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Crystals, Volume 13, Issue 4

April 2023 - 163 articles

Cover Story: Ni-based single-crystal (SX) superalloys with low specific weight are vital for developing aero engines with a high strength-to-weight ratio. A team in Zhejiang University have designed compositions of a series of new Ni-based superalloys with 3 wt.% Re but without W, whose specific weights are all lower than 8.4 g/cm3. SXs are successfully grown, and a typical γ/γ′ two-phase microstructure has been obtained after solid solution and aging treatments. The new SX alloys have comparable strength to commercial 2nd generation superalloys. Moreover, the topological close-packed phase does not appear at 1050 °C for up to 500 h, indicating excellent phase stability. The current work might provide scientific insights for developing Ni-based SX superalloys with low specific weight. View this paper
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Articles (163)

  • Article
  • Open Access
8 Citations
4,104 Views
15 Pages

Optimizing Struvite Crystallization at High Stirring Rates

  • Atef Korchef,
  • Salwa Abouda and
  • Imen Souid

21 April 2023

Phosphorus and ammonium can both be recovered in the presence of magnesium through struvite (MgNH4PO4·6H2O) crystallization. The present work aimed to optimize struvite crystallization at turbulent solution flow. Struvite was crystallized by m...

  • Article
  • Open Access
3 Citations
6,921 Views
14 Pages

Crystal Structure of a Chimeric Antigen Receptor (CAR) scFv Domain Rearrangement Forming a VL-VL Dimer

  • Jonah Cheung,
  • Shagun Wazir,
  • David R. Bell,
  • James N. Kochenderfer,
  • Wayne A. Hendrickson and
  • Philippe Youkharibache

21 April 2023

Chimeric Antigen Receptor T-cell (CAR-T) immunotherapies are dependent upon designed transmembrane proteins to bind target antigens and stimulate an immune response. The success or failure of these CARs is only partially predictable, yet recent work...

  • Article
  • Open Access
6 Citations
4,141 Views
10 Pages

High Current Density Trench CAVET on Bulk GaN Substrates with Low-Temperature GaN Suppressing Mg Diffusion

  • Xinyi Wen,
  • Kwang Jae Lee,
  • Yusuke Nakazato,
  • Jaeyi Chun and
  • Srabanti Chowdhury

21 April 2023

We report that, for the first time, a low-temperature GaN (LT-GaN) layer prepared by metal–organic chemical vapor deposition (MOCVD) regrowth was used as a Mg stopping layer (MSL) for a GaN trench current–aperture vertical electron transi...

  • Article
  • Open Access
3 Citations
2,396 Views
11 Pages

21 April 2023

High-entropy materials have been widely researched in recent years, and more work on their thermal and electrical properties is still needed. Herein, we fabricate a high-entropy carbide (Ti0.2Zr0.2Nb0.2Hf0.2Ta0.2)C ceramic and report the thermal and...

  • Article
  • Open Access
2,238 Views
13 Pages

21 April 2023

The cooling performance of nanoparticle (NP)-doped radiative cooling materials depends on the dispersion of the NPs in the polymer matrix. However, it is a technical challenge to suppress agglomeration of NPs due to their high surface energy, resulti...

  • Article
  • Open Access
3 Citations
2,064 Views
13 Pages

Microstructures and Mechanical Properties of Annealed Ti50Ni47Fe3 Shape Memory Alloy

  • Shuwei Liu,
  • Yanfeng Li,
  • Xiaoyun Song,
  • Yang Yu,
  • Wenjun Ye and
  • Songxiao Hui

21 April 2023

The effect of annealing temperature on the microstructures and mechanical properties of Ti50Ni47Fe3 (at. %) shape memory alloy was investigated by using a cold-rolled alloy sheet. For this purpose, a scanning electron microscope, electron backscatter...

  • Article
  • Open Access
2,121 Views
12 Pages

Microwave-Assisted Synthesis of Room Temperature Long Persistent Luminescent Materials and Their Imaging Applications

  • Yong Shen,
  • Yunfei Xia,
  • Ping Li,
  • Shuo Zhang,
  • Linlin Li,
  • Die Hu,
  • Dongfang Shi and
  • Kai Song

20 April 2023

In this study, we utilized a simple and efficient microwave heating method with polyethyleneimine (PEI) and phosphate as raw materials to synthesize room temperature persistent luminescence (RTPL) materials that emit phosphorescent light for up to 10...

  • Communication
  • Open Access
3 Citations
2,993 Views
10 Pages

Crystal Structures of 3,3′,5,5′-Tetrabromo-4,4′-bipyridine and Co(II) Coordination Polymer Based Thereon

  • Ilyas F. Sakhapov,
  • Almaz A. Zagidullin,
  • Alexey B. Dobrynin,
  • Igor A. Litvinov,
  • Dmitry G. Yakhvarov,
  • Mikhail A. Bondarenko,
  • Alexander S. Novikov,
  • Vladimir P. Fedin and
  • Sergey A. Adonin

20 April 2023

The crystal structure of 3,3′,5,5′-tetrabromo-4,4′-bipyridine (BrBipy, 1) was determined, and the features of non-covalent interactions in solid state were investigated by theoretical methods. Using BrBipy as a linker ligand, 1D coo...

  • Article
  • Open Access
1 Citations
2,575 Views
16 Pages

Effect of Phosphorous Content on the Microstructure and Stress Rupture Properties of 15Cr–15Ni Titanium-Modified Austenitic Stainless Steel

  • Yufei Qiao,
  • Tian Liang,
  • Sihan Chen,
  • Yuanyuan Ren,
  • Chunming Liu,
  • Yue Qi,
  • Yingche Ma and
  • Kui Liu

20 April 2023

The microstructure of solution-annealed and aged tensile properties and the stress rupture properties of 15Cr–15Ni titanium-modified austenitic stainless steel with different phosphorus contents were investigated using OM, SEM and TEM. The resu...

  • Article
  • Open Access
3 Citations
2,261 Views
14 Pages

Features of the Spectroscopic Characteristics of Yttrium–Aluminum Garnets Doped with Europium at Different Concentrations

  • Nurgul Zhanturina,
  • Daulet Sergeyev,
  • Zukhra Aimaganbetova,
  • Abzal Zhubaev and
  • Karlygash Bizhanova

20 April 2023

The article presents the results of measuring the luminescence spectra and luminescence excitation spectra for YAG:Eu with europium concentrations of 2, 6, 8, and 10%. The materials were synthesized by solid-phase synthesis. For samples with europium...

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Crystals - ISSN 2073-4352