scholarly journals Effects of laser sintering processing time and temperature on changes in polyamide 12 powder particle size, shape and distribution

2014 ◽  
Author(s):  
C. Mielicki ◽  
B. Gronhoff ◽  
J. Wortberg
Keyword(s):  
Particle Size ◽  
Powder Particle ◽  
Processing Time ◽  
Laser Sintering ◽  
Powder Particle Size ◽  
Polyamide 12

Effect of Powder Particle Size of Tin Based Alloy Sintered via Hybrid Microwave and Conventional Furnace

2014 ◽  
Vol 575 ◽  
pp. 160-164
Author(s):  
Arshad Azrina ◽  
Shaiful Anuar Ismail ◽  
A. Nurulhuda ◽  
Yacob Suhaila ◽  
Ali Rafidah
Keyword(s):  
Particle Size ◽  
Powder Particle ◽  
Processing Time ◽  
Microwave Sintering ◽  
Powder Particle Size ◽  
Material Synthesis ◽  
Considerable Potential ◽  
Conventional Furnace ◽  
Conventional Sintering ◽  
Lower Porosity

Microwave processing of metal alloy powders have gained considerable potential in the field of material synthesis. This paper aims to present the effect of powder particle size of Tin Based Alloy sintered using different type of heat source. Tin (Sn) based alloy containing two different sizes, 10 μm and 150 μm of Sn powder were successfully sintered using hybrid microwave and conventional sintering. The overall processing time was reduced by about 93% through microwave sintering. The comparative analysis is based on densification parameter, microhardness, microstructures and XRD detected phases of the specimens. All specimen with 10 μm sintered in microwave exhibited 90% of theoretical density while exhibited 86% lower porosity and possessed 30% higher in microhardness value.

scholarly journals Impact of Particle Size on Performance of Selective Laser Sintering Walnut Shell/Co-PES Powder

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 448
Author(s):  
Yueqiang Yu ◽  
Minzheng Jiang ◽  
Suling Wang ◽  
Yanling Guo ◽  
Ting Jiang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Particle Size ◽  
Powder Particle ◽  
Mechanical Test ◽  
Selective Laser Sintering ◽  
Particle Diameter ◽  
Laser Sintering ◽  
Walnut Shell ◽  
Powder Particle Size ◽  
Shell Powder

The agricultural and forestry waste walnut shell and copolyester hot-melt adhesives (Co-PES) powder were selected as feedstock. A kind of low-cost, low-power consumption, and environmentally friendly walnut shell/Co-PES powder composites (WSPC) was used for selective laser sintering (SLS). Though analyzing the size and morphology of walnut shell particle (≤550 μm) as well as performing an analysis of surface roughness, density, and mechanical test of WSPC parts with different particle sizes, results showed that the optimal mechanical performance (tensile strength of 2.011 MPa, bending strength of 3.5 MPa, impact strength of 0.718 KJ/m2) as walnut shell powder particle size was 80 to 120 μm. When walnut shell powder particle diameter was 120 to 180 μm, the minimum value of surface roughness of WSPC parts was 15.711 μm and density was approximately the maximum (0.926 g/cm3).

Behavior of Microwave Heating of 316 Stainless Steel Green Body

2014 ◽  
Vol 936 ◽  
pp. 1694-1700
Author(s):  
Zhi Wei Li ◽  
Kai Yong Jiang ◽  
Fei Wang ◽  
Ji Liang Zhang
Keyword(s):  
Particle Size ◽  
Stainless Steel ◽  
Microwave Heating ◽  
Powder Particle ◽  
Microwave Power ◽  
Arc Discharge ◽  
Steel Powder ◽  
Powder Particle Size ◽  
Auxiliary Heating ◽  
316 Stainless Steel

This paper mainly introduces the mechanism of microwave heating: electric conduction loss, eddy current loss and arc discharge. The microwave heating behavior of 316 stainless steel powder body which made by gel casting was investigated in the paper. Experiments on different microwave power, powder particle size, and the content of auxiliary heating material showed that the smaller the powder particle size, the larger microwave power and auxiliary heating materials help 316 stainless steel body for sintering.

scholarly journals Influence of nitrogen and air atmosphere during thermal treatment on micro and nano sized powders and sintered TiO2 specimens

2014 ◽  
Vol 46 (3) ◽  
pp. 365-375
Author(s):  
N. Labus ◽  
S. Mentus ◽  
Z.Z. Djuric ◽  
M.V. Nikolic
Keyword(s):  
Phase Transition ◽  
Particle Size ◽  
Powder Particle ◽  
Rutile Phase ◽  
Nitrogen Atmosphere ◽  
Powder Particle Size ◽  
Nano Tio2 ◽  
Thermo Gravimetric ◽  
Air Atmosphere ◽  
Thermal Techniques

The influence of air and nitrogen atmosphere during heating on TiO2 nano and micro sized powders as well as sintered polycrystalline specimens was analyzed. Sintering of TiO2 nano and micro powders in air atmosphere was monitored in a dilatometer. Non compacted nano and micro powders were analyzed separately in air and nitrogen atmospheres during heating using thermo gravimetric (TG) and differential thermal analysis (DTA). The anatase to rutile phase transition temperature interval is influenced by the powder particle size and atmosphere change. At lower temperatures for nano TiO2 powder a second order phase transition was detected by both thermal techniques. Polycrystalline specimens obtained by sintering from nano powders were reheated in the dilatometer in nitrogen and air atmosphere, and their shrinkage is found to be different. Powder particle size influence, as well as the air and nitrogen atmosphere influence was discussed.

Effect of Tungsten Powder Particle Size and Shape on Consolidation and Microstructure of W-xCu Composites by Selective Laser Melting

2016 ◽  
Vol 43 (2) ◽  
pp. 0203007
Author(s):  
闫岸如 Yan Anru ◽  
杨恬恬 Yang Tiantian ◽  
王燕灵 Wang Yanling ◽  
马志红 Ma Zhihong ◽  
杜云 Du Yun ◽  
...  
Keyword(s):  
Particle Size ◽  
Selective Laser Melting ◽  
Powder Particle ◽  
Tungsten Powder ◽  
Powder Particle Size ◽  
Laser Melting ◽  
Size And Shape ◽  
Particle Size And Shape

Influence of the Powder Particle Size on the Denudated Zone Width at Selective Laser Melting

2020 ◽  
Vol 989 ◽  
pp. 816-820
Author(s):  
Roman Sergeevich Khmyrov ◽  
R.R. Ableyeva ◽  
Tatiana Vasilievna Tarasova ◽  
A.V. Gusarov
Keyword(s):  
Particle Size ◽  
Selective Laser Melting ◽  
Powder Particle ◽  
Powder Particle Size ◽  
Adhesion Forces ◽  
Laser Melting ◽  
Friction Forces ◽  
Single Bead ◽  
Powder Particles

Mass transfer in the laser-interaction zone at selective laser melting influences the quality of the obtained material. Powder particles displacement during the formation of the single bead is experimentally studied. The so-called denudated zone was visualized by metallography. It was determined that increasing the powder particle size leads to widening the denudated zone. This can signify that the adhesion forces between powder particles prevail over the friction forces.

Impact of the powder particle size on the oxidative stability of microencapsulated oil

2020 ◽  
Vol 364 ◽  
pp. 115-122 ◽  
Author(s):  
Annika Linke ◽  
Jörg Hinrichs ◽  
Reinhard Kohlus
Keyword(s):  
Particle Size ◽  
Oxidative Stability ◽  
Powder Particle ◽  
Powder Particle Size

A powder particle size effect on ceramic powder based separator for lithium rechargeable battery

2005 ◽  
Vol 146 (1-2) ◽  
pp. 779-783 ◽  
Author(s):  
Daigo Takemura ◽  
Shigeru Aihara ◽  
Kouji Hamano ◽  
Makiko Kise ◽  
Takashi Nishimura ◽  
...  
Keyword(s):  
Particle Size ◽  
Size Effect ◽  
Powder Particle ◽  
Ceramic Powder ◽  
Particle Size Effect ◽  
Rechargeable Battery ◽  
Powder Particle Size ◽  
Lithium Rechargeable Battery
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