Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Bian, Xiufang Xuemin, Pan Xubo, Qin Minhua, Jiang |
| Copyright Year | 2002 |
| Abstract | Structures of molten metals Cu and Al, alloys Cu−Al, Al−Ni, Al−Fe and, Al−Si were investigated by using high temperature X-ray diffractometer. It has been found that there are not only shortrange order structures (SRO) but also medium range order structures (MRO) in Cu−Al, Al−Ni, Al−Fe alloy melts. There are only short-range order structures in the pure metals Cu and Al and Al−Si alloy melts at different temperatures. It has also been found that the presence and the disappearance of the MRO structures in molten metals are a function of temperature. Moreover, the pre-peak in the structure factor is an indication of MRO in molten metals. There is a pre-peak in each structure factor S(Q) of Al−Fe alloy melt containing 14 wt% Fe, 16 wt% Fe and 19 wt% Fe at 1550°C, showing that there are the medium range order structures in these alloy melts. For Al-35 wt% Ni alloy, the pre-peak exists in S(Q) when the temperature is lower than 1300°C, and it is weakened drastically when the temperature surpasses 1300°C. The pre-peak occurs at values of scattering vector Q=18.5 nm$^{−1}$ in the structural factor of Cu-12 wt %Al alloy melts at 1250°C. The height of the pre-peak in the melt decreases with increasing temperature. These results show that there exist not only the SRO structure but also MRO structure in the Al-TM melts, and the MRO is correspondent to the tendency of formation of chemical compound. The formation mechanism of the MRO is also studied in this work. Based on the measured results of Cu−Al alloy, a model of the MRO is presented. |
| Starting Page | 113 |
| Ending Page | 119 |
| Page Count | 7 |
| File Format | |
| ISSN | 10069321 |
| Journal | Science in China Series E: Technological Sciences |
| Volume Number | 45 |
| Issue Number | 2 |
| e-ISSN | 1862281X |
| Language | English |
| Publisher | Science in China Press |
| Publisher Date | 2002-01-01 |
| Publisher Place | Beijing |
| Access Restriction | Subscribed |
| Subject Keyword | liquid structure structure factor medium range order Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Engineering Materials Science |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|