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Haseeb, A.S.M.A.; Arita, Makoto; Hayashi, Yasunori

doi:10.1023/a:1017931106376

Cited by 8 publications

(14 citation statements)

References 4 publications

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“…This decomposition is accompanied by a hardening effect up to 350 • C for deposits with high carbon contents [5]. These findings were confirmed by the work of Haseeb et al [6] who investigated the decomposition upon annealing in more detail [7,8].…”

Section: Introductionsupporting

confidence: 61%

“…Finally, the electrodeposition of ternary alloys including Fe-C has been studied. However, these investigations are restricted to the addition of another element of the iron group (nickel [7] or cobalt [13]) and the elements phosphorous and boron [14,15]. The codeposition of hydrogen is inherent to the electrodeposition of iron and its alloys in general [16], but was shown to be significantly enhanced in the case of Fe-C alloy deposition [17].…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposition of Fe-C Alloys from Citrate Baths: Structure, Mechanical Properties, and Thermal Stability

Müller

Grimwood

Bachmaier

et al. 2018

Metals

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A new citrate-based electrolyte is proposed for the electrodeposition of thick Fe-C films. The structure and properties of the deposits are compared to those from another electrolyte previously reported in the literature. Both consist of a nanocrystalline single-phase structure with a grain size of 20 nm, which results in a hardness of up to 660 HV. Due to its higher growth rate, the new electrolyte is a promising candidate for the deposition of thick films. However, the codeposition of oxygen causes embrittlement, limiting the application of the deposits from both the new and the known electrolyte. On the other hand, the codeposited carbon and oxygen provide considerable thermal stability and even a hardening capacity upon annealing. The results are compared and discussed with respect to the previous investigations of electrodeposited Fe-C alloys.

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Section: Introductionsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Fe-C Alloys from Citrate Baths: Structure, Mechanical Properties, and Thermal Stability

Müller

Grimwood

Bachmaier

et al. 2018

Metals

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“…The associations of LRTI with genital prolapse and less hygiene standards are important although they lacked statistical significance. Bacterial vaginosis was the most prevalent 6 …”

Section: Discussionmentioning

confidence: 99%

Gynecological and Related Morbidities among Ever-Married Omani Women

Riyami¹,

Afifi²,

Fathalla³

2004

African Journal of Reproductive Health

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RÉSUMÉ Les morbidités associées et gynécologiques chez les femmes omanaises jamais mariées.To assess the prevalence and correlates of gynecologic and related morbidity in Omani women, a nationally representative sample of Omani women selected by a multi-stage, stratified probability sampling procedure was selected (total = 364). Questionnaire interview, physical and gynecological examination, and laboratory investigations were used to elicit information. The prevalence of lower reproductive tract infections was 22.4%, upper reproductive tract infections 2.7%, and cervical dysplasia was very rare. Genital prolapse was present in 10%, 11% had a urinary infection, 27% were anaemic, 23% were hypertensive, and 54% were either overweight or obese. The predictors of common morbidities were assessed using regression analysis according to a pre-specified conceptual model. Afin d'évaluer la prévalence et les corrélats de la morbidité associée et gynécologiques chez les femmes omanaises, un échantillon nationalement représentative des femmes omanaises qui été selectionné à travers un processus d'échantillonage de probabilité stratifiée à stades multiples a été selectionné (364 au total). Pour obtenir des renseignements, on s'est servi des interviews à questionnaire, des examens physiques et gynécologiques ainsi que des investigations de laboratoire. La prévalence des infections de la voie de reproduction inférieure était de 24%, des infections de la voie de reproduction supérieure était de 2,7% alors que la dysplasie cervicale était rare. 10% des femmes ont présenté le prolapsus génital, 11% avaient de l'infection urinaire, 27% ont été anémique, 23% ont été hypertendues et 54% avaient une surcharge pondérale ou étaient obèses. Les indices des morbidités ordinaires ont été évalués à l'aide de l'analyse de la regression d'après un modèle conceptuel pré-dénommé.

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“…Mittemeijer and other authors conducted extensive studies on the tempering behavior of carbon and carbonnitrogen martensite, using differential scanning calorimetry DSC, dilatometry, and XRD analysis [20,[26][27][28][29]. The different tempering stages can be clearly separated and identified, particularly using nonisothermal annealing.…”

Section: Introductionmentioning

confidence: 99%

“…The different tempering stages can be clearly separated and identified, particularly using nonisothermal annealing. The proposed transformation mechanism is more complicated in alloyed steels subjected to DCT (tool and high-speed steels are typically subjected to DCT) because Cr, Mo, W, and V complicate the thermal decomposition of martensite and retained austenite during tempering: all transformation stages are shifted to higher temperature, and precipitation of complex alloy carbides is added (superimposed) to those of cementite and iron transition carbides [30,31].…”

Section: Introductionmentioning

confidence: 99%

Influence of deep cryogenic treatment on the thermal decomposition of Fe–C martensite

Calzada

Pellizzari

2014

J Mater Sci

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The beneficial effects of deep cryogenic treatment (DCT) at temperatures close to -180°C on certain mechanical properties of steels are well known, although the metallurgical base mechanism of DCT still needs further clarification. In this study, the thermal decomposition of steel martensite (100Cr6) subjected to low-temperature soaking over different periods (SDCT = 5 min at -180°C, LDCT = 24 h at -180°C) is investigated by means of differential scanning calorimetry and dilatometry. The results were compared with those for the same conventionally quenched and tempered steel. Isochronal annealing experiments at different heating rates were performed, in order to highlight the main tempering stages and to obtain their relevant activation energies. DCT was clearly shown to lower the Ea of the pre-precipitation process more intensely than in the quenched steel. This result may probably be ascribed to an increased dislocation density and to the activation of the carbon segregation process in larger amounts of martensite. The precipitation of transition carbides was also enhanced by the low-temperature conditioning of martensite. As expected, DCT transformed the retained austenite, so that the corresponding peaks almost disappeared from both the dilatometric and the DSC patterns.

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Untitled

Cited by 8 publications

References 4 publications

Electrodeposition of Fe-C Alloys from Citrate Baths: Structure, Mechanical Properties, and Thermal Stability

Electrodeposition of Fe-C Alloys from Citrate Baths: Structure, Mechanical Properties, and Thermal Stability

Gynecological and Related Morbidities among Ever-Married Omani Women

Influence of deep cryogenic treatment on the thermal decomposition of Fe–C martensite

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