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Online since: July 2011
Authors: Li Wang, De Qin Meng, Chun Yan Zhuang
Besides, calcium sulfate whisker also gets excellent mechanical properties and good compatibilities, which makes it have wide application in plastic, rubber, flame retardant materials, antistatic materials, flame retardant paper and construction materials, etc [2,3].
There are three factors which would affect the experimental results such as the dosage of crystal growth auxiliaries (mole ratio of Mg/Ca), reaction temperature, concentration of sulfuric acid and the precipitating time.
Took three levels for each factor, and the orthogonal table L9 (34) was chosen to carry out the orthogonal experiments, the related factors and levels were given in Table 2.
It is supposed that the mole ratio of Mg/Ca can affect the results obviously.
Experimental results show that the mole ratio of Mg/Ca is the key factor that affect calcium recovery and length-diameter ratio of whisker.
There are three factors which would affect the experimental results such as the dosage of crystal growth auxiliaries (mole ratio of Mg/Ca), reaction temperature, concentration of sulfuric acid and the precipitating time.
Took three levels for each factor, and the orthogonal table L9 (34) was chosen to carry out the orthogonal experiments, the related factors and levels were given in Table 2.
It is supposed that the mole ratio of Mg/Ca can affect the results obviously.
Experimental results show that the mole ratio of Mg/Ca is the key factor that affect calcium recovery and length-diameter ratio of whisker.
Online since: April 2020
Authors: Mohammed Kasim Mohsun
Introduction
Ti-6Al-4V has been used in many industrial fields such as the aerospace industry, medical applications, power station, and chemical plants due to its properties such as low density, high strength, excellent corrosion resistance, and workability [1,2,3].
Accordingly, an urgent industrial need has been emerged for the development of its mechanical properties by applying THT, which creates an optimal microstructure using hydrogen as a temporary alloying element within the heat treatment [4,5,6].
The behavior of hydrogen diffusion depends on many primary and secondary factors.
The primary factors include the type of grain boundaries of a crystal lattice, vacancy concentration, internal stresses, and microstructure type, while the secondary factors include the alloying elements quantity, impurities quantity, and the presence of metastable phases in the alloy [15,16,17].
The difference in the hydrogen concentrations evidence that the structure form has an influence on hydrogen uptake in addition to other influential factors such as the temperature and pressure.
Accordingly, an urgent industrial need has been emerged for the development of its mechanical properties by applying THT, which creates an optimal microstructure using hydrogen as a temporary alloying element within the heat treatment [4,5,6].
The behavior of hydrogen diffusion depends on many primary and secondary factors.
The primary factors include the type of grain boundaries of a crystal lattice, vacancy concentration, internal stresses, and microstructure type, while the secondary factors include the alloying elements quantity, impurities quantity, and the presence of metastable phases in the alloy [15,16,17].
The difference in the hydrogen concentrations evidence that the structure form has an influence on hydrogen uptake in addition to other influential factors such as the temperature and pressure.
Online since: September 2013
Authors: Jing Pei Xie, Ai Qin Wang, Li Jun Zhang, Xing Hai Shao
Study on Erosion Wear Property of Nickel-Chromium Cast Iron
Xie Jingpei, Zhang Lijun, Wang Aiqin and Shao Xinghai
College of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China
exceley@163.com
Keywords: erosion wear, Nickel-Chromium cast iron, impact angle, acidity
Abstract.
The erosion wear property was greatly affected by the strong acid, but it can be ignored when pH≥3.
Results and the analysis Mechanical properties and metallurgical structure The microstructure of materials after heat treatment and the result of phase calibration are given by Figure 1.
The impact angle was 30°.It can be seen that the acidity of wear medium is one of the most important factors to the abrasion resistance of low chromium and nickel contained cast iron.
Effect of erodent properties on erosion wear of ductile type materials[J].
The erosion wear property was greatly affected by the strong acid, but it can be ignored when pH≥3.
Results and the analysis Mechanical properties and metallurgical structure The microstructure of materials after heat treatment and the result of phase calibration are given by Figure 1.
The impact angle was 30°.It can be seen that the acidity of wear medium is one of the most important factors to the abrasion resistance of low chromium and nickel contained cast iron.
Effect of erodent properties on erosion wear of ductile type materials[J].
Online since: December 2016
Authors: Tatsuya Kawada, K. Terada, Mayu Muramatsu
Although the mechanical behavior of ferroelasticity is considered to affect the mechanical behavior of the SOFC, it has been scarcely understood.
The macroscopic mechanical properties are discussed with formation of microstructure.
The material properties and analysis conditions are: and .
Kawada, In Situ Measurements of Mechanical Properties of Materials for Solid Oxide Fuel Cells, Netsu Sokutei. 40 (2013) 23-29
[6] Kimura, Y. et al.: Ferroelastic Domain Reorientations and Its Influence on Mechanical Properties of La 0.6Sr0.4Co0.2Fe0.8O3-d, J.
The macroscopic mechanical properties are discussed with formation of microstructure.
The material properties and analysis conditions are: and .
Kawada, In Situ Measurements of Mechanical Properties of Materials for Solid Oxide Fuel Cells, Netsu Sokutei. 40 (2013) 23-29
[6] Kimura, Y. et al.: Ferroelastic Domain Reorientations and Its Influence on Mechanical Properties of La 0.6Sr0.4Co0.2Fe0.8O3-d, J.
Online since: June 2012
Authors: Tai Jiang Li, Wei Li, Fu Guang Liu, Li Ying Liu, Bo Wang, Yong Li
Microstructures and mechanical properties of the weld and the protective coatings were tested.
The two factors are benefit to the precipitation of austenite phase.
Mechanical Properties of Weld Joints.
Mechanical Properties of HVOF Coatings.
The mechanical properties of the weld joints were in accordance with related standard.
The two factors are benefit to the precipitation of austenite phase.
Mechanical Properties of Weld Joints.
Mechanical Properties of HVOF Coatings.
The mechanical properties of the weld joints were in accordance with related standard.
Online since: March 2004
Authors: X.Q. Yang, Ai Bing Yu, Y.H. Wang, Yan Shen Xu, Yan Fei Tan
Compared with metals and plastics, engineering ceramics have the properties of
high hardness and high strength, and they have much superiority to be used as tribological parts.
The mechanical processing may result in some defects and damages on the ground surface of ceramics, and may affect some properties such as mechanical properties and optical properties etc. [1-2].
The mechanical properties of ZTM are listed in Table 1.
Table 1 Mechanical properties of ZTM ceramics Hardness HV [GPa] Fracture toughness KIC [MPa.m1/2] Mass density � [g/cm3] Flexural strength � f [MPa] 8.2 4.5 3.51 329 Journal Title and Volume Number (to be inserted by the publisher) 367 The counterparts in wear tests were GCr15 steel balls.
But the lateral cracks, which may easily propagate and result in the spalling of materials in friction process, are the main factor to affect tribological performance for ceramics.
The mechanical processing may result in some defects and damages on the ground surface of ceramics, and may affect some properties such as mechanical properties and optical properties etc. [1-2].
The mechanical properties of ZTM are listed in Table 1.
Table 1 Mechanical properties of ZTM ceramics Hardness HV [GPa] Fracture toughness KIC [MPa.m1/2] Mass density � [g/cm3] Flexural strength � f [MPa] 8.2 4.5 3.51 329 Journal Title and Volume Number (to be inserted by the publisher) 367 The counterparts in wear tests were GCr15 steel balls.
But the lateral cracks, which may easily propagate and result in the spalling of materials in friction process, are the main factor to affect tribological performance for ceramics.
Online since: November 2013
Authors: Raj Das, Nathaniel James Burbery
There are many unique properties and mechanical characteristics which can only be observed in polymeric nanofibrils [1].
Other properties include sufficient mechanical durability to enable prolonged functionality, high strength, and a high degree of nanoporosity [2].
These materials are well-suited to aerospace, automotive and marine applications, which require a balance of good mechanical properties and lightweight [1].
Useful properties include high mechanical performance, UV protection, anti-microbial properties, electrical conductivity and thermo-regulation (by trapping heat to maintain thermal equilibrium) [21].
Summary By understanding the trends occurring in the field of electrospinning, it is possible to fully exploit the versatility, exceptional mechanical properties and unique functional properties of polymer nanofibrillar materials.
Other properties include sufficient mechanical durability to enable prolonged functionality, high strength, and a high degree of nanoporosity [2].
These materials are well-suited to aerospace, automotive and marine applications, which require a balance of good mechanical properties and lightweight [1].
Useful properties include high mechanical performance, UV protection, anti-microbial properties, electrical conductivity and thermo-regulation (by trapping heat to maintain thermal equilibrium) [21].
Summary By understanding the trends occurring in the field of electrospinning, it is possible to fully exploit the versatility, exceptional mechanical properties and unique functional properties of polymer nanofibrillar materials.
Online since: June 2025
Authors: Mobark Haider Faisal Helal, Masar Alsigar, Mahmood Alhafadhi, Saleh Suliman Saleh Elfallah, Mohammed Ahmed Shehab, S. Santhosh Kumar, Alden Abd Alal Sahm
The distribution and magnitude of these stresses are influenced by several factors, including welding parameters (e.g., heat input, welding speed, and electrode diameter), material properties, and initial conditions such as pre-existing stresses or prior thermal histories.
Additionally, pre-existing thermal and mechanical conditions can alter residual stress profiles, and failing to account for these factors may lead to inaccurate predictions and suboptimal welding practices.
The distribution and magnitude of these stresses are influenced by the physical and mechanical properties of both the weld and base metals.
Table 1. shows the Mechanical properties of base pipe and weld metal.
S., “Study the influence of welding parameters by taguchi’s design on the mechanical properties of welded mild steel (S235jr)”, Jurnal teknologi, vol. 85, no.4, pp.55-66, 2023
Additionally, pre-existing thermal and mechanical conditions can alter residual stress profiles, and failing to account for these factors may lead to inaccurate predictions and suboptimal welding practices.
The distribution and magnitude of these stresses are influenced by the physical and mechanical properties of both the weld and base metals.
Table 1. shows the Mechanical properties of base pipe and weld metal.
S., “Study the influence of welding parameters by taguchi’s design on the mechanical properties of welded mild steel (S235jr)”, Jurnal teknologi, vol. 85, no.4, pp.55-66, 2023
Online since: November 2012
Authors: Xiao Peng Miao, Wei Zhang, Hai Bo Wang
The working mechanism of hydraulic excavators is the main load-bearing component, it’s structure strength directly affects the reliability and performance of the excavator.
Details which didn’t affect the structure strength, such as small round holes and little chamfers, etc., were simplified in the process of modeling.
Mechanical Properties of Material The materials of the working mechanism of the hydraulic excavator were mainly Q345B,its mechanical properties of material is shown in Table 1.
When calculating the strength of the working mechanism, safety factor S is generally selected as 1.5-2.
Table 1 Q345B material properties performance material density [kg/mm^3] elastic modulus [MPa] Poisson ratio yield strength [MPa] intensity limit [MPa] Q345B 7.85e-6 2.06e5 0.3 345 510-600 Working Load and Boundary Conditions Under four typical working conditions, external force situation of the working mechanism can be obtained by calculating.
Details which didn’t affect the structure strength, such as small round holes and little chamfers, etc., were simplified in the process of modeling.
Mechanical Properties of Material The materials of the working mechanism of the hydraulic excavator were mainly Q345B,its mechanical properties of material is shown in Table 1.
When calculating the strength of the working mechanism, safety factor S is generally selected as 1.5-2.
Table 1 Q345B material properties performance material density [kg/mm^3] elastic modulus [MPa] Poisson ratio yield strength [MPa] intensity limit [MPa] Q345B 7.85e-6 2.06e5 0.3 345 510-600 Working Load and Boundary Conditions Under four typical working conditions, external force situation of the working mechanism can be obtained by calculating.
Online since: December 2016
Authors: Sigitas Vėjelis, Saulius Vaitkus, Agnė Kairytė
Results and discussion
Density and mechanical properties
The effect of different TCAs can be observed from Fig. 2.
Mechanical properties of PU/PWS foam composites coupled with TCAs: a) compressive strength; b) tensile strength Mechanical properties of the prepared foams with different types and amounts of TCAs are presented in Fig. 3.
Neon, Effects of titanate coupling agent on rheological behaviour, dispersion characteristics and mechanical properties of talc filled polypropylene, Eur.
Khalil, Effect of a silane coupling agent on the properties of white rice husk ash-polypropylene/natural rubber composites, Polym.
Ishak, Effect of titanate coupling agent on the mechanical, thermal and morphological properties of poly(methyl methacrylate)/hydroxyapatite denture base composites, J.
Mechanical properties of PU/PWS foam composites coupled with TCAs: a) compressive strength; b) tensile strength Mechanical properties of the prepared foams with different types and amounts of TCAs are presented in Fig. 3.
Neon, Effects of titanate coupling agent on rheological behaviour, dispersion characteristics and mechanical properties of talc filled polypropylene, Eur.
Khalil, Effect of a silane coupling agent on the properties of white rice husk ash-polypropylene/natural rubber composites, Polym.
Ishak, Effect of titanate coupling agent on the mechanical, thermal and morphological properties of poly(methyl methacrylate)/hydroxyapatite denture base composites, J.