  
Peter Baumli
Keyword(s):  
Aqueous Solutions ◽  
Physical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Liquid Metals ◽  
Interfacial Phenomena ◽  
Matrix Composites ◽  
Good Adhesion ◽  
Mechanical And Physical Properties ◽  
The Matrix

The paper reviews the preparation of the different metallic nanocomposites. In the preparation of composites, especially in the case of nanocomposites, interfacial phenomena play an important role. This review summarizes the literature on various interfacial phenomena, such as wettability and reactivity in the case of casting techniques and colloidal behavior in the case of electrochemical and electroless methods. The main contribution of this work lies in the evaluation of collected interfacial phenomena and difficulties in the production of metal matrix composites, for both nano-sized and micro-sized reinforcements. This study can guide the composite maker in choosing the best criteria for producing metal matrix composites, which means a real interface with good adhesion between the matrix and the reinforcement. This criterion results in desirable mechanical and physical properties and homogenous dispersion of the reinforcement in the matrix.

Effect of Firing Temperature on Mechanical and Physical Properties of Porcelain Balls as Grinding Media

2017 ◽  
Vol 888 ◽  
pp. 37-41
Author(s):  
Hasrul Yahya ◽  
Mohd Roslee Othman ◽  
Zainal Arifin Ahmad
Keyword(s):  
Compressive Strength ◽  
Physical Properties ◽  
Water Absorption ◽  
Firing Temperature ◽  
Chemical Resistance ◽  
Firing Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Grinding Media ◽  
Mechanical And Physical Properties

Porcelain balls as grinding media are produced by firing process of clay, quartz and feldspar mixtures. This application need high technological properties such as high compressive strength and hardness, wear resistance, low water absorption and excellent chemical resistance. These properties are associated with higher firing temperatures. The porcelain balls were prepared by mixing 30 wt.% clay, 40 wt.% feldspar and 30 wt.% quartz. The samples were sintered at 1200°C, 1230°C, 1250°C, 1270°C and 1300°C for 2 hours with heating rate of 3°C/min. Both green powder and fired samples were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF) and scanning electron microscopy (SEM).The properties of the fired samples were evaluated by compressive strength, hardness, shrinkage, water absorption, bulk density, and porosity measurement. Increasing of compressive strength, hardness and density are associated with increasing of firing temperatures. Porcelain balls PB1 and PB2 can be produced as grinding media with optimum mechanical and physical properties at firing temperature 1270°C and 1250°C, respectively.

Tests of Selected Properties of Aggregates on Ceramic Wastes

2016 ◽  
Vol 677 ◽  
pp. 246-253
Author(s):  
Artur Koper
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Physical Properties ◽  
Bulk Density ◽  
Water Cycle ◽  
Free Water ◽  
Coarse Aggregates ◽  
Sanitary Ceramic ◽  
Mechanical And Physical Properties ◽  
Ceramic Sintering

The article analysed the results of comparative sampling of selected properties of concretes with addition of aggregates from sanitary ceramic wastes. For the need of the analyses there were created concretes of various w/c coefficients (0,35, 0,50, 0,75) and with diverse percentage participation of ceramic wastes aggregates (exchange of 50% and 100% coarse aggregates into ceramic). The range of performed samples and analyses included sampling of mechanical and physical properties of concretes and the aggregates used. What was under analysis: for aggregates – sampling of bulk density, absorbency, resistance to crushing; for concretes from ceramic wastes – sampling of density, absorbency, compressive strength, tensile strength and compressive strength after roasting. Roasting was performed according to defined temperature cycles: cycle I - from 0 to 150OC (vaporisation of free water), cycle II - from 150 to 550OC (separation of chemically combined water), cycle III - beyond 550OC (change of hydraulic combination into ceramic, sintering).

scholarly journals Influence of Ta2O5 doping on mechanical and biological properties of silicate glass-ceramics

2016 ◽  
Vol 34 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Madeeha Riaz ◽  
Rehana Zia ◽  
Farhat Saleemi ◽  
Farooq Bashir ◽  
Riaz Ahmad ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Silicate Glass ◽  
Glass Ceramics ◽  
Biological Properties ◽  
High Load ◽  
Apatite Formation ◽  
Strength Tests ◽  
Mechanical And Physical Properties ◽  
Maximum Compressive Strength

AbstractThe mechanical properties of silicate glass-ceramics were evaluated based on the compressive strength tests. It was found that Ta2O5 addition improved densification, refinement of the microstructure and toughening of the bodies. The maximum compressive strength of the bodies with 1 mol% Ta2O5 was increased 3-fold (245.92 ±0.3 MPa) in comparison to undoped glass-ceramics which was measured to be 89.04 ±0.3 MPa, while for 3 mol% it became 4-fold (387.12 ±0.4 MPa) greater. The addition of Ta2O5 stabilized the system by controlling the biodegradation of the glass-ceramics. It effectively depressed the apatite formation as by addition of 3 mol% Ta2O5 no apatite layer was observed. It may be concluded from this study that mechanical and physical properties can be improved by the addition of Ta2O5, but at a cost of bioactivity. Still the optimized composition having Ta2O5 ⩽ 1 mol% may provide appropriate strength of biomaterials for high load bearing applications.

scholarly journals PRODUCTION OF REFRACTORY STUDIO KILN SHELVES FROM AFOWA CLAY

2016 ◽  
Vol 6 (2) ◽  
pp. 53
Author(s):  
Festus Uzzi
Keyword(s):  
Compressive Strength ◽  
Reference Material ◽  
Physical Properties ◽  
General Principle ◽  
Refractory Materials ◽  
Creative Development ◽  
X Ray ◽  
Mechanical And Physical Properties

ABSTRACTThis study investigates production of refractory studio kiln shelves using Afowa clay. In solving firing problems, kiln was the earliest tool used to revolutionalize pottery productions, while shelves are among the furniture inside the kiln where ceramic green/bisque wares are stacked for firing. Most scholars in Nigeria who have written on kiln focused on construction of kiln, little has been done about kiln shelves production. Firing of pottery wares plays important roles in production of earthen or glaze wares. This paper deals with the production of shelves and suggests possible ways it can be used for stocking the kiln. It x-ray the problems associated with cracks on shelves and how to check them. The researcher also elaborates on different methods of propping shelves (bats) in stocking a kiln. Kiln setting for glaze firing follows a general principle of proper foot-cleaning and non-contact. The mechanical and physical properties of the composites are determined. Findings are made to show that there are improvement in hardness value, strength and compressive strength of the developed composites. Also, this research will impact positively on potters and institutions and will further open up research and creative development. It will hopefully discourage further importation of refractory materials and serves as reference material to potters. Keywords: Production, studio, kiln, Firing and shelves.

Sign in / Sign up

Export Citation Format

Share Document