Results 21 to 30 of about 1,463 (216)

Optimization of the Metallurgical Process of (Ni_xSi+C)/Cu Composite Materials Based on Orthogonal Test [PDF]

Cailiao Baohu, 2023
In order to optimize the parameters of the powder metallurgy process of (NixSi+C)/Cu composite materials，orthogonal tests were designed to study the effects of mixing method，sintering temperature and sintering time on the microstructure and mechanical ...
QIN Lan, JIA Lei, YANG Ming-fang, WANG Wen-jie, JIANG Li-ping
doaj   +1 more source

FABRICATION OF POROUS POWDER MATERIALS WITH CONTROLLED DIRECTION FILTERING

Литьë и металлургия, 2015
The technology for obtaining of porous powder materials with frame structure on the basis of spherical particles of titanium powder, using application of technological coatings of Тi (Si+Мо), (Si+С) or (W+С) was developed.
V. Kovalevskij, Yu. Alekseev, L. Kerzhenceva, A. Zhuk, A. Kovalevskaja, V. Zhuk   +5 more
doaj   +1 more source

Preparation of boron carbide stainless steel composites by spark plasma sintering

Fenmo yejin jishu
The B4C-stainless steel composites with B4C mass fraction of 4.00% were prepared by spark plasma sintering (SPS) method, using B4C microspheres and 304 stainless steel powders as the raw materials. The density of the composites was tested by the drainage
LI Yuanyuan, WU Ying, PAN Xiaoqiang, LIU Tingwei   +3 more
doaj   +1 more source

Creep of Reaction Sintered and Liquid Phase Sintered Sialon

Journal of the Mechanical Behavior of Materials, 1990
Creep experiments were conducted with 100—250 MPa stress at 1200-1450°C of Reaction Sintered (RS) Sialon A synthesized from Si3N4-AlN-Al203 and Liquid Phase Sintered (LPS) Sialon C, CI synthesized from Y203-A1N-Si02 systems. RS Sialon A, containing no liquid phase sintering aid, had better creep resistance than LPS Sialon C, CI.
Chakraborty, D., Mukhopadhyay, A.K.
openaire   +2 more sources

Review article: RE-SiAlONa¤b- composites. Formation, thermal stability, phase relationships, reaction densification

Cerâmica, 1999
In view of the considerable progress that has been made over the last several years on the fundamental understanding of phase relationships, microstructural design, and tailoring of properties for specific applications of rare-earth doped SiAlONs, a ...
V. A. Izhevskiy, L. A. Gênova, J. C. Bressiani   +2 more
doaj   +1 more source

Sintering effect on electrical properties and morphology of lead-free Na0.92k0.08NbO3 ceramics [PDF]

Science of Sintering, 2019
Sodium potassium niobate (NKN) powders were synthesized by the solid-state reaction method. The NKN ceramics for composition Na0.92K0.08NbO3 (NKN) were then fabricated by a two-step sintering technique.
Kathait Gambheer Singh, Panwar N.S., Thapliyal Prashant, Biswas Don, Rohilla Vishal, Singh Surendra   +5 more
doaj   +1 more source

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

Advanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold, Dylan Jennings, Robert Vaßen   +2 more
wiley   +1 more source

Reaction sintering of silicon oxynitride.

Journal of the Japan Society of Powder and Powder Metallurgy, 1989
Silicon oxynitride (Si2N2O) ceramics were fabricated from equi-molar mixtures of Si3N4 and SiO2 with 5 wt % Al2O3 as a sintering aid by heating at 1650-1950°C for 1 h in 980 KPa N2. The initial stage of densification was due to the solution and repreci-pitation of Si3N4 through a liquid phase of SiO2-Al2O3 system.
Mitomo, Mamoru, Ono, Syunsuke
openaire   +2 more sources

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Effect of carbon fiber content on compositional structure and properties of reaction-sintered B4C composites

Cailiao gongcheng
In this study，B4C-C green containing carbon fibers are prepared by hot pressure molding process used carbon fiber，boron carbide powder，and graphite powder as raw materials，phenolic resin as molding agent，wherein，carbon fiber and powder are dispersed ...
HE Wei, HE Xiaodong, GU Yanju, HU Xiaoyan, ZHANG Yudi   +4 more
doaj   +1 more source