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High temperature resistance studies of thin nickel foils exposed to hydrogen and oxygen 暴露于氢和氧的薄镍箔的耐高温性研究
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90071-2
B. Quimby, S. Shatynski
{"title":"High temperature resistance studies of thin nickel foils exposed to hydrogen and oxygen","authors":"B. Quimby, S. Shatynski","doi":"10.1016/0390-6035(82)90071-2","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90071-2","url":null,"abstract":"","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"39 1","pages":"685-697"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77057846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High temperature resistance studies of thin nickel foils exposed to hydrogen and oxygen 暴露于氢气和氧气中的薄镍箔的耐高温性研究
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90071-2
B.A. Quimby , S.R. Shatynski
{"title":"High temperature resistance studies of thin nickel foils exposed to hydrogen and oxygen","authors":"B.A. Quimby ,&nbsp;S.R. Shatynski","doi":"10.1016/0390-6035(82)90071-2","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90071-2","url":null,"abstract":"<div><p>Resistance measurements were performed on thin nickel foils exposed to argon-oxygen gas mixtures at elevated temperatures. The resistance initially increased very rapidly then at oxygen pressures less than 0.08 atm, the resistance change decreased substantially before slowly increasing. At higher oxygen pressures no decrease in the resistance change occurred. These results are interpreted in light of hydrogen-oxygen-nickel interactions which occur as a result of hydrogen dissolution in nickel prior to oxidation The hydrogen originates from long-term hydrogen anneals prior to the oxidation.</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 5","pages":"Pages 685-697"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90071-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72114827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface behaviour of γ-FeOOH: Point of zero charge and specific ionic interactions γ-FeOOH的表面行为：零电荷点和特定离子相互作用
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90067-0
S. Ardizzone, L. Formaro, E. Pizzotti
{"title":"Surface behaviour of γ-FeOOH: Point of zero charge and specific ionic interactions","authors":"S. Ardizzone,&nbsp;L. Formaro,&nbsp;E. Pizzotti","doi":"10.1016/0390-6035(82)90067-0","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90067-0","url":null,"abstract":"<div><p>The acid-base dissociation behaviour of the surface of γ-FeOOH is investigated by potentiometric acid-base titrations of the oxide suspensions in aqueous solutions. The zero point of charge (p.z.c.) of the electrical double layer of the reversible oxide solution interface is determined: in KNO<sub>3</sub> titrations at various ionic strenghts cross over at pH = 7.6; by coincidence with the pH of the isoelectric point, determined by microelectrophoresis, the cross over of titrations in KNO<sub>3</sub> is identified as the point of zero charge of the surface. Specific effects regarding monovalent anions (Cl<sup>−</sup>, ClO<sub>4</sub><sup>−</sup>) are found to be absent, while SO<sub>4</sub><sup>−−</sup> strongly adsorbs on the γ-FeOOH surface, thus modifying the balance of the positive and negative groups on the surface. The sequence of interaction of monovalent cations with the surface is reported: K<sup>+</sup> &lt; Na<sup>+</sup> &lt; Li<sup>+</sup>.</p><p>Surprising and of particular interest are the strong adsorption of Na<sup>+</sup>, which has always been reported to interact only electrostatically with oxide surfaces, and the absence of specific interactions with Cl<sup>−</sup> ions.</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 5","pages":"Pages 639-648"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90067-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72119020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Viscosity of dilute solutions of randomly branched poly (butyleneterephthalate) 无规支化聚对苯二甲酸丁二酯稀溶液的粘度
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90068-2
F. Pilati, A. Munari, P. Manaresi
{"title":"Viscosity of dilute solutions of randomly branched poly (butyleneterephthalate)","authors":"F. Pilati,&nbsp;A. Munari,&nbsp;P. Manaresi","doi":"10.1016/0390-6035(82)90068-2","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90068-2","url":null,"abstract":"<div><p>Experimental intrinsic-viscosity data for randomly branched polydisperse polymer samples of poly(butyleneterephthalate), prepared by polycondensation of dimethylterephthalate (DMT) and 1,4-butanediol with small amounts of 1,3,5-tricarboxymethylbenzene (TMT) (from 0.5 to 1.5 mol% of trifunctional units), were used to test different theoretical treatments for different g-rules.</p><p>It was found that the <span><math><mtext>g</mtext><msup><mi></mi><mn><mtext>3</mtext><mtext>2</mtext></mn></msup></math></span> -rule gave the best fits for the results.</p><p>Correlation of intrinsic viscosity with the weight-average degree of branching, B<sub>w</sub>, was obtained by an empirical equation; intrinsic viscosity was also correlated with melt-flow index.</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 5","pages":"Pages 649-660"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90068-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72090756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Surface behaviour of γ-FeOOH: Point of zero charge and specific ionic interactions γ-FeOOH的表面行为:零电荷点和特定离子相互作用
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90067-0
S. Ardizzone, L. Formaro, E. Pizzotti
{"title":"Surface behaviour of γ-FeOOH: Point of zero charge and specific ionic interactions","authors":"S. Ardizzone, L. Formaro, E. Pizzotti","doi":"10.1016/0390-6035(82)90067-0","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90067-0","url":null,"abstract":"","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"116 1","pages":"639-648"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79288527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Frittage des melanges pulverulents ternaires fer — chrome — manganese. Role exerce par l'atmosphere de traitement 烧结铁-铬-锰三元粉状混合物。通过处理气氛发挥作用
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90065-7
D Georgeault, R Dessieux, G Cizeron
{"title":"Frittage des melanges pulverulents ternaires fer — chrome — manganese. Role exerce par l'atmosphere de traitement","authors":"D Georgeault,&nbsp;R Dessieux,&nbsp;G Cizeron","doi":"10.1016/0390-6035(82)90065-7","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90065-7","url":null,"abstract":"<div><p>The sintering behaviour of powder mixtures Fe20 CrxMn (0 ⩽ x ⩽ 25 w %) was considered. In the case of the basic mixture Fe20 Cr (heated under hydrogen) chromium diffuses partially into α-iron, then mainly into austenite, once the surface oxyde is reduced; on the other hand under argon, chromium diffusion is more limited, and operates only at high temperature into γ-iron. Whatever the treatment atmosphere, an addition of manganese leads to a noticeable diffusion of this element, first into iron (T &lt; 730°C), then into chromium and iron (T &gt; 730°C). Due to the greater mobility of manganese, disturbing KIRKENDALL effects are observed during sintering, especially in the case of the higher manganese contents. However, homogeneous and dense alloys can be obtained by sintering at high temperature; according to the manganese content, the structure consists of a single-phase α when x &lt; 6.5 wt % Mn, or of two or three phases when x &gt; 7 wt % Mn.</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 5","pages":"Pages 605-627"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90065-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72090758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cation distribution and oxygen parameter in CdGa2O4-CoGa2O4 solid solutions CdGa2O4-CoGa2O4固溶体中阳离子分布及氧参数
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90070-0
C. Areán, E. G. Díaz
{"title":"Cation distribution and oxygen parameter in CdGa2O4-CoGa2O4 solid solutions","authors":"C. Areán, E. G. Díaz","doi":"10.1016/0390-6035(82)90070-0","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90070-0","url":null,"abstract":"","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"24 1","pages":"675-683"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76105924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Effet du chrome sur la resistance a la corrosion d'alliages amorphes FeNiBP dans H2SO4 0,1 N 铬对非晶FeNiBP合金在H2SO4 0.1 N下耐腐蚀性能的影响
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90064-5
J. Crousier, Carlo Antonione, Y. Massiani, J. Crousier
{"title":"Effet du chrome sur la resistance a la corrosion d'alliages amorphes FeNiBP dans H2SO4 0,1 N","authors":"J. Crousier, Carlo Antonione, Y. Massiani, J. Crousier","doi":"10.1016/0390-6035(82)90064-5","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90064-5","url":null,"abstract":"","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"45 1","pages":"587-604"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73801025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Zur tribophysikalischen darstellung der magneto-ferroelektrischen emulsion 才能用三角铁模拟表达电磁乳化现象
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90075-X
S. Yamaguchi
{"title":"Zur tribophysikalischen darstellung der magneto-ferroelektrischen emulsion","authors":"S. Yamaguchi","doi":"10.1016/0390-6035(82)90075-X","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90075-X","url":null,"abstract":"","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"180 1","pages":"729-735"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80170921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Randomly branched poly (butyleneterephthalate): Correlation between melt-flow index and branching parameters 随机支化聚对苯二甲酸丁二酯：熔体流动指数与支化参数的相关性
Materials Chemistry Pub Date : 1982-09-01 DOI: 10.1016/0390-6035(82)90069-4
F. Pilati, A. Munari, P. Manaresi
{"title":"Randomly branched poly (butyleneterephthalate): Correlation between melt-flow index and branching parameters","authors":"F. Pilati,&nbsp;A. Munari,&nbsp;P. Manaresi","doi":"10.1016/0390-6035(82)90069-4","DOIUrl":"https://doi.org/10.1016/0390-6035(82)90069-4","url":null,"abstract":"<div><p>Samples of randomly branched poly(butyleneterephthalate) with different degrees of branching were prepared by polycondensation of dimethylterephthalate (DMT), 1,4-butanediol (BD) and small amounts of 1,3,5-trycarboxymethylbenzene (TMT) (from 0.005 to 0.015 (mol TMT)/(mol DMT)).</p><p>The values of <span><math><mtext>M</mtext></math></span><sub>w</sub> were calculated according to Stockmayer from the reaction conversion, p, and correlated with melt-flow index.</p><p>Bate's empirical equation provided a good correlation between the branching parameter, <span><math><mtext>B</mtext></math></span><sub>w</sub>, and the viscosity ratio (&lt;<em>η</em><sub>b</sub>&gt;/&lt;<em>η</em><sub>1</sub>&gt;).</p></div>","PeriodicalId":18221,"journal":{"name":"Materials Chemistry","volume":"7 5","pages":"Pages 661-673"},"PeriodicalIF":0.0,"publicationDate":"1982-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0390-6035(82)90069-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72090757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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