In this paper, synthesised nanometre sized hydroxyapatite (nano-HAP) powders composed of spherical 30 ± 5 nm part icles were compacted and sintered at temperatures ranging from 650 to 1250°C to form ceramics of varying porosity and mechanical strength. The size, crystalline structure and morphology of both the synthesised nano-HAP particle powders and the compacted and sintered ceramics were in...

High temperatures and under pressure (HTP) processing has been used to study the effects of chemical doping in MgB2. ZrB2, TiB2 and NbB2 were selected as additives since, like MgB2, they have an AlB2-type structure and similar lattice parameters. Dy2O3 was selected as it has been reported to generate nanoscale, secondary intragrain phases in MgB2. While C is known to enter the B-sublattice read...

Nano-additives blended water-diesel emulsion fuel is the alternative fuel for compression ignition (CI) engine that reduce the NOx emission and at the same time increase the brake thermal efficiency due to combined effect of nanoparticles and micro explosion phenomenon of water diesel emulsion. This review paper addresses emulsion, emulsion types, micro-explosion phenomenon of water-diesel emul...

In this paper, the use of gasoline combinations with ethanol and nano oxide particles has been studied in gasoline-based SI EF7 engines. The mixtures are prepared in five emulsions of gasoline with 10% ethanol, gasoline with 10% ethanol and 10ppm nano Mn2O3, gasoline with  10% ethanol and 20ppm nano Mn2O3, gasoline with 10% ethanol and 10ppm nano Co<s...

Single nano high-entropy pyrochlore-type compound (A2B2O7) with 7 different rare-earth cations at site A and 3 metal B equiatomic amounts (7A1/7)2(3B1/3)2O7 is successfully obtained. The powder nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 was fabricated by reacting nitrates (site A) chlorides B) glycine during the combustion reaction. XRD analysis revealed that ...

ceramic ultrafiltration membranes are considered as an alternative for the treatment of both stable water-in-oil and oil-in-water emulsions proved to be more effective in comparison with other conventional techniques. in this study, symmetric macro-porous ceramic membranes are prepared through dry pressing of α-alumina powder and the addition of various binders including poly (vinyl alcohol). t...

Abstract CeO 2 nanoparticles are potential anti-wear additives because of their outstanding and load-bearing capacity. However, the shear-sintering tribo-film formation mechanism oxide limits rate thickness greatly. In this study, by compounding with zinc dioctyl dithiophosphate (ZDDP), ultra-fine modified oleylamine (OM) can quickly form µm ultra-thick tribo-film, which is 10–15 times thicker ...

The cellulose derivative hydroxypropyl methylcellulose (HPMC) has recently been extensively studied and used in mechanical applications. However, the softness susceptibility to deformation of HPMC limited its further In this study, metal nanoparticles (nano-aluminum nano-copper) nano-metal oxide particles (nano-alumina nano-copper oxide) were as additives form a composite film with improved pro...