Mould resistance of Moso bamboo treated by two step heat treatment with different aqueous solutions

Fine powders of intermetallic NiAl and Ni3Al were synthesized through organometallic precursors, which were coprecipitated from aqueous solutions of NiCl2 and AlCl3 by the addition of ammonium benzoate and hydradinium monochloride as precipitants. Ni3Al and NiAl were synthesized by a two-step heat treatment of the precursors. The initial step was the thermal decomposition of organic groups to form homogeneous mixtures of Ni3C, amorphous Al2O3, and free C below 1000 °C. The other step was the reaction above 1300 °C to form the intermetallics. Single phase powders of NiAl and Ni3Al with the particle size less than 3 μm were obtained above 1300 and 1400 °C, respectively.

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Effect of Two-step Heat Treatment Processes on the Formation of Protein Particles and Oil Droplets in Soymilk

Food Science and Technology Research ◽

10.3136/fstr.26.445 ◽

2020 ◽

Vol 26 (3) ◽

pp. 445-450

Author(s):

Makoto Shimoyamada ◽

Hironori Shikano ◽

Shingo Mogami ◽

Makoto Kanauchi ◽

Hayato Masuda ◽

...

Keyword(s):

Heat Treatment ◽

Oil Droplets ◽

Treatment Processes ◽

Protein Particles ◽

Step Heat Treatment

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Water Resistance and Creep Behavior of Heat-Treated Moso Bamboo Determined by the Stepped Isostress Method

Polymers ◽

10.3390/polym13081264 ◽

2021 ◽

Vol 13 (8) ◽

pp. 1264

Author(s):

Teng-Chun Yang ◽

Tung-Lin Wu ◽

Chin-Hao Yeh

Keyword(s):

Heat Treatment ◽

Water Absorption ◽

Creep Behavior ◽

Heat Treatment Temperature ◽

Water Resistance ◽

Absorption Efficiency ◽

Treatment Temperature ◽

Moso Bamboo ◽

Phyllostachys Pubescens ◽

Heat Treated

The influence of heat treatment on the physico-mechanical properties, water resistance, and creep behavior of moso bamboo (Phyllostachys pubescens) was determined in this study. The results revealed that the density, moisture content, and flexural properties showed negative relationships with the heat treatment temperature, while an improvement in the dimensional stability (anti-swelling efficiency and anti-water absorption efficiency) of heat-treated samples was observed during water absorption tests. Additionally, the creep master curves of the untreated and heat-treated samples were successfully constructed using the stepped isostress method (SSM) at a series of elevated stresses. Furthermore, the SSM-predicted creep compliance curves fit well with the 90-day full-scale experimental data. When the heat treatment temperature increased to 180 °C, the degradation ratio of the creep resistance (rd) significantly increased over all periods. However, the rd of the tested bamboo decreased as the heat treatment temperature increased up to 220 °C.

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Effect of Heat Treatment on the Microstructure and Property of TiAl Alloys Prepared by Gas Atomization Powders

Materials Science Forum ◽

10.4028/www.scientific.net/msf.747-748.497 ◽

2013 ◽

Vol 747-748 ◽

pp. 497-501

Author(s):

Na Liu ◽

Zhou Li ◽

Guo Qing Zhang ◽

Hua Yuan ◽

Wen Yong Xu ◽

...

Keyword(s):

Heat Treatment ◽

Heat Treatment Temperature ◽

Tial Alloy ◽

Lamellar Microstructure ◽

Treatment Temperature ◽

Gas Atomization ◽

Thermally Induced ◽

Heat Treated ◽

Fine Duplex ◽

Step Heat Treatment

Powder metallurgical TiAl alloy was fabricated by gas atomization powders, and the effect of heat treatment temperature on the microstructure evolution and room tensile properties of PM TiAl alloy was investigated. The uniform fine duplex microstructure was formed in PM TiAl based alloy after being heat treated at 1250/2h followed by furnace cooling (FC)+ 900/6h (FC). When the first step heat treatment temperature was improved to 1360/1h, the near lamellar microstructure was achieved. The ductility of the alloy after heat treatment improved markedly to 1.2% and 0.6%, but the tensile strength decreased to 570MPa and 600MPa compared to 655MPa of as-HIP TiAl alloy. Post heat treatment at the higher temperature in the alpha plus gamma field would regenerate thermally induced porosity (TIP).

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Effect of Hydrothermal Treatment with Different Aqueous Solutions on the Mold Resistance of Moso Bamboo with Chemical and FTIR Analysis

BioResources ◽

10.15376/biores.8.1.371-382 ◽

2012 ◽

Vol 8 (1) ◽

Cited By ~ 3

Author(s):

Dali Cheng ◽

Shenxue Jiang ◽

Qisheng Zhang

Keyword(s):

Aqueous Solutions ◽

Hydrothermal Treatment ◽

Moso Bamboo ◽

Ftir Analysis ◽

Mold Resistance

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The Effect of Two-Step Heat Treatment Parameters on Microstructure and Mechanical Properties of 42SiMn Steel

Metals ◽

10.3390/met7120537 ◽

2017 ◽

Vol 7 (12) ◽

pp. 537 ◽

Cited By ~ 4

Author(s):

Ludmila Kučerová

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Microstructure And Mechanical Properties ◽

Step Heat Treatment

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Zeolites as alcohol adsorbents from aqueous solutions

Acta periodica technologica ◽

10.2298/apt0637083c ◽

2006 ◽

pp. 83-87 ◽

Cited By ~ 13

Author(s):

Blagica Cekova ◽

Dragi Kocev ◽

Elena Kolcakovska ◽

Daniela Stojanova

Keyword(s):

Heat Treatment ◽

Aqueous Solutions ◽

Pore Volume ◽

Industrial Wastewater ◽

Organic Molecules ◽

Adsorption Process ◽

Aqueous Acetone ◽

Heats Of Adsorption ◽

Series Of Experiments ◽

Low Costs

The potential usage of zeolites as adsorbents for the removal of organic molecules from water was investigated in a series of experiments with aqueous solutions of lower alcohols. This could represent a simple solution to the problem of cleaning up industrial wastewater as well as recovering valuable chemicals at relatively low costs. Adsorption isotherms of the Langmuir type were applied, and calculations showed that the amount of propanol adsorbed on silicalite corresponded to approximately 70% of the pore volume. The adsorption process is simple, and recovery of the more concentrated products is easily done by heat treatment and/or at lowered pressures. Adsorption experiments with aqueous acetone showed that silicalite had approximately the same adsorption capacity for acetone as for n-propanol. Heats of adsorption were determined calorimetrically.

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Biosorption of Lanthanides from Aqueous Solutions Using PretreatedBuccinum tenuissimumShell Biomass

Bioinorganic Chemistry and Applications ◽

10.1155/2010/804854 ◽

2010 ◽

Vol 2010 ◽

pp. 1-10 ◽

Cited By ~ 5

Author(s):

Yusuke Koto ◽

Naoki Kano ◽

Yudan Wang ◽

Nobuo Sakamoto ◽

Hiroshi Imaizumi

Keyword(s):

Crystal Structure ◽

Heat Treatment ◽

Rare Earth ◽

Surface Morphology ◽

Aqueous Solutions ◽

Specific Surface ◽

Calcium Oxide ◽

Original Sample ◽

Freundlich Isotherms ◽

Langmuir And Freundlich Isotherms

Biosorption experiment from aqueous solutions containing known amount of rare earth elements (REEs) using pre-treatedBuccinum tenuissimumshell was explored to evaluate the efficiency of shell biomass as sorbent for REEs. In this work, four kinds of sieved shell samples: (a) “Ground original sample”, (b) “Heat-treatment (480∘C, 6 hours) sample”, (c) “Heat-treatment (950∘C, 6 hours) sample” and (d) “Heat-treatment (950∘C, 6 hours) and water added sample” were used. Furthermore, to confirm the characteristics of the shell biomass, the crystal structure, the surface morphology, and the specific surface area of these shell samples were determined. Consequently, the following matters have been mainly clarified. (1) The crystal structure of the shell biomass was transformed from aragonite (CaCO3) into calcite (CaCO3) phase by heat-treatment (480∘C, 6 hours); then mainly transformed into calcium oxide (CaO) by heat-treatment (950∘C, 6 hours), and calcium hydroxide(Ca(OH)2)by heat-treatment (950∘C, 6 hours) and adding water. (2) The shell biomass showed excellent sorption capacity for lanthanides. (3) Adsorption isotherms using the shell biomass can be described by Langmuir and Freundlich isotherms satisfactorily for lanthanides except “heat-treatment (950∘C, 6 hours) sample”. (4) Shell biomass (usually treated as waste material) can be an efficient sorbent for lanthanides in future.

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