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Hejun Li

Northwestern Polytechnic University (NPU)

127# YouYi Load

DEPARTMENT OF INDUSTRIAL ENGINEERING

Xi'an, 710072

China

SCHOLARLY PAPERS

20

DOWNLOADS

589

TOTAL CITATIONS

3

Scholarly Papers (20)

1.

Yb2si2o7 Environment Barrier Coating Modified by Al2o3 for Long-Term Durability Against Water-Vapor Corrosion at 1500 °C

Number of pages: 32 Posted: 17 Apr 2024
Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 61 (951,658)

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Environmental barrier coating, Ytterbium disilicate, Water-vapor corrosion, C/C composites

2.

Evaluation of Ablation Resistant Zrc-Sic Multilayer Coating for Sic Coated Carbon/Carbon Composite Under Oxyacetylene and Laser Conditions

Number of pages: 37 Posted: 21 Mar 2022
Feng Guanghui, Hejun Li and Xiyuan Yao
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 58 (980,173)

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carbon/carbon composites, plasma spraying, multilayer coating, laser irradiation, oxyacetylene ablation

Spatiotemporal Evolution of the Heterogeneous Oxide Layer and Ablation Performance of C/C-HfC Composites: A Combined Experimental and Numerical Study

Number of pages: 26 Posted: 04 Dec 2025
affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 23 (1,459,262)

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HfC coating, C/C composites, Ablation, Composition evolution, Oxygen barrier properties.

4.

Sustainable, Rapid, and Low-Cost Recycling of Waste C/C Composites for the Fabrication of C/C-SiC Friction Materials

Number of pages: 28 Posted: 06 Jan 2026
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 46 (1,109,210)

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Waste C/C composites, High-value recycling, Molding-in-situ reaction method, C/C-SiC friction materials

5.

Multifunctional SiCf/Si3N4-SiC-Si3N4 composites with integrated high-temperature tolerance, mechanical strength and microwave absorption

Number of pages: 31 Posted: 04 Dec 2025
Northwestern Polytechnic University (NPU), Northwestern Polytechnical University, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 36 (1,236,159)

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Multifunctional composites, Sandwich structure, Microwave absorption, High strength, high-temperature tolerance

6.

Construction of Polydopamine Functionalized Porous Carbon Network Structure in Polymer Composites for Excellent Mechanical and Electromagnetic Interference Shielding Properties

Number of pages: 30 Posted: 05 Oct 2023
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, Northwestern Polytechnical University, affiliation not provided to SSRN and Northwestern Polytechnic University (NPU)
Downloads 36 (1,236,159)

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carbon fiber, Polymer composite, Porous carbon, electromagnetic interference shielding, Mechanical properties

7.

Microstructure and Phase Evolution of Yb2sio5/Mosi2-Mullite Environmental Barrier Coatings at 1500 °C

Number of pages: 29 Posted: 23 May 2023
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 36 (1,236,159)

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Microstructure and phase evolution, Yb2SiO5, MoSi2, Water-vapor corrosion, Nb alloy

8.

Multi-Stimulus Responsive Actuator with Weldable and Robust Mxene-Cnts Hybrid Films

Number of pages: 23 Posted: 14 May 2024
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and affiliation not provided to SSRN
Downloads 34 (1,277,121)

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Stimulus-responsive actuator, MXene, Composite modification, Energy conversion, Splicing

9.

Study on Ablation Behavior and Mechanism of Cf/Hfcpip-Siccvi Composites: From Sio2 Nanowires Film to Hfo2 Skeleton Structure

Number of pages: 24 Posted: 02 Sep 2022
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 32 (1,290,922)

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ablation behaviors, ablation mechanisms, SiO2 nanowires, melting behavior, HfO2 skeleton

10.

Needle-punched preform orientation governs cyclic ablation resistance of C/C–HfC–SiC composite leading edges

Number of pages: 37 Posted: 27 Nov 2025
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Henan Academy of Sciences, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 30 (1,318,317)

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Needle-punched C/C composites, Sharp leading edges, HfC-SiC, Orientation matching, Ablation resistance

11.

Ablation Resistance of Zro2-Encapsulated Zrb2 Coating with 3d Thermal Conduction Network Applied Over Carbon/Carbon Composites

Number of pages: 40 Posted: 15 Jul 2023
affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 26 (1,372,601)

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C/C composites, Ablation resistance, Thermal conduction network, ZrO2-ZrB2, sol-gel

12.

Simultaneous formation of Si3N4nf membrane and Si3N4nf-CNTs membrane: Efficient utilization of polymer precursor

Number of pages: 12 Posted: 26 Nov 2025
affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Xihang University
Downloads 25 (1,385,945)

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Silicon Nitride Nanofiber, Carbon nanotubes, Effective Utilization, Precursor, Waste Gasses

13.

Construction of Polydopamine Functionalized Porous Carbon Interface Network Structure in Polymer Composites for Excellent Mechanical and Electromagnetic Interference Shielding Properties

Number of pages: 33 Posted: 14 Jul 2023
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, Northwestern Polytechnical University, affiliation not provided to SSRN and Northwestern Polytechnic University (NPU)
Downloads 24 (1,399,036)
Citation 1

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Carbon fiber, Polymer composite, Porous carbon, Electromagnetic interference shielding, Mechanical properties

14.

Electromagnetic Absorption Properties of Sibcnoxzr Ceramics with High-Temperature Oxidation Resistance

Number of pages: 41 Posted: 17 May 2023
Qian Wang, Lehua Qi, Yujun Jia and Hejun Li
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 22 (1,424,331)

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Electromagnetic absorption, Polymer-derived ceramics, sp2 carbon, Si-doped t-ZrOx, SiBCNOxZr

15.

Trans-Scale Interface Engineering: Constructing Nature-Inspiredspider-Web Networks for Regulating Thermal Transport and Mechanical Performance of Carbon Fiber/Phenolic Composites

Number of pages: 33 Posted: 19 Apr 2023
affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN and Northwestern Polytechnic University (NPU)
Downloads 22 (1,424,331)

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Interface engineering, Mechanical properties, 3D thermal conductive network, Carbon fiber/phenolic composites

16.

Sandwich-structured Si3N4@SiO2 nanofiber aerogel: Exceptional thermal insulation and mechanical performances for advanced applications

Number of pages: 16 Posted: 12 Dec 2025
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Xihang University
Downloads 18 (1,470,786)

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Silicon Nitride Nanofiber, Mechanical Property, thermal insulation, Ceramic Nanofiber Aerogel

17.

Mo-Ni Foam Interlayer Deposited Pyrolytic Carbon for Brazing C/C and Nickel-Based Superalloy

Number of pages: 37 Posted: 19 Sep 2024
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Northwestern Polytechnic University (NPU), Xidian University and Northwestern Polytechnic University (NPU)
Downloads 18 (1,470,786)
Citation 2

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brazing, C/C composites, Mo-Ni foam, Pyrolytic carbon

18.

Surface Decoration of Flexible Si3n4 Nanowire Membrane by Hydroxyapatite Micron-Flake with Excellent Thermal Insulation at 1300 °C

Number of pages: 19 Posted: 06 Feb 2024
Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU), Northwestern Polytechnic University (NPU) and Northwestern Polytechnic University (NPU)
Downloads 17 (1,481,165)

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Silicon Nitride Nanowire, Low Thermal Conductivity, Fire-Resistance, Interfacial Thermal Resistance

19.

Effect of heat-treatment on the microstructure and mechanical properties of carbon nanotubes reinforced pyrolytic carbon nanocomposites from 1500°C to 2450°C

Number of pages: 28 Posted: 05 Sep 2025
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Northwestern Polytechnic University (NPU)
Downloads 13 (1,518,554)

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Carbon nanotube, Pyrolytic carbon, Nanocomposites, Microstructure, Mechanical properties, Heat-treatment

20.

Evolution of Microstructure and Mechanical Properties of Carbon Nanotubes Reinforced Pyrolytic Carbon Nanocomposites from 1500°C to 2450°C

Number of pages: 28 Posted: 22 Jul 2025
affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN and Northwestern Polytechnic University (NPU)
Downloads 12 (1,526,714)

Abstract:

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Carbon nanotube, Pyrolytic carbon, nanocomposites, Microstructure, Mechanical properties