In-situ formation of Al 2 O 3 /Al core-shell from waste material: Production of porous composite improved by graphene

Zawrah, M.F.; Taha, Mohammed A.; Mostafa, H. Abo

doi:10.1016/j.ceramint.2018.03.101

Cited by 46 publications

(9 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The fracture toughness, K IC , of the samples was determined from the indentation fracture using a Vickers microhardness tester. K IC was calculated using equation (2) [19,20]:…”

Section: Mechanical Properties Of Glassmentioning

confidence: 99%

Thermal, mechanical and electrical properties of lithium phosphate glasses doped with copper oxide

et al. 2019

View full text Add to dashboard Cite

Lithium phosphate glasses with the basic composition (P 2 O 5 50 and Li 2 O 50 mol%) series by the addition of copper oxide (0, 10, 15 and 20 g/100 g) were prepared by a melt quenching technique. Fourier-transform infrared (FTIR) absorption spectra and X-ray diffraction (XRD) analysis were used to characterize the glass samples. Thermal expansion and mass density were also measured. The different mechanical properties of the prepared glasses were measured by an ultrasonic non-destructive technique. Additionally, both frequency and temperature dependence of alternating-current conductivity were measured in the frequency range of 40 Hz-1 MHz and the temperature range of 308-488 K. Moreover, direct current conductivity was also measured for the same temperature range. FTIR measurements confirm the appearance of the bands of phosphate groups and the assumption of bonds formed between Cu and P. XRD spectra approve the amorphous nature of the studied glasses. Thermal expansion and mass density of the prepared samples show an increase in values by increasing the CuO content. The mechanical properties of the studied glasses (hardness (H v), Young's modulus (E), elastic modulus (L), bulk modulus (K), shear modulus (G) and Poisson's ratio (ν)) were positively affected by the CuO content, reflecting a better packed structure. Furthermore, the electrical conductivity values of the prepared glasses are identified to increase with an increase in both temperature and CuO content. Such trends agree with the data obtained by thermal expansion and FTIR. The progressive addition of CuO is assumed to improve thermal, mechanical and electrical properties of the prepared lithium phosphate glasses.

show abstract

“…The fracture toughness, K IC , of the samples was determined from the indentation fracture using a Vickers microhardness tester. K IC was calculated using equation (2) [19,20]:…”

Section: Mechanical Properties Of Glassmentioning

confidence: 99%

Thermal, mechanical and electrical properties of lithium phosphate glasses doped with copper oxide

et al. 2019

View full text Add to dashboard Cite

show abstract

“…up to 1100ºC, 1150ºC, 1200ºC, and kept for 120min. Then, the furnace was turned off and the sintered specimens were cooled over 8 h in the furnace [38][39][40][41][42]. Figure 1 shows the images of sintered specimens.…”

Section: Methodsmentioning

confidence: 99%

Effect of Hydroxyapatite Nano Rods on Sinterability and Bioactivity of Fe-14Mn-6Si Alloy Prepared By Powder Metallurgy

Zawrah

Allah

Awad

et al. 2021

Preprint

View full text Add to dashboard Cite

Recently, there is a great of industrial interest on the production of biodegradable metal/ceramic composites. The casted Fe-Mn-Si alloys prepared by casting tools have low biodegradable rate; so it is important to seek a method as powder metallurgy (PM) to prepare porous bodies with increased biodegradability. Moreover, the addition of hydroxyapatite (HA) nano rods to that alloy increases its bioactivity and forms composite with improved properties. In the present study, Fe-14Mn-6Si/HA composites were prepared by PM and sintered at different temperatures, i.e. 1100, 1150 and 1200oC. Also, the effect of HA nano-rods content on the composite properties (physical properties, microstructure and micro hardness) and bioactivity were studied. The results revealed that bulk density increased with increasing sintering temperature up to 1150oC; then decreased at 1200oC. Also, the bulk density increased with increasing the HA content. Moreover, the hardness of the sintered composites increased with increasing sintering temperature and HA amount. The maximum hardness values were 1293 & 1792 MPa for the specimens which contain 8 % HA and sintered at 1150 and 1200oC, respectively. The bioactivity of the prepared composites increased with increasing HA amount. The highest bioactivity was for the composite that contains 8 wt.% HA.

show abstract

“…up to 1100ºC, 1150ºC, 1200ºC, and kept for 120min. Then, the furnace was turned off and the sintered specimens were cooled over 8 h in the furnace [37][38][39][40][41]. Fig.…”

Section: Methodsmentioning

confidence: 99%

Effect of hydroxyapatite nano rods on sinterability, hardness and bioactivity of Fe-14Mn-6Si alloy prepared by powder metallurgy

Zawrah

Allahb

Awad³

et al. 2021

Sohag Engineering Journal

View full text Add to dashboard Cite

Recently, there is a great of industrial interest on the production of biodegradable metal/ceramic composites. The casted Fe-Mn-Si alloys prepared by casting tools have low biodegradable rate; so it is important to seek a method as powder metallurgy (PM) to prepare porous bodies with increased biodegradability. Moreover, the addition of hydroxyapatite (HA) nano rods to that alloy increases its bioactivity and forms composite with improved properties. In the present study, Fe-14Mn-6Si/HA composites were prepared by PM and sintered at different temperatures, i.e. 1100, 1150 and 1200 o C. Also, the effect of HA nano-rods content on the composite properties (physical properties, microstructure and micro hardness) and bioactivity were studied. The results revealed that bulk density increased with increasing sintering temperature up to 1150 o C; then decreased at 1200 o C. Also, the bulk density increased with increasing the HA content. Moreover, the hardness of the sintered composites increased with increasing sintering temperature and HA amount. The maximum hardness values were 1293 & 1792 MPa for the specimens which contain 8 % HA and sintered at 1150 and 1200 o C, respectively. The bioactivity of the prepared composites increased with increasing HA amount. The highest bioactivity was for the composite that contains 8 wt.% HA.

show abstract

In-situ formation of Al 2 O 3 /Al core-shell from waste material: Production of porous composite improved by graphene

Cited by 46 publications

References 48 publications

Thermal, mechanical and electrical properties of lithium phosphate glasses doped with copper oxide

Thermal, mechanical and electrical properties of lithium phosphate glasses doped with copper oxide

Effect of Hydroxyapatite Nano Rods on Sinterability and Bioactivity of Fe-14Mn-6Si Alloy Prepared By Powder Metallurgy

Effect of hydroxyapatite nano rods on sinterability, hardness and bioactivity of Fe-14Mn-6Si alloy prepared by powder metallurgy

Contact Info

Product

Resources

About