A5003342513- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- GaN-based semiconductor devices and materials
- Additive Manufacturing and 3D Printing Technologies
- Cerebrospinal fluid and hydrocephalus
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- High-Temperature Coating Behaviors
- Neurosurgical Procedures and Complications
- Spinal Dysraphism and Malformations
Hanoi University of Science and Technology
2019-2023
Vietnam Military Medical University
2023
Materials Science & Engineering
2019
Các mẫu hợp kim Ti64 thử nghiệm kéo được in 3D bằng công nghệ nung chảy laze chọn lọc SLM (Selective Laser Melting) với các thông số chính của quy trình gồm đường kính điểm laser (180 µm), khoảng cách giữa (140 tốc độ quét (1600 mm/giây), suất (380 W), dày lớp (45 mm) và góc 2 liên tiếp (45o). Cấu trúc vi mô có ảnh hưởng lớn đến tính chất nó. Do vậy, nghiên cứu này nhằm mục đích khảo sát cấu cơ tạo ra SLM. thiết bị phương pháp phân tích như hiển quang học, học kỹ thuật số, nhiễu xạ tia X,...
AISI H13 steel samples were additively manufactured using a laser powder bed fusion (LPBF) system. The effect of annealing tem-perature, quenching & tempering, and nitriding determined. microstructure properties the investigated optical microscopy, scanning electron backscattered diffraction, probe micro-analysis, X-ray roughness measurement, hardness tester. results show that as-built sample had on surface pores inside. consisted martensite retained austenite. average was 460 HV,...
Thin films were deposited on SUS440 stainless steel samples by arc plasma evaporation at substrate bias voltages of 10–100 V. X-ray diffraction, optical microscopy, field emission scanning electron energy dispersive spectroscopy, microhardness test, and electrochemical test used to investigate the morphology properties thin films. Particularly, composed chromium nitride (CrN, phases CrN + Cr) 0.76 mm thick. They with microdroplets samples. The surface hardness these reached highest value...
AISI 420 stainless steel is widely used in applications where wear and corrosion resistance are required. However, the heat treatment nitriding process can drastically reduce of this steel. This article focuses on investigating influence substrate gas efficiency at two temperatures 520 oC 550 some properties CrN coating. The experiments were carried out to evaluate surface hardness, microstructure phase composition nitrided layers. coating adhesion load capacity performed according VDI 3198...
Arachnoid cysts (ACs) are congenital abnormalities that can be located anywhere within the subarachnoid space along cerebrospinal axis, although they most often found on left side in temporal fossa and sylvian fissure. ACs comprise approximately 1% of all intracranial space-occupying lesions considered potential risk factors for subdural hematoma (SDH) individuals age groups who have experienced traumatic brain injury. Although it is uncommon an intracystic hemorrhage AC to occur without...