材料期刊网

Plasma Modified Polyaramid Fiber Surface and Fiber/Epoxy Interface

Chunxin ZHANG Shijiu JIN Yunzhao YU Institute of Chemistry , Academia Sinica , Beijing 100080 , China

材料科学技术（英文）

Kevlar-49 fiber was surface-modified through cold air plasma treatment and plasma grafting of acrylic acid (AA).Fiber surface properties were studied with ESCA,while interface properties with a single fiber pull-out (SFPO) test.The stated surface modifications evidently improved the interfacial adhe...

关键词: polyaramld tiber , null , null , null

Metal-Free Heterogeneous Catalysis for Sustainable Chemistry

Chemsuschem

The current established catalytic processes used in chemical industries use metals, in many cases precious metals, or metal oxides as catalysts. These are often energy-consuming and not highly selective, wasting resources and producing greenhouse gases. Metal-free heterogeneous catalysis using carbo...

关键词: carbon;catalyst;heterogeneous catalysis;selectivity;sustainable;chemistry;graphitic carbon nitride;modified activated carbon;nanofiber/graphite-felt composite;ordered mesoporous carbons;oxygen;reduction reaction;nitrogen-doped graphite;fuel cell cathode;onion-like carbon;oxidative dehydrogenation;hydrogen-production

Jian ZHANG/Langhong Lou

材料科学技术（英文）

关键词:

SERS and Quantum Chemistry Studies of Adsorption of Thiourea and Ethylthiourea on Silver Electrode

Acta Physico-Chimica Sinica

Adsorption of thiourea (TU) and ethylthiourea( ETU) on roughened silver electrode was investigated using in situ surf. enhanced Raman spectroscopy(SERS) Using quantum chemistry and HSAB theories, the influences of electrode potential and the different substituent group...

关键词: Surface enhanced Raman spectroscopy;Adsorption;Quantum chemistry;Thiourea;Inhibitor

LOCAL CHEMISTRY AND THE COHESIVE STRENGTH OF GRAIN BOUNDARIES IN Ni_3Al

Shanthi Subramanian , David Muller , John Silcox and Stephen L.Sass (Department of Materials Science and Engineering and Department of Applied and Engineering Physics , Cornell University , Ithaca. NY 14853)

金属学报(英文版)

Local chemistry plays an important role in determining the cohesive strength of grain boundaries in Ni3Al. Doping with B increases the room temperature ductility and changes the fracture mode from intergranular to transgranular, while doping with Zr increases the ducti...

关键词: : grain boundary chemistry , null , null , null

Kunming Institute of Precious Metals

WANG Yonglu NING Yuantao Kunming Institute of Precious Metals , Kunming , China.

材料科学技术（英文）

关键词:

STRUCTURES OF γ Al_2O_3 AND AlON STUDIED BY ~(27)Al NMR AND QUANTUM CHEMISTRY CALCTLATIONS

X.M.Min , Y. Daiand C.W.Nan National Key Laboratory of Advanced Technology for Materials Synthesis and Processing , Wuhan University ofTechnology , Wuhan 430070 , China

金属学报(英文版)

Al NMRand quantum chemistry calculation have been used to study thestructureof γ Al2O3 and AlON. The NMRspectra arecharacterized bythree distinctresonance peaksat114 , 66 and 12 , corresponding to 〔AlN4〕,〔AlO4〕and 〔AlO6〕respectively. The uantum chemistrycalculations...

关键词: Al2 O3 and AlON , null , null , null

Chemistry and Process Optimization of V-Microalloyed N80-Class Seamless Casing Tube

PAN Tao , YANG Cai-fu

钢铁研究学报(英文版)

Chemistry and process optimization of N80 seamless tube was studied by thermo-mechanical simulation tester Gleeble 1500D. Several heats of V-microalloyed steel with different N contents were firstly made at lab in order to simulate N80 seamless tube steel. The results ...

关键词: seamless tube;in-line normalizing;V-N microalloying;reheating;mechanical properties;Gleeble simulation

Surface Chemistry, Dispersion Behavior, and Slip Casting of Ti(3)AlC(2) Suspensions

Journal of the American Ceramic Society

The surface chemistry and dispersion properties of aqueous Ti(3)AlC(2) suspension were studied in terms of hydrolysis, adsorption, electrokinetic, and rheological measurements. The Ti(3)AlC(2) particle had complex surface hydroxyl groups, such as equivalent to Ti-OH,=A...

关键词: liquid reaction synthesis;poly(acrylic acid);nitride;hydrolysis;stability;silica;carbide;powders;ftir

Role of water chemistry and microstructure in stress corrosion cracking in the fusion boundary region of an Alloy 182-A533B low alloy steel dissimilar weld joint in high temperature water

Corrosion Science

Stress corrosion cracking (SCC) in the fusion boundary (FB) region of an Alloy 182-low alloy steel (LAS) dissimilar weld joint in 288 C water was investigated by experiments and finite element simulation. Creviced bent beam and crack growth rate (CGR) experiments showed that, while the FB was a barr...

关键词: Low alloy steel;Alloy;SEM;TEM;Stress corrosion;Welding;environmentally-assisted cracking;nickel-base alloys;stainless-steels;susceptibility;property