搜索结果: 121-135 共查到“知识库 材料的组织、结构、缺陷与性能”相关记录907条 . 查询时间(1.078 秒)
采用透射电镜、扫描电镜、能谱分析、Tafel曲线、计时-电位法（E-T曲线）和析氢测量等现代分析测试方法研究了不同轧制温度的Al-Mg-Sn-Bi-Ga-In铝合金阳极的显微组织变化及其在80℃，添加Na2SnO3缓蚀剂的5 mol/L NaOH电解液中的电化学性能和耐腐蚀性能。结果表明：当控制道次变形量为40%时，随着轧制温度的升高，铝合金阳极的显微组织经历了从位错胞状组织、亚晶组织到动态再结晶...
Investigation of processing properties of polyamide filled with hard coal
Composites Working properties of materials and products Hard coal
2009/12/14
Purpose: The aim of this article is to present the influence of contents and kind of hard coal used as powder filler on rheological properties (viscosity) of polyamide 6.
Design/methodology/approach:...
Numerical models of polymeric composite to simulate fatigue and ageing processes
Composites Numerical models Non-Destructive testing
2009/12/14
Purpose: of this paper was to prove the possibility of applying numeric model of polymer composite, consisting of finite elements, to simulate dynamic acoustic and thermal processes. Characteristics o...
Influence of the PVD and CVD technologies on the residual macro-stresses and functional properties of the coated tool ceramics
Tool ceramics PVD CVD
2009/12/14
Purpose: The goal of this work is to compare the macro-stresses as well as mechanical and functional properties of the PVD and CVD coatings deposited on oxide and nitride ceramics tool.
Design/method...
Computer modelling system of the chemical composition and treatment parameters influence on mechanical properties of structural steels
Computational material science and mechanics Numerical techniques Artificial intelligence methods
2009/12/14
Purpose: This paper presents Neuro-Lab. It is an authorship programme, which use algorithms of artificial intelligence for structural steels mechanical properties estimation.
Design/methodology/appro...
Effect of heat treatment on mechanical properties of H11 tool steel
Tool steel Heat treatment Hardening
2009/12/14
Purpose: AISI H11 is a special alloy steel, categorized as chromium tool steel. Because of its high toughness and hardness, it is well suited for hot work applications involving very high loads. Typic...
The application of transient thermography for the thermal characterisation of carbon fibre/epoxy composites
Non-destructive testing Transient thermography Thermal diffusivity
2009/12/14
Purpose: Primary purpose of the present experimental study was to evaluate the local fibre content in carbon fibre/epoxy composites using transient thermography.
Design/methodology/approach: The expe...
Influence of LCVD technological parameters on propertiesof polyazomethine thin films
UV-Vis spectroscopy AFM microscopy LCVD
2009/12/14
Purpose: The aim of this paper is to show influence of technological parameters (temperature and gas stream intensity) of low-temperature chemical vapour deposition (LCVD) on optical properties and mo...
Effect of the sintering parameters on structure of the gradient tool materials
Powder metallurgy FGM Tool materials SEM
2009/12/14
Purpose: The purpose of this work was to obtain gradient tool materials, based on the unalloyed steel reinforced with HS6-5-2 high-speed steel, through using the conventional powder metallurgy method ...
银、氟双元素改性TiO2光催化材料的性能
纳米TiO2 光催化材料 银
2009/12/11
以多孔泡沫镍为载体，采用水热合成法制备了Ag修饰和Ag-F共改性多孔TiO2光催化材料，用多种方法对其进行了表征，并评价了其对水中罗丹明B的降解性能. 罗丹明B的光催化降解反应符合零级动力学规律，TiO2中主要成分为锐钛矿型纳米TiO2晶体，经500℃煅烧0.5 h后光催化性能提高. Ag修饰TiO2的光催化性能随Ag修饰量的增加先升高后下降，Ag修饰量大于0.6%时，其光催化性能又提高，最佳Ag...
Influence of copper addition on properties of (Fe36Co36B19Si5Nb4)100-xCux metallic glasses
Amorphous materials Thermal properties Magnetic properties
2009/12/3
Purpose: The main aim of the paper was investigation of influence of copper addition on thermal, magnetic and mechanical (microhardness) properties of (Fe36Co36B19Si5Nb4)100-xCux (x=0 and 0.6) metalli...
Effect of exposure on material response of a swelling elastomer
Engineering polymers EPDM-type water-swelling elastomer Material characterization
2009/12/3
Purpose: This paper reports some results from a comparative study of the behavior of fresh and exposed samples of an EPDM-type water-swelling elastomer.
Design/methodology/approach: Experiments were ...
Mechanical and structural properties of polypropylene composites filled with graphite flakes
Polymer Filler Crystallization
2009/12/3
Purpose: The goal of the work is to study the polymer matrix composite (PMC) with isostactic Polypropylene (iPP) as a matrix material and graphite as a filler.
Design/methodology/approach: Density an...
Mechanical and tribological properties of TiC–based composites for ED machining
Composites Mechanical properties Wear resistance
2009/12/2
Purpose: The goal of this work is comparative study of TiC–(Mo, Ni) composites with different TiC-phase content to obtain material with an optimal mechanical and tribological properties, which can be ...
Comparative analysis of methods of hardness assessment
Quality management Statistical methods Measurement system capability Measurements of hardness
2010/8/16
Quality is a challenge that must be taken up by producers and other organisations. A formal requirement of quality are among others ISO 9000 standards, specific branch requirements e.g. ISO/TS 16949 (...