PURPOSE The purpose of the present study was to evaluate the flexural strength of the joint between glass-infiltrated alumina frames and the experimental adjusting agent (MA modifier) that contains alumina and magnesia. METHODS A commercially available adjusting agent (Optimizer), a slurry of alumina powder (Alumina modifier), and a bulk specimen (joint-free alumina) were used as controls. Be...

Geopolymer is an inorganic form of alumina-silica that synthesized through materials containing lots silica (Si) and alumina (Al) originating from nature or industrial by-products. The geopolymer binder a two-component system consisting solid components have sufficient amounts SiO2 Al2O3 to compounds such as fly ash, rice straw pozzolan, laterite soil, slag, etc. This study aims analyze the com...

in the present investigation surface modification of silica nanoparticles by alumina was carried out by sol-gel process. fourier transform infrared (ftir) and x-ray fluorescence (xrf) confirmed the synthesis of silica and the surface modification as alumina is anchored to silica surface. field emission scanning electron microscopy (fesem) and transmission electron microscopy (tem) investigation...

To evaluate whether the increase in serum transcobalamin I, seen in patients with carcinoma, is caused by synthesis of R-binder to tumour cells, the distribution of vitamin B12 R-binder in 125 malignant growths of the digestive tract was studied. Positive staining for R-binder with immunoperoxidase was observed in 85 (70%) carcinomas. Positive staining for R-binder was observed in all four chol...

Porous alumina films had been fabricated by anodizing from aluminum films after an electropolishing procedure. Alumina stripes without pores can be distinguished on the surface of the porous alumina films. The width of the alumina stripes increases proportionally with the anodizing voltage. And the pores tend to be initiated close to the alumina stripes. These phenomena can be ascribed to the e...

Zeolite-based catalyst bodies are commonly employed in a range of important industrial processes. Depending on the binder and shaping method chosen, vast differences in the reactivity, selectivity and stability are obtained. Here, three highly complementary micro-spectroscopic techniques were employed to study zeolite ZSM-5-binder interactions in SiO2-, Al2O3-, SiO2 : Al2O3- (2 : 1 mix) and kao...

This paper investigates new approaches for the blending and plastification of ceramic powder with a binder to form fused deposition (FDC) feedstock. The fabrication highly filled filaments was accomplished using granulation by agitation technique, followed twin-screw extruder homogenization single-screw filament extrusion. feedstocks are based on alumina (Al2O3) powders, which were prepared an ...

Graphene-encapsulated nickel nanoclusters are a feasible strategy to inhibit the deactivation of nickel-based catalysts. In this work, graphene-encapsulated catalysts (Ni@C/HZSM-5) were prepared by compression forming process, using pseudo-boehmite, Al2O3, and ZrO2 as binders. The pseudo-boehmite was gradually transformed from amorphous crystalline alumina at high temperatures, which destroyed ...

The purpose of this study is to investigate the effect printing parameters on physical and mechanical properties additively manufactured ceramics (alumina zirconia). Sample parts were obtained by extrusion-based additive manufacturing a ceramic-binder mixture subsequent post-processing (debinding sintering). Their (microhardness, flexural strength, toughness) measured correlated with parameters...

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