A5005929195- Advanced ceramic materials synthesis
- Additive Manufacturing and 3D Printing Technologies
- Recycling and utilization of industrial and municipal waste in materials production
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Innovations in Concrete and Construction Materials
- Bone Tissue Engineering Materials
- Photopolymerization techniques and applications
- Aluminum Alloys Composites Properties
- Advanced machining processes and optimization
- Concrete and Cement Materials Research
- Surface Treatment and Residual Stress
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- High-Temperature Coating Behaviors
- Injection Molding Process and Properties
- Metallic Glasses and Amorphous Alloys
- MXene and MAX Phase Materials
Beijing Institute of Aeronautical Materials
2018-2024
Abstract Ceramic cores doped with gadolinium oxide can perform neutron photographic examination of inner cavity residual hollow turbine blades containing complicated frameworks. This paper systematically investigates the performance silicon-based ceramic after adding Gd 2 O 3 . The experimental results indicate that increasing content cannot significantly affect cores’ room-temperature flexural strength and shrinkage. In contrast, it considerably influences high-temperature deflection. When...
Abstract Single crystal high-temperature alloy hollow blades are crucial components in aircraft engines, utilizing ceramic cores for their internal structure. Turbine blade designs have evolved from simple solid structures to complex and multi-layered wall structures. The fabrication of necessitates the use water-soluble cores. In this study, addition graphite powder enhances bending strength toughness while reducing linear shrinkage dissolution rates. Moreover, increasing particle size...
Abstract Y was added to DD5 superalloy, and the interface reaction between superalloy ceramic core at various positions on cast turbine blade studied using scanning electron microscopy, energy spectrum analysis, other methods. The study aimed investigate influence of this reaction. Results show that superalloys containing yttrium exhibit strong interfacial reactions with silicon-based cores, resulting in uniform products pits across entire surface blades. At local core-superalloy interface,...
Silica-based ceramic cores play key roles in the casting of aeroengine blades, but they are highly limited by poor high-temperature mechanical property. Here, fused mullite (FM) and sintered (SM) powders were modified silica-based cores, microstructure evolution crystallization kinetics depending on types studied. The with FM showed a dense superior properties compared to those SM. 10 wt.% activation energy 1119.5 kJ/mol exponent 1.74, values 938.4 1.86 as SM employed; decreased elevated...
In this work, cristobalite seeds were doped in silica-based ceramic cores, and the effect of particle size on properties cores was investigated. With decreasing seeds, content crystallised sintered increased gradually due to elevated surface area; linear shrinkage, bulk density leachability exhibited drastic increase after gradual decrease, flexural strength displayed an opposite tendency. When mean is 5 μm, showed optimal comprehensive properties, including shrinkage 0.35%, apparent...
The IC10 directionally solidified superalloy is a nickel-based alloy with high temperature resistance, and its surface integrity has significant impact on the fatigue life of critical hot-end components in aerospace engines. This paper investigates influence creep-feed grinding (surface roughness hardness) high-temperature superalloy. High-temperature tests were conducted superalloy, method for evaluating using proposed. results indicate that as Ra increases from 0.60 μm to 2.15 μm, maximum...
Ceramic cores provide complex internal cavity structures in the investment precision castings of hollow blades for aero-engine. The silica/mullite ceramic were fabricated by hot injection molding, adding fused mullite powders with different particle sizes as mineralizers. size mineralizers on crystallization and properties was investigated paper. result shows that promote cristobalite cores, finer can further improve heterogeneous nucleation, generate larger quantities cristobalite. Mullite...