scholarly journals The Study of Microwave and Electric Hybrid Sintering Process of AZO Target

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Ling-yun Han ◽  
Yong-chun Shu ◽  
Yang Liu ◽  
Lu Gao ◽  
Qing-tong Wang ◽  
...  
Keyword(s):  
Microwave Sintering ◽  
3D Modelling ◽  
Oxide Ceramic ◽  
Sintering Process ◽  
High Quality ◽  
Heating Method ◽  
Large Size ◽  
Doped Zno ◽  
Microwave Assistance ◽  
Ceramic Targets

We simulated the microwave sintering of ZnO by 3D modelling. A large-size Al-doped ZnO (AZO) green ceramic compact was prepared by slurry casting. Through studying the microwave and electric hybrid sintering of the green compact, a relative density of up to 98.1% could be obtained by starting microwave heating at 1200°C and increasing the power 20 min later to 4 kW for an AZO ceramic target measuring 120 × 240 × 12 mm. The resistivity of AZO targets sintered with microwave assistance was investigated. The energy consumption of sintering could be greatly reduced by this heating method. Until now, few studies have been reported on the microwave and electric hybrid sintering of large-size AZO ceramic targets. This research can aid in developing sintering technology for large-size high-quality oxide ceramic targets.

Sintering of High Quality Titanium-Doped Zinc Oxide Ceramic Sputtering Target

2016 ◽  
Vol 697 ◽  
pp. 198-202 ◽  
Author(s):  
Chen Bing Pi ◽  
Xue Xian Cai ◽  
Chao Xiao ◽  
Hai Peng Yang ◽  
Ji Hua Gao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Bending Strength ◽  
Oxide Ceramic ◽  
X Ray Diffraction ◽  
High Quality ◽  
Conductive Films ◽  
Mechanical And Electrical Properties ◽  
Ultrahigh Density ◽  
Ceramic Targets ◽  
Sintering Condition

The ultrahigh density zinc oxide doped with 1wt% TiO2 (ZTO) ceramic targets were prepared by pressureless sintering. Scanning electron microscopy and X-ray diffraction analysis were used to characterize the morphologies and structure of the sintered ZTO targets. The effects of the sintering temperatures on the microstructure, densification behavior, mechanical and electrical properties were discussed and the optimal sintering condition was obtained. The ZTO targets sintered at 1350°C for 3 hours achieved a relative density of 99.7%, a bending strength of 115MPa, a Vickers hardness of 222.16HV and a a electrical resistivity of 1Ω·cm, which was excellent as a high-quality sputtering target to deposit ZnO-based transparent conductive films.

scholarly journals Flux Method Growth of Large Size Group IV–V 2D GeP Single Crystals and Photoresponse Application

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 235
Author(s):  
Shuqi Zhao ◽  
Tongtong Yu ◽  
Ziming Wang ◽  
Shilei Wang ◽  
Limei Wei ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Single Crystals ◽  
High Performance ◽  
Group Iv ◽  
X Ray Diffraction ◽  
High Quality ◽  
Practical Applications ◽  
Large Size ◽  
Growth Method ◽  
Polarized Raman

Two-dimensional (2D) materials driven by their unique electronic and optoelectronic properties have opened up possibilities for their various applications. The large and high-quality single crystals are essential to fabricate high-performance 2D devices for practical applications. Herein, IV-V 2D GeP single crystals with high-quality and large size of 20 × 15 × 5 mm3 were successfully grown by the Bi flux growth method. The crystalline quality of GeP was confirmed by high-resolution X-ray diffraction (HRXRD), Laue diffraction, electron probe microanalysis (EPMA) and Raman spectroscopy. Additionally, intrinsic anisotropic optical properties were investigated by angle-resolved polarized Raman spectroscopy (ARPRS) and transmission spectra in detail. Furthermore, we fabricated high-performance photodetectors based on GeP, presenting a relatively large photocurrent over 3 mA. More generally, our results will significantly contribute the GeP crystal to the wide optoelectronic applications.

scholarly journals Microwave Sintering and Microwave Dielectric Properties of (1–x)Ca0.61La0.26TiO3-xNd(Mg0.5Ti0.5)O3 Ceramics

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 438
Author(s):  
Shuwei Yang ◽  
Bingliang Liang ◽  
Changhong Liu ◽  
Jin Liu ◽  
Caisheng Fang ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Mobile Communications ◽  
Sintering Temperature ◽  
Microwave Sintering ◽  
Microwave Dielectric Properties ◽  
Conventional Heating ◽  
Sintering Process ◽  
Microwave Dielectric ◽  
Sintering Time ◽  
Frequency Temperature

The (1–x)Ca0.61La0.26TiO3-xNd(Mg0.5Ti0.5)O3 [(1–x)CLT-xNMT, x = 0.35~0.60] ceramics were prepared via microwave sintering. The effects of sintering temperature and composition on the phase formation, microstructure, and microwave dielectric properties were investigated. The results show that the microwave sintering process requires a lower sintering temperature and shorter sintering time of (1–x)CLT-xNMT ceramics than conventional heating methods. All of the (1–x)CLT-xNMT ceramics possess a single perovskite structure. With the increase of x, the dielectric constant (ε) shows a downward trend; the quality factor (Qf) drops first and then rises significantly; the resonance frequency temperature coefficient (τf) keeps decreasing. With excellent microwave dielectric properties (ε = 51.3, Qf = 13,852 GHz, τf = −1.9 × 10−6/°C), the 0.65CLT-0.35NMT ceramic can be applied to the field of mobile communications.

scholarly journals The Transformation from (111) to (100): A Routine to Large-Scale Epitaxial Diamond

2020 ◽  
Author(s):  
Yang Wang ◽  
Weihua Wang ◽  
Shilin Yang ◽  
Jiaqi Zhu
Keyword(s):  
Large Scale ◽  
Diamond Films ◽  
Diamond Growth ◽  
Nucleation Density ◽  
Diamond Synthesis ◽  
First Principle ◽  
High Quality ◽  
First Principle Calculations ◽  
Large Size ◽  
Experimental Researches

Diamond is a material with excellent performances which attracts the attention from researchers for decades. Pt (111), owing to its catalytic activity on diamond synthesis, is regarded to be a candidate for diamond hetero-epitaxity, which can enhance nucleation density. Molten surface at diamond growth temperature can also improve mobility and aggregation capability of primitive nuclei. Generally, (100)-oriented is welcomed for the achivement of high quality and large size diamond, since the formation of defects and twins are prevented. First-principle calculations and experimental researches were carried out for the study of transformation of orientation. The transformation from {111} to {100}-oriented diamond has been observed on Pt (111) substrate, which can be promoted by the increase of carbon source concentration and substrate temperature. The process is energetic favorable, which may provides a way towards large-scale (100) diamond films.

scholarly journals The viability of microwave sintering process to produce a ceramic tool insert

2016 ◽  
Vol 13 (2) ◽  
pp. 3462-3475
Author(s):  
S.H. Thauri ◽  
◽  
B.T.H.T Baharudin ◽  
Z. Leman ◽  
S.M Tahir ◽  
...  
Keyword(s):  
Microwave Sintering ◽  
Sintering Process ◽  
Ceramic Tool ◽  
Tool Insert

scholarly journals Improved Reference Genome for Cyclotella Cryptica CCMP332, a Model for Cell Wall Morphogenesis, Salinity Adaptation, and Lipid Production in Diatoms (Bacillariophyta)

2020 ◽  
Author(s):  
Wade R. Roberts ◽  
Kala M. Downey ◽  
Elizabeth C. Ruck ◽  
Jesse C. Traller ◽  
Andrew J. Alverson
Keyword(s):  
Reference Genome ◽  
Lipid Production ◽  
Fold Increase ◽  
High Quality ◽  
Short Read Sequencing ◽  
Large Size ◽  
Reference Genome Assembly ◽  
Cell Wall Morphogenesis ◽  
Cyclotella Cryptica

ABSTRACTThe diatom, Cyclotella cryptica, is a well-established experimental model for physiological studies and, more recently, biotechnology applications of diatoms. To further facilitate its use as a model diatom species, we report an improved reference genome assembly and annotation for C. cryptica strain CCMP332. We used a combination of long- and short-read sequencing to assemble a high-quality and contaminant-free genome. The genome is 171 Mb in size and consists of 662 scaffolds with a scaffold N50 of 494 kb. This represents a 176-fold decrease in scaffold number and 41-fold increase in scaffold N50 compared to the previous assembly. The genome contains 21,250 predicted genes, 75% of which were assigned putative functions. Repetitive DNA comprises 59% of the genome, and an improved classification of repetitive elements indicated that a historically steady accumulation of transposable elements has contributed to the relatively large size of the C. cryptica genome. The high-quality C. cryptica genome will serve as a valuable reference for ecological, genetic, and biotechnology studies of diatoms.Data available fromNCBI BioProjects PRJNA628076 and PRJNA589195

Controllable Synthesis of High Quality Monolayer WS2 with Large Size on Sapphire Substrate by Chemical Vapor Deposition

2016 ◽  
Vol 37 (8) ◽  
pp. 984-989
Author(s):  
巩 哲 GONG Zhe ◽  
何大伟 HE Da-wei ◽  
王永生 WANG Yong-sheng ◽  
许海腾 XU Hai-teng ◽  
董艳芳 DONG Yan-fang
Keyword(s):  
Chemical Vapor Deposition ◽  
Sapphire Substrate ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Controllable Synthesis ◽  
High Quality ◽  
Large Size
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