Results 71 to 80 of about 85,615 (303)

Microstructure and Mechanical Properties of High Relative Density γ-TiAl Alloy Using Irregular Pre-Alloyed Powder

Metals, 2021
Preparing high relative density γ-TiAl alloy by pressure-less sintering at low-cost has always been a challenge. Therefore, a new kind of non-spherical pre-alloyed TiAl powder was prepared by the reaction of TiH2 powder and Al powder at 800 °C to ...
Mengjie Yan, Fang Yang, Boxin Lu, Cunguang Chen, Yanli Sui, Zhimeng Guo   +5 more
doaj   +1 more source

Effects of Impurity Content on the Sintering Characteristics of Plasma-Sprayed Zirconia [PDF]

, 2007
Yttria-stabilized zirconia powders, containing different levels of SiO2 and Al2O3, have been plasma sprayed onto metallic substrates. The coatings were detached from their substrates and a dilatometer was used to monitor the dimensional changes they ...
A. Cipitria, A. Kulkarni, A. Kulkarni, A.J. Allen, B. Siebert, B.Z. Janos, D. Stover, D. Stover, D.M. Zhu, D.M. Zhu, E.W. Washburn, H.C. Chen, H.C. Chen, H.E. Eaton, I.O. Golosnoy, I.O. Golosnoy, J. Brakel Van, J. Ilavsky, J. Ilavsky, J. Ilavsky, J.A. Thompson, K. Matsui, L. Singheiser, L. Xie, M. Gustavsson, M. Tamura, M.F. Ashby, M.N. Rahaman, M.R. Dorfman, P. Strunz, R. Hamacha, R. Vassen, R.A. Miller, S. A. Tsipas, S. Paul, S. Sodeoka, S. Stemmer, S.A. Tsipas, S.M. Lakiza, S.R. Choi, T.A. Dobbins, T.W. Clyne, V. Teixeira   +42 more
core   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Densification Behaviors of Zirconium Carbide with Silicon Additive Produced by Spark Plasma Sintering

Nuclear Materials and Energy
Zirconium Carbide (ZrC) is a promising matrix material candidate for Fully Ceramic Microencapsulated (FCM) fuel. Using Spark Plasma Sintering (SPS) and introducing a certain amount of Si as sintering additive can effectively promote the sintering ...
Qisen Ren, Lixiang Wu, Yang Liu, Jun Yan, Yehong Liao, Weiming Guo, Weiqiang Liu   +6 more
doaj   +1 more source

Powder Deposition and Sintering for a Two-Powder Approach to Solid Freeform Fabrication [PDF]

, 1998
A two-powder approach is presented where Fused Deposition modeling (FDM) is used to create a thin shell in the shape of the part to be fabricated. The shell is filled with powder of the part material and surrounded by a support powder that has a high ...
Kumar, Ashok V.
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Preparation and properties of Mo2C-TiN0.3 composite materials at high temperature and high pressure

Jin'gangshi yu moliao moju gongcheng
Objectives: This study aims to prepare sintered bodies of Mo2C and TiN0.3 and explore their phase compositions, microstructures, and mechanical properties. Using a combined approach of mechanical alloying and high-temperature high-pressure sintering, the
Qin ZOU, Kuan WANG, Yanguo LI, Weiji DAI, Yongan LUO   +4 more
doaj   +1 more source

Fabrication of binder-free ultrafine WC-6CO composites by coupled multi-physical fields activation technology [PDF]

, 2013
A novel sintering method, named as coupled multi-physical fields activation technology, has been introduced for the forming of various material powder systems.
Huang, Kunlan, Qin, Yi, Yang, Gang, Yang, Yi, Yin, Deqiang   +4 more
core   +1 more source

Improvement of mechanical properties of zirconia-toughened alumina by sinter forging [PDF]

, 1994
ZTA powder with a composition of 85 wt% alumina/15 wt% zirconia was prepared by a gel precipitation method. Sinter forging was performed with this powder to enhance the mechanical properties of ZTA materials.
Burggraaf, A.J., He, Y.J., Verweij, H., Winnubst, A.J.A.   +3 more
core   +3 more sources

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source