The effect of high temperature annealing process on crystallization process of polypropylene, mechanical properties, and surface quality of plastic parts

2015 ◽  
Vol 132 (46) ◽  
pp. n/a-n/a ◽  
Author(s):  
Weihua Wang ◽  
Guoqun Zhao ◽  
Xianghong Wu ◽  
Zhen Zhai
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Surface Quality ◽  
Crystallization Process ◽  
Annealing Process ◽  
High Temperature Annealing ◽  
Plastic Parts

Effect of Atmosphere and Holding Time on the Quality of Surface and Mechanical Properties of the Cold-Rolling Plate of Fe-42% Ni (4J42)

2012 ◽  
Vol 560-561 ◽  
pp. 655-660
Author(s):  
Li Juan Li ◽  
Li Hua Liu ◽  
Jing Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Cold Rolling ◽  
Surface Quality ◽  
Annealing Process ◽  
Holding Time ◽  
Annealing Condition ◽  
Nitrogen Ratio

In order to guide atmosphere annealing process in industry, the effect of atmosphere and holding times on the surface quality and mechanical properties of the cold-rolling plate of Fe-42% Ni (4J42) was studied. It is found that in the laboratory, surface qualities of all the samples annealed at different annealing condition are all good enough. When the ratio of hydrogen and nitrogen is below 70%:30%, at different holding time, with increasing of H2 proportion, 4J42’s tensile strength and yield strength all increases, and the hardness declines. And except H2:N2=70%:30, when holding time is less than or equal to 1.2min, at different ratio of hydrogen and nitrogen, holding time will influence 4J42’s mechanical properties little. So combine requires in industry with the experiment results, it can be concluded that for 4J42 alloy, annealing at atmosphere of hydrogen nitrogen ratio is less than 70%:30% for about 1.2min is appropriate to atmosphere annealing process in industry.

Synthesis of high-temperature thermally expandable microcapsules and their effects on foaming quality and surface quality of foamed ABS materials

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 519-527
Author(s):  
Wei Gong ◽  
Xianglin Pei ◽  
Xiaogang Yin ◽  
Daming Ban ◽  
Hai Fu ◽  
...  
Keyword(s):  
High Temperature ◽  
Surface Quality ◽  
Volume Fraction ◽  
Crosslinking Agent ◽  
Acrylonitrile Butadiene Styrene ◽  
Foaming Agent ◽  
Blowing Agent ◽  
Good Surface ◽  
Butadiene Styrene

AbstractIn this paper, acrylonitrile and hydroxypropyl acrylate are used as the binary polymerization monomers, and isooctane is used as the foaming agent to prepare high-temperature thermally expandable microcapsules. Analysis of the effect of blowing agent and crosslinking agent on the expansion properties of high-temperature thermally expandable microcapsules, the effects of foaming agent azodicarbonamide (ADCA) and micro-expansion capsule on the surface quality and foaming quality of foamed acrylonitrile–butadiene–styrene (ABS) products were investigated. The foamed product prepared by the high-temperature microcapsule has a good surface quality, the gloss is 52.3, the cell is not easily deformed, and the volume fraction is 4%; the foamed ABS/ADCA material has poor cell uniformity, the cell is easily deformed, the volume fraction is 6.5%, the surface quality is poor, and the gloss is only 8.7.

Effect of high-temperature annealing on the valence state of Ce ions and the mechanical properties of (ZrO2)0.972 (Y2O3)0.02 (CeO2)0.008 crystals

2019 ◽  
Vol 238 ◽  
pp. 121930 ◽  
Author(s):  
Filipp Milovich ◽  
Alexey Kulebyakin ◽  
Мikhail Borik ◽  
Rushana Eremina ◽  
Еlena Lomonova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Valence State ◽  
High Temperature Annealing

Study of Residual Stresses Distribution Generated from Milling of Magnesium Alloy Parts

2014 ◽  
Vol 657 ◽  
pp. 18-22 ◽  
Author(s):  
Bogdan Chirita ◽  
Nicolae Catalin Tampu
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Residual Stresses ◽  
Surface Quality ◽  
Specific Weight ◽  
Superficial Layer ◽  
Medical Industry ◽  
Alloy Part

Magnesium alloys exhibit a very good ratio of mechanical properties versus specific weight, thus making it an important choice for parts used in automotive, aeronautic and medical industry. The distribution of residual stress in the superficial layer of the material is regarded as one of the factors defining the surface quality of a machined part. It is therefore important to know this distribution as it is closely related to fatigue and corrosion resistance, especially for the parts working in aggressive environments (i.e. biomedical devices). The present paper focuses on the determination of the residual stresses induced in a magnesium alloy part processed by milling, and their effects on surface quality.

High Temperature Annealing of Simox Layers Physical Mechanisms of Oxygen Segregation

1988 ◽  
Vol 100 ◽  
Author(s):  
C. Jaussaud ◽  
J. Margail ◽  
J. Stoemenos ◽  
M. Bruel
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Concentration Profile ◽  
Point Of View ◽  
High Temperature Annealing ◽  
Physical Mechanisms ◽  
Oxygen Migration ◽  
Buried Layer

ABSTRACTHigh temperature annealing of Simox wafers (T > 1300°C), has been proved to dramaticaly increase the quality of the SOI structure.The heat treatment leads to a redistribution of the implanted oxygen, opposite to its concentration profile, towards the buried layer.This paper describes from a thermodynamical point of view the SiO2 precipitates dissolution. The physical mechanisms of the oxygen migration are also discussed.

A novel porous substrate for the growth of high quality GaN crystals by HVPE

RSC Advances ◽  
2014 ◽  
Vol 4 (66) ◽  
pp. 35106-35111 ◽  
Author(s):  
Yuanbin Dai ◽  
Yongzhong Wu ◽  
Lei Zhang ◽  
Yongliang Shao ◽  
Yuan Tian ◽  
...  
Keyword(s):  
Residual Stress ◽  
High Temperature ◽  
Defect Density ◽  
Annealing Process ◽  
High Temperature Annealing ◽  
Porous Substrate ◽  
High Quality

This manuscript describes a high temperature annealing process to prepare a porous substrate. The substrate was used for the growth of GaN by using HVPE method to provide reduced residual stress and low defect density.

scholarly journals Influence of the high-temperature annealing on the structure and mechanical properties of vacuum–arc coatings from Mo/(Ti + 6 wt % Si)N

2017 ◽  
Vol 39 (3) ◽  
pp. 172-177 ◽  
Author(s):  
V. M. Beresnev ◽  
S. A. Klimenko ◽  
O. V. Sobol’ ◽  
S. V. Litovchenko ◽  
A. D. Pogrebnjak ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Vacuum Arc ◽  
High Temperature Annealing

The mechanical properties of Al2O3Cr3C2 composites after high temperature annealing in air

1994 ◽  
Vol 37 (4) ◽  
pp. 362-369
Author(s):  
Fu Chen-Tsu ◽  
Li Ai-Kang ◽  
Lin Jiang-Tsair ◽  
Wu Jenn-Ming
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
High Temperature Annealing
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