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Microwave Plasma-Enhanced CVD for High Rate Coatings of Silicon Oxide 高速率氧化硅涂层的微波等离子体增强CVD
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871184
O. Takai, T. Honjo
{"title":"Microwave Plasma-Enhanced CVD for High Rate Coatings of Silicon Oxide","authors":"O. Takai, T. Honjo","doi":"10.1080/00202967.1998.11871184","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871184","url":null,"abstract":"SummaryMicrowave plasma-enhanced CVD has been studied for the high rate coatings of silicon oxide using methyltrimethoxysilane, an organosilicon compound, and oxygen as gas sources. The transparent hard films could be deposited onto substrates at the high rate of about 1 μm/min. The composition of the films prepared at pressures below 100 Pa was similar to silicon dioxide. Analyses of the films were carried out by using XRD, FT-IR, XPS and AES.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"16-18"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58740316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direct Current Electrodeposition of Tin for the Colouration of Aluminium Oxide Films, in the Presence of Malachite Green 在孔雀石绿存在下，用直流电沉积锡对氧化铝薄膜着色
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871192
S. Theohari, I. Tsangaraki-Kaplanoglou
{"title":"Direct Current Electrodeposition of Tin for the Colouration of Aluminium Oxide Films, in the Presence of Malachite Green","authors":"S. Theohari, I. Tsangaraki-Kaplanoglou","doi":"10.1080/00202967.1998.11871192","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871192","url":null,"abstract":"SummaryThe present study deals with the colouration of porous anodic aluminium oxide films by the dc electrodeposition of tin metal, in the presence of the cationic dye Malachite Green in these films. The adsorption of this dye at the pore base surface is assisted electrochemically during the process of colouring. The adsorbed dye molecules have a positive influence on the changes in the barrier layer characteristics (thickness, number of defects, etc.) and on the intensity of colour, while their influence on the uniformity of colour becomes negative after the second min of treatment at 13 V dc. The intensity of the colour obtained increases rapidly with the increase of colouring voltage until 13 V and 3 min, at a concentration of 1.42 g 1−1 of the dye in the colouring solution (SnSO4+H2SO4) and then tends to become stable. In this case, a deep bronze colouration is achieved, while in the absence of the dye it is light bronze.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"45-50"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871192","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58740977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Corrosion behaviours of the epsilon phase/complex oxide double-layer on mild steel epsilon相/复合氧化物双层在低碳钢上的腐蚀行为
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871202
S. Cheng, Z. Z. Li, J. Q. Zhang, C. Cao
{"title":"Corrosion behaviours of the epsilon phase/complex oxide double-layer on mild steel","authors":"S. Cheng, Z. Z. Li, J. Q. Zhang, C. Cao","doi":"10.1080/00202967.1998.11871202","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871202","url":null,"abstract":"This paper deals with the corrosion characteristics of the double-layer consisting of the epsilon phase and the complex oxide. The tests show that the double-layer protects the steel substrate effectively. The double-layer is superior in corrosion resistance to the single e-phase layer by three to four times, and to the e-phase / magnetite (Fe 3 O 4 ) layer by two times. The corrosion mechanisms have been investigated and discussed by means of metallography.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"94-95"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Corrosion and Wear Resistance of Thick Chromium Deposits from Accelerated Cr(III) Electrolytes 加速Cr(III)电解液中厚铬沉积的耐蚀性和耐磨性
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871216
S. K. Ibrahim, D. Gawne, A. Watson
{"title":"Corrosion and Wear Resistance of Thick Chromium Deposits from Accelerated Cr(III) Electrolytes","authors":"S. K. Ibrahim, D. Gawne, A. Watson","doi":"10.1080/00202967.1998.11871216","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871216","url":null,"abstract":"SummaryA study of a number of chromium(III) electrolytes has indicated that the unacceptably low deposition rate from such electrolytes is due to the formation of μ-hydroxo bridged oligomers, which adsorb and poison the crystal growth sites. Methanol and formic acid have been shown to be particularly effective in delaying oligomer formation. An environmentally acceptable trivalent chromium electrolyte with optimized additions of methanol and formic acid has been developed. The hydroxo-bridged oligomers in the nonmethanolic bath produce a fine dispersion and this together with a high residual stress gives an exceptionally hard, brittle coating with a high wear rate. A minimum in wear rate is obtained at 20% methanol in the bath, at which the wear is slightly less than that of conventional hexavalent chromium plating. Corrosion initiates at cracks in the coating and their high residual stress levels at low methanol concentrations, in the electrolyte, generate wide through-thickness cracks and high corrosion...","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"156-161"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871216","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Electron microscopic investigations on the morphology and crystal growth characteristics of black nickel thin films 黑镍薄膜形貌及晶体生长特性的电镜研究
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871229
M. Ananth
{"title":"Electron microscopic investigations on the morphology and crystal growth characteristics of black nickel thin films","authors":"M. Ananth","doi":"10.1080/00202967.1998.11871229","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871229","url":null,"abstract":"SummaryElectron microscopy studies were made on thin films of black nickel coatings during the initial stages of electrocrystallisation. Ni-Zn-S, Ni-Zn-Fe-S, Ni-Cd-Zn-Fe-S, and Ni-Mo-Fe-Mn were the four different types of black coatings examined. The coatings were electrocrystallised from sulphate baths with ammonium thiocyanate as the blackening agent in most experiments. Interesting morphological and crystal growth patterns were observed for the different types. Introduction of iron significantly alters the crystal growth characteristics. The mechanical and optical absorption properties of these films can be understood from the crystal growth behaviour.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"224-226"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Preparation and Electrical Resistance Characteristics of Electroless Copper-Nickel Alloy Deposits 化学镀铜镍合金镀层的制备及其电阻特性
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871231
H. Nawafune, Takashi Uegaki, S. Mizumoto, M. Ishikawa, Tsuneshi Nakamura
{"title":"Preparation and Electrical Resistance Characteristics of Electroless Copper-Nickel Alloy Deposits","authors":"H. Nawafune, Takashi Uegaki, S. Mizumoto, M. Ishikawa, Tsuneshi Nakamura","doi":"10.1080/00202967.1998.11871231","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871231","url":null,"abstract":"SummaryStudies have been made of an electroless copper-nickel-phosphorus alloy from a citrate complex bath using hypophosphite as reducing agent and electroless copper-nickel binary alloy from a triethanolamine complex bath using formaldehyde as reducing agent. With an increase in copper content of alloy, the specific resistance of deposit decreased. The TCR of copper-nickel-phosphorus alloy increased remarkably because of the crystallization of Ni3P after heat treatment. But the increase in TCR of copper-nickel binary alloy was moderate and not so striking as for the phosphorus containing alloy.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"57 1","pages":"231-234"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871231","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Development of Electrolessly Deposited Nano Fe-P Films 化学沉积纳米Fe-P薄膜的研制
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871234
H. Matsuda, S. Yae, T. Iwagishi, H. Matsuo
{"title":"Development of Electrolessly Deposited Nano Fe-P Films","authors":"H. Matsuda, S. Yae, T. Iwagishi, H. Matsuo","doi":"10.1080/00202967.1998.11871234","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871234","url":null,"abstract":"SUMMARYThis paper describes the development of electrolessly deposited Fe-P films for use in soft magnetic devices. A practical plating solution using hypophosphite as a reducing agent, and three complexing agents, namely sodium tartrate, sodium citrate, and ethylenediaminetetraacetic acid (EDTA) has been developed. The microstructure of deposited films is found to be nano-crystalline.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"13 1","pages":"241-243"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871234","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Anodic behaviour of electrodeposited Zn-Sn alloys 电沉积Zn-Sn合金的阳极行为
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871228
V. Ivanova, G. Raichevski, V. Krastev, S. Vitkova
{"title":"Anodic behaviour of electrodeposited Zn-Sn alloys","authors":"V. Ivanova, G. Raichevski, V. Krastev, S. Vitkova","doi":"10.1080/00202967.1998.11871228","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871228","url":null,"abstract":"SummaryThe paper discusses the anodic behaviour of the electrodeposited alloys Zn-15%Sn in comparison with pure Zn coatings in 0.5M Na2SO4 and 5% NaCI. A passive state in 0.5M Na2SO4 medium was registered for the alloy while in 5% NaCI the typical passive state was not observed. The selective dissolution of Zn-Sn coatings in media of 0.5 M Na2SO4, and 5% NaCI under the effect of anodic polarisation in the active state was investigated. Strong selective dissolution of some of the alloy components was not established.The elemental and chemical compositions of the surface layers formed on ZnSn coatings after anodic treatment in 0.5 M Na2SO4 were studied by X-ray photoelectron spectroscopy (XPS). A gradual tin-enrichment of the surface layer was established.The changes in the structure and morphology of the studied galvanic alloy in 0.5 M Na2SO4 under the influence of different corrosion-electrochemical treatments were investigated.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"29 1","pages":"219-223"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871228","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Effect of superimposed sinusoidal A.C. on the characteristics of electrodeposited Ni, Cu and Cu-Ni alloy composites with α-Al2O3 and TiO2 叠加正弦交流对α-Al2O3和TiO2电沉积Ni、Cu及Cu-Ni合金复合材料性能的影响
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871222
M. Fawzy, M. Ashour, A. El-Halim
{"title":"Effect of superimposed sinusoidal A.C. on the characteristics of electrodeposited Ni, Cu and Cu-Ni alloy composites with α-Al2O3 and TiO2","authors":"M. Fawzy, M. Ashour, A. El-Halim","doi":"10.1080/00202967.1998.11871222","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871222","url":null,"abstract":"Nickel, copper and copper-nickel alloy composites were electrodeposited without and with inclusions of inert α-Al 2 O 3 and TiO 2 particles from closely similar selected baths. It was found that during electrodeposition a superimposed sinusoidal a.c. exerted a decrease in the cathodic polarization for the individual metals and the alloy composites. The higher the superimposed a.c. density and the lower its frequency the greater was the depolarizing effect. The combined effect of superimposed a.c. and inclusion of the inert particles in the bath on the cathodic polarization proved to be additive. Superimposed a.c. induced negligible changes in the cathodic current efficiency of nickel and copper metal composites deposition, whereas it caused a marked decrease (about 20%) in that of the copper-nickel alloy composites. The inert (α-Al 2 O 3 and TiO 2 ) particles content in the individual metal and alloy composites as well as the alloy composition were influenced by the superimposed a.c. and correlated with its depolarizing effect. The above-mentioned changes exerted by superimposed a.c. controlled the growth morphology, as revealed by SEM, and the microhardness of the as-deposited metal and alloy composites. A correlation could be detected between superimposed a.c. and dispersion of α-Al 2 O 3 or TiO 2 particles in an individual metal or alloy matrix, the grain refinement, and an improvement of its microhardness could be detected.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"193-202"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871222","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The Importance of Substrate Surface Condition in Controlling the Porosity of Electroless Nickel Deposits 衬底表面条件对控制化学镀镍层孔隙率的重要性
IF 1.9 4区 材料科学
Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI: 10.1080/00202967.1998.11871215
G. W. Reade, C. Kerr, B. D. Barker, F. Walsh
{"title":"The Importance of Substrate Surface Condition in Controlling the Porosity of Electroless Nickel Deposits","authors":"G. W. Reade, C. Kerr, B. D. Barker, F. Walsh","doi":"10.1080/00202967.1998.11871215","DOIUrl":"https://doi.org/10.1080/00202967.1998.11871215","url":null,"abstract":"SummaryAn overview is presented of factors affecting the porosity of EN deposits and considers three aspects: (a) the type of ferrous material (e.g. ‘Pyrene’ steel panels, machined steel, cast iron), (b) the nature and degree of surface roughness (produced e.g. by abrasive papers, grit blasting or chemical cleaning) and (c) the type of chemical pretreatment applied to the steel. A range of different substrate types (grit blasted, ground, milled and cold rolled) have been electroless nickel plated to three different thicknesses and tested for porosity. The nature of the type of pretreatment and its effect on deposit porosity has also been investigated. Talysurf measurements have shown that the surface morphology does not change significantly with deposit thicknesses up to 24 μm.Data obtained from microscopy, profilometric, electrochemical and corrosion rate measurements are used to illustrate the importance of these factors in controlling the degree of porosity in the EN deposit and the rate of corrosion o...","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"76 1","pages":"149-155"},"PeriodicalIF":1.9,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1998.11871215","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
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